OE Match

Supporting suspension top mount, FRONT.
This mount is engineered to the original Porsche specification for the front upper shock/strut mount assembly on the Porsche 911 (993) series (1994-98). It supports the strut assembly while isolating road and suspension vibration from the chassis.
Sold each, 2 required per vehicle.


Porsche 993 1994 - 1998 (not RS)

Diagram ref no 2

• Direct fit replacement, matching OEM dimensions, mounting points, and bearing or mounting hardware.
• Location: Front axle, upper shock/strut assembly mount, fits left or right shock absorbers.
• Designed to maintain proper strut angle, absorb vibration, and ensure geometry and ride comfort.

The front strut mount endures high loads, road vibration and pivoting motion of the suspension. A worn or failed mount can lead to clunking noises, poor alignment, erratic tyre wear or degraded ride comfort.
Replacing with a new replacement unit restores the correct mount geometry, the proper bearing or bushing action, and helps maintain the precise handling and comfort expected from the Porsche 993 platform.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99334301800

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Push Rod Tube, Stainless Steel.
Restore dependable pushrod protection and engine oil containment with this OE Match Stainless Steel Push Rod Tube, reference 021109335C/2. Designed for compatible engine applications, the push rod tube provides a protective passage for the pushrod as it operates between the internal valve-train components, while also helping keep engine oil contained within the engine.

Fits:

• Porsche 914 1.7L, 1.8L & 2.0L 1970-76 & Type 4

Diagram Ref No 4

Push rod tubes are an important feature of pushrod-operated engines. The pushrods move continuously as the engine runs, transferring camshaft and lifter movement to the rocker assemblies that operate the intake and exhaust valves. The tubes surround the pushrods and isolate them from the external environment while allowing lubricating oil from the valve-train area to remain contained and return through the engine as intended.  

What This Product Does:

• Provides a protected passage for the engine pushrod.
• Allows the pushrod to operate freely between the lifter and rocker assembly.
• Helps contain lubricating oil within the engine.
• Supports the return of valve-train oil through the engine.
• Helps protect the pushrod from dirt, moisture, and external contamination.
• Works with the push rod tube seals to prevent oil leakage.
• Features stainless steel construction for improved corrosion resistance.
• Withstands repeated engine heating and cooling cycles.
• Helps keep the exterior of the engine clean and dry.
• Replaces a corroded, damaged, distorted, or leaking push rod tube.
• Provides an OE-style solution for compatible engine repairs and rebuilds.

Symptoms Of Wear Or Failure:

• Engine oil leaking around the push rod tubes.
• Oil collecting underneath the engine.
• Wet or oily areas around the cylinder heads or crankcase.
• Burning-oil smells while driving.
• Smoke caused by leaked oil reaching hot exhaust components.
• Dirt and debris accumulating on oil-covered engine surfaces.
• Visible corrosion or rust on existing push rod tubes.
• Dents, cracks, distortion, or other physical tube damage.
• Persistent oil leakage despite replacement of the push rod tube seals.
• Damaged sealing surfaces at either end of the tube.

Why Replacement Matters:

• Push rod tubes perform an important oil-containment function within the engine. A corroded, cracked, distorted, or damaged tube may allow engine oil to escape, resulting in an increasingly messy and potentially significant oil leak.
• Oil leaking from the push rod tube area can spread across the underside of the engine and surrounding components. If it reaches hot exhaust surfaces, it may produce smoke and a strong burning-oil smell. Continued leakage can also gradually lower the engine oil level, making regular monitoring and topping-up necessary.
• Maintaining the correct oil level is essential for protecting bearings, crankshaft journals, camshaft components, pistons, and the rest of the engine's lubricated internal parts. Allowing an oil leak to continue unchecked can therefore contribute to more serious lubrication problems.
• Corroded or damaged tubes can also prevent new seals from seating correctly. In these situations, replacing only the seals may not permanently cure the leak because the tube's sealing surfaces are no longer suitable.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

021109335C

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Oil Strainer Gasket Set.
Maintain a dependable, leak-free seal around the engine oil strainer with this OE Match Oil Strainer Gasket Set, reference 021198031. Designed for compatible engine applications, this gasket set provides the sealing components required when servicing, removing, or refitting the engine oil strainer assembly.

Fits:
Porsche 914 1970-76

The oil strainer forms part of the engine's lubrication system and helps prevent larger particles and debris from circulating through the engine oil system. During servicing, the strainer is typically removed for inspection and cleaning, which disturbs the sealing surfaces and existing gaskets.  

What This Product Does:

• Seals the engine oil strainer assembly.
• Helps prevent engine oil leaking from the strainer area.
• Supports correct operation of the engine lubrication system.
• Provides replacement sealing components during oil strainer servicing.
• Helps maintain engine oil level by preventing external leakage.
• Allows the oil strainer to be removed, cleaned, inspected, and correctly resealed.
• Replaces old, flattened, hardened, cracked, or damaged gaskets.
• Helps maintain a clean and dry engine exterior.
• Provides an OE-style replacement for compatible engine applications.

Symptoms Of Wear Or Failure:

• Engine oil leaking around the oil strainer cover or mounting area.
• Oil drops or patches underneath the vehicle.
• Wetness or oil staining around the bottom of the engine.
• Gradual reduction in engine oil level.
• Oil residue collecting around the strainer assembly.
• Dirt and road debris sticking to oily areas around the engine.
• Burning-oil smells if leaked oil reaches hot components.
• A flattened, brittle, torn, or damaged gasket during servicing.
• Oil leakage appearing after the strainer has been removed and refitted.

Why Replacement Matters:

• Maintaining the correct engine oil level is essential for lubrication and cooling of internal engine components. A leaking oil strainer gasket may initially appear to be a minor problem, but continued oil loss can gradually reduce the amount of lubricant available to protect the engine.
• Low engine oil levels can contribute to increased friction, elevated operating temperatures, reduced oil pressure, and accelerated wear of bearings, crankshaft journals, camshaft components, pistons, and other internal parts. Severe oil loss can ultimately result in significant engine damage.
• Gaskets also compress during installation and can harden after prolonged exposure to heat and engine oil. Once removed, an old gasket may no longer conform correctly to the sealing surfaces, making reuse more likely to result in leakage.
• Replacing the sealing components with this OE Match Oil Strainer Gasket Set 021198031 whenever the strainer is serviced helps maintain a dependable oil-tight seal, prevents unnecessary lubricant loss, and supports reliable engine lubrication.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

021198031

The product you are viewing cross references to these numbers

Engine Crankcase Breather Gasket.
Maintain an effective seal within the engine's crankcase ventilation system with this OE Match Engine Crankcase Breather Gasket, reference 021115487. Designed for compatible engine applications, this gasket seals the joint between the crankcase breather assembly and its mating engine surface, helping prevent unwanted oil, vapour, and air leakage.

Fits:
Porsche 914 1970-76

The crankcase breather system manages pressure and gases that accumulate inside the crankcase during normal engine operation. A small amount of combustion gas can pass the piston rings and enter the crankcase as blow-by. The breather system allows these gases and pressure to be safely controlled rather than building up inside the engine.  

What This Product Does:

• Seals the crankcase breather assembly against its mating surface.
• Helps prevent engine oil and oil mist from leaking around the breather.
• Helps maintain correct crankcase ventilation.
• Prevents unwanted air leakage through the breather mounting joint.
• Supports effective management of crankcase pressure and blow-by gases.
• Helps keep the exterior of the engine clean and free from oil contamination.
• Provides a fresh seal whenever the breather assembly is removed for servicing.
• Replaces a hardened, cracked, compressed, damaged, or leaking gasket.
• Provides an OE-style replacement for compatible engine applications.

Symptoms Of Wear Or Failure:

• Engine oil leaking around the crankcase breather assembly.
• Oil staining or wetness around the breather mounting surface.
• Oil mist accumulating around the top of the engine.
• Burning-oil smells if leaked oil reaches hot engine components.
• Dirt and debris collecting on oily areas around the breather.
• Evidence of air leakage around the breather housing.
• Increased oil contamination around nearby engine components.
• A brittle, cracked, flattened, or damaged gasket during inspection.
• Leakage appearing after removal and refitting of the breather assembly.

Why Replacement Matters:

• A crankcase breather gasket must maintain an effective seal despite repeated heating and cooling cycles, exposure to engine oil, vibration, and age. Over time, gasket material can harden, shrink, flatten, or crack, reducing its ability to seal correctly.
• Once the gasket begins leaking, engine oil or oil vapour can escape around the breather assembly. Even a relatively minor leak can coat surrounding components with oil, attract dirt, produce unpleasant smells, and make it more difficult to identify other engine leaks.
• A compromised seal may also affect the crankcase ventilation system by allowing uncontrolled air leakage. Maintaining a correctly sealed breather assembly helps ensure that crankcase gases and pressure are managed through the intended ventilation path.
• Replacing the gasket is particularly important whenever the breather assembly has been removed. Reusing an old compressed gasket can result in an unreliable seal and require the component to be dismantled again.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

021115487

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Camshaft (Set of 2).
Restore or upgrade accurate valve-train operation with this OE Match Camshaft Set, reference WC-05-432, supplied as a set of 2 camshafts for compatible engine applications. The camshafts are central components of the valve train, controlling precisely when and how far the intake and exhaust valves open and close throughout each engine cycle.

Fits:
Porsche 911S (74-77) CIS Injection

Size:
#134/149i .465/.450L 304°/284°D

Made of high quality billet blank Web cams have been Race proven for years, and provide reliable HP at all Power ranges.

Special order only

As the camshafts rotate, their carefully profiled lobes act on the corresponding followers, lifters, or other valve-train components. Each cam profile determines important operating characteristics including valve lift, duration, and timing. These characteristics influence how effectively the cylinders fill with the incoming air/fuel charge and how efficiently exhaust gases are expelled.

What This Product Does:

• Includes 2 camshafts for compatible engine applications.
• Controls the opening and closing of the intake and exhaust valves.
• Determines valve timing relative to crankshaft position.
• Controls valve lift through the profile of the camshaft lobes.
• Determines how long the valves remain open through camshaft duration.
• Works with followers or lifters to operate the valve train.
• Helps control efficient cylinder filling.
• Supports effective evacuation of exhaust gases.
• Influences engine torque, power delivery, throttle response, and operating characteristics.
• Helps maintain coordinated valve operation across the engine.
• Replaces worn, damaged, or unsuitable existing camshafts.
• Provides a two-camshaft solution for compatible engine builds.

Symptoms Of Wear Or Failure:

• Ticking, tapping, or abnormal valve-train noises.
• Reduced engine power or acceleration.
• Rough or inconsistent engine operation.
• Misfires or uneven performance between cylinders.
• Reduced valve lift.
• Difficulty maintaining correct valve clearances.
• Repeated changes in valve adjustment.
• Flattened or excessively worn camshaft lobes.
• Pitting, scoring, or other surface damage on the lobes.
• Excessive wear on followers or lifters.
• Metallic particles in the engine oil.
• Abnormal camshaft journal or bearing wear.
• Visible camshaft damage during engine disassembly.

Why Replacement Matters:

• Camshafts directly control valve movement and therefore have a significant influence on engine breathing, combustion, and performance. A worn camshaft lobe may no longer provide the intended valve lift or duration, preventing the corresponding valve from opening correctly.
• Reduced or inconsistent valve movement can restrict airflow into the cylinders or interfere with exhaust gas evacuation. This can contribute to reduced power, poor throttle response, rough running, misfires, and inefficient combustion.
• Camshafts and their followers or lifters also operate as closely matched contact surfaces. A worn or damaged follower can accelerate camshaft lobe wear, while a damaged camshaft can quickly deteriorate the corresponding follower. Metallic particles produced by this wear may circulate through the engine lubrication system and contribute to additional internal damage.
• Because WC-05-432 is supplied as a set of two camshafts, correct installation and synchronisation of both components are essential. Incorrect camshaft timing can significantly affect engine operation and, in applications with limited piston-to-valve clearance, may cause serious internal engine damage.
• Replacing worn or unsuitable components with this OE Match Camshaft Set of 2 – WC-05-432 helps restore accurate valve operation, consistent valve lift and timing, efficient engine breathing, and dependable performance when correctly matched to the intended engine configuration.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

WC-05-432

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Camshaft (Set of 2).
Restore or upgrade accurate valve-train operation with this OE Match Camshaft Set, reference WC-05-062, supplied as a set of 2 camshafts for compatible engine applications. Camshafts are critical valve-train components responsible for controlling precisely when and how far the intake and exhaust valves open and close throughout the engine's operating cycle.

Fits:
Porsche 911S (67-73) Mechanical Injection

Size:
#149i/149e .450/.400L 284°/256°D

Made of high quality billet blank Web cams have been Race proven for years, and provide reliable HP at all Power ranges.

As each camshaft rotates, its precisely machined lobes operate the corresponding followers, lifters, or other valve-train components. The shape of each lobe determines important characteristics including valve lift, duration, and timing, directly influencing cylinder filling, exhaust gas evacuation, combustion efficiency, torque delivery, and engine performance.

What This Product Does:

• Includes 2 camshafts for compatible engine applications.
• Controls the opening and closing of the intake and exhaust valves.
• Determines valve timing relative to crankshaft position.
• Controls valve lift through the shape of the camshaft lobes.
• Determines how long the valves remain open through camshaft duration.
• Works with the followers or lifters to operate the valve train.
• Helps control efficient cylinder filling.
• Supports effective evacuation of exhaust gases.
• Influences torque, power delivery, throttle response, and overall engine characteristics.
• Helps maintain coordinated valve operation across the engine.
• Replaces worn, damaged, or unsuitable existing camshafts.
• Provides a matched set for compatible engine rebuilds and performance applications.

Symptoms Of Wear Or Failure:

• Ticking, tapping, or abnormal valve-train noise.
• Reduced engine power or acceleration.
• Rough or inconsistent engine operation.
• Misfires or uneven cylinder performance.
• Reduced valve lift.
• Difficulty maintaining correct valve clearances.
• Repeated changes in valve adjustment.
• Flattened or excessively worn camshaft lobes.
• Pitting, scoring, or surface damage on the lobes.
• Excessive wear on followers or lifters.
• Metallic particles in the engine oil.
• Abnormal camshaft journal or bearing wear.
• Visible camshaft damage discovered during engine disassembly.

Why Replacement Matters:

• Camshafts directly control the movement of the engine's valves, making their condition fundamental to correct combustion and engine performance. A worn or damaged camshaft lobe can reduce the amount a valve opens or alter its effective opening duration, preventing the engine from breathing as originally intended.
• Reduced or inconsistent valve lift can restrict airflow into the cylinders or interfere with exhaust gas evacuation. This may result in reduced power, rough running, poor throttle response, misfires, or inefficient combustion.
• Camshaft and follower condition are also closely related. A damaged camshaft surface can rapidly wear the corresponding follower, while a damaged or unsuitable follower can accelerate camshaft lobe wear. Metallic debris generated by this wear can circulate through the lubrication system and potentially affect other internal engine components.
• Because WC-05-062 is supplied as a set of two camshafts, replacing the required components together helps provide consistent valve-train operation across the engine. Correct timing and synchronisation of both camshafts are essential during assembly.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

WC-05-062

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Camshaft.
Restore or upgrade valve-train operation with this OE Match Camshaft, available under references WC-05-572, WC-05-112, WC-05-582, WC-05-012, WC-05-022, and WC-05-222. The camshaft is one of the engine's most important valve-train components, controlling when and how far the intake and exhaust valves open during each combustion cycle.

Please Note New cams should be installed using new lifters and proper assembly lube, or Severe damage may occur.

Fits:
Porsche 356 / 912

Sizes:
#1187 .393/.341L x 249/249D W/1.3 Rockers
#86 .423/.358L x 273/273D W/1.3 Rockers
#86-5 .420/.358L x 281/281D W/1.3 Rockers
#622 .435/.368L x 296/296D W/1.3 Rockers
#86a .435/.369L x 290/290D, Solid Lifters, Performance Street Cam
#86b .500/425L x 290/290D W/1.3 Rockers

As the camshaft rotates, its precisely shaped lobes act on the lifters or followers, transferring movement through the valve train to operate the intake and exhaust valves. The profile of each cam lobe determines critical characteristics including valve lift, duration, and timing, which influence cylinder filling, exhaust gas evacuation, engine response, torque delivery, and overall performance.

What This Product Does:

• Controls the opening and closing of the engine's intake and exhaust valves.
• Determines valve timing relative to crankshaft position.
• Controls valve lift through the shape and height of the cam lobes.
• Determines how long the valves remain open through camshaft duration.
• Works with lifters or cam followers to operate the valve train.
• Helps control how efficiently the cylinders fill with the air/fuel mixture.
• Supports efficient evacuation of exhaust gases.
• Influences engine torque, power delivery, throttle response, and operating characteristics.
• Maintains coordinated valve operation throughout the engine cycle.
• Replaces a worn, damaged, or unsuitable existing camshaft.
• Provides options for compatible standard, rebuilt, or performance-oriented engine configurations.

Symptoms Of Wear Or Failure:

• Ticking, tapping, or abnormal valve-train noise.
• Reduced engine power or acceleration.
• Rough or inconsistent engine operation.
• Difficulty maintaining correct valve clearances.
• Repeated changes in valve adjustment.
• Reduced valve lift.
• Uneven engine performance between cylinders.
• Misfires or poor combustion.
• Excessive wear or flattening of individual cam lobes.
• Pitting, scoring, or surface damage on camshaft lobes.
• Abnormal wear on the lifters or cam followers.
• Metallic particles in the engine oil.
• Visible camshaft damage discovered during an engine rebuild.
  
  

Why Replacement Matters:

• The camshaft directly controls the movement of the engine's valves, making its condition fundamental to compression, combustion, and engine performance. If a camshaft lobe becomes worn or flattened, the corresponding valve may no longer open to the intended height or remain open for the correct duration.
• Reduced valve lift can restrict the amount of air and fuel entering the cylinder or prevent exhaust gases from leaving efficiently. This may lead to reduced power, poor throttle response, rough running, and inefficient combustion.
• Camshaft and lifter condition are also closely related. A damaged camshaft lobe can rapidly wear the corresponding lifter, while an unsuitable or damaged lifter can accelerate camshaft wear. Metal produced by this wear can circulate through the engine lubrication system and potentially damage other internal components.
• Correct camshaft selection is particularly important with performance-oriented profiles. Changes in lift, duration, and timing can affect valve-to-piston clearance, valve-spring requirements, rocker geometry, compression characteristics, idle quality, torque delivery, and usable engine-speed range. The complete engine combination must therefore be considered rather than selecting a camshaft solely by reference or appearance.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

WC-05

The product you are viewing cross references to these numbers

Set Of Web Cam Lifters.
Restore dependable valve-train operation and provide the correct working interface for a compatible camshaft with this OE Match Set of Web Cam Lifters, reference WC-NL-174. Designed for use in compatible engine builds, these lifters—also known as cam followers or tappets—transfer the movement of the camshaft through the valve train, allowing the intake and exhaust valves to open and close correctly.

Fits:
Porsche 356 / 912

Lifters operate directly against the camshaft lobes and are subjected to continuous mechanical loading, friction, and high engine temperatures. Their condition and compatibility with the camshaft are therefore critical to valve-train reliability. A correctly matched lifter maintains consistent contact with the cam lobe, helping preserve the intended camshaft profile and accurate valve operation.  

What This Product Does:

• Follows the profile of the rotating camshaft lobes.
• Transfers camshaft movement through the valve train.
• Helps control the opening and closing of the intake and exhaust valves.
• Supports correct valve lift and timing.
• Provides a critical contact surface between the camshaft and valve train.
• Helps maintain consistent valve-train operation.
• Supports smooth and dependable engine performance.
• Replaces worn, pitted, scored, or damaged lifters.
• Provides a suitable solution for compatible engine rebuilds and camshaft installations.

Symptoms Of Wear Or Failure:

• Ticking, tapping, or clicking from the valve train.
• Increasing valve-train noise with engine speed.
• Difficulty maintaining correct valve clearances.
• Repeated changes in valve adjustment.
• Reduced engine power or performance.
• Rough or inconsistent engine operation.
• Reduced valve lift due to component wear.
• Pitting or scoring on the lifter faces.
• Concave or uneven wear on the lifter contact surfaces.
• Visible wear or damage to corresponding camshaft lobes.
• Metallic particles in the engine oil.
• Abnormal lifter wear discovered during engine disassembly.

Why Replacement Matters:

• Lifters are critical to both valve operation and camshaft durability. The camshaft and lifter contact surfaces operate together under substantial mechanical pressure, and excessive wear to either component can alter the intended valve lift and timing.
• A worn, pitted, or incorrectly matched lifter may damage the corresponding camshaft lobe. As the surfaces deteriorate, metal particles can enter the engine oil and circulate through the lubrication system, potentially contributing to further internal engine wear.
• A badly worn lifter or cam lobe can also reduce valve lift, affecting cylinder filling and exhaust gas flow. This may result in reduced performance, rough running, and inefficient combustion.
• Correct installation is particularly important when fitting replacement lifters. The condition of the camshaft must be inspected carefully, and the lifters must be compatible with the specific camshaft being used. Installing new lifters against an unsuitable or severely worn camshaft may result in rapid wear and premature failure.
• Replacing worn or unsuitable components with the correct OE Match Web Cam Lifters WC-NL-174 helps restore consistent valve-train movement, correct camshaft operation, and dependable engine performance when correctly matched and installed.

HP Lifters, Works With All Stock Profile Camshafts (8 pcs).
Restore reliable valve-train operation and consistent camshaft performance with this OE Match HP Lifter Set, reference GDP356/912LIFTER. Supplied as a set of 8 lifters, these components are designed for compatible engine applications and are intended to work with all stock-profile camshafts, making them suitable for standard-specification engine rebuilds, restorations, and maintenance.

Fits:
Porsche 356 / 912

Lifters, also known as cam followers or tappets, form a critical interface between the camshaft and the engine's valve train. As the camshaft rotates, each cam lobe acts on a lifter, transferring movement through the associated valve-train components to open and close the intake and exhaust valves at the correct points in the engine cycle.

What This Product Does:

• Includes 8 lifters for a complete compatible engine application.
• Works with compatible stock-profile camshafts.
• Follows the rotating camshaft lobes.
• Transfers camshaft movement through the valve train.
• Helps control correct intake and exhaust valve operation.
• Supports accurate valve timing and valve lift.
• Provides a consistent contact surface between the camshaft and valve train.
• Helps maintain smooth and dependable engine operation.
• Replaces worn, pitted, scored, or damaged lifters.
• Provides an OE Match solution for compatible engine rebuilds and restorations.

Symptoms Of Wear Or Failure:

• Ticking, tapping, or clicking noises from the valve train.
• Increased mechanical noise as engine speed rises.
• Difficulty maintaining correct valve clearances.
• Reduced engine performance.
• Rough or inconsistent engine operation.
• Reduced valve lift caused by component wear.
• Pitting or scoring on the lifter contact surfaces.
• Concave or unevenly worn lifter faces.
• Visible camshaft lobe wear.
• Metallic particles in the engine oil.
• Abnormal wear discovered during valve-train inspection.
• Damaged or excessively worn lifters found during an engine rebuild.

Why Replacement Matters:

• Lifters operate directly against the camshaft and are critical to correct valve-train operation. A worn lifter surface can prevent the component from following the camshaft profile correctly, potentially affecting valve lift, valve timing, combustion efficiency, and overall engine performance.
• Lifter and camshaft wear are also closely related. A damaged or incorrectly matched lifter can accelerate wear of the corresponding camshaft lobe. Once this wear begins, metallic debris may circulate through the engine oil and contribute to damage elsewhere within the engine.
• Replacing worn lifters is particularly important during an engine rebuild or when installing an appropriate camshaft. Correct compatibility between the camshaft profile and lifters helps establish the correct contact pattern and promotes reliable long-term operation.
• Replacing worn or damaged components with this OE Match HP Lifter Set GDP356/912LIFTER – 8 Pieces helps restore consistent valve-train movement, correct camshaft operation, and dependable engine performance when installed with a compatible stock-profile camshaft.

Intermediate Shaft Gear, That Is +.001 Over.
Restore correct intermediate shaft drive operation and gear engagement during an engine rebuild with this OE Match Intermediate Shaft Gear, +.001 Oversize, reference PCG10510302/1. Designed for compatible Porsche engine applications, this precision replacement gear is intended for situations where a +.001 oversize specification is required to achieve the correct gear fit and operating relationship within the engine.

Fits: Porsche 356C / 912

The intermediate shaft is an important part of the engine's internal drive system. Depending on the engine design, it transfers rotational movement from the crankshaft to associated components and helps maintain correct mechanical timing and drive operation. The intermediate shaft gear must mesh accurately with its mating gear to provide smooth, consistent power transfer without excessive backlash, noise, or mechanical loading.  

What This Product Does:

• Transfers rotational drive through the engine's intermediate shaft system.
• Helps maintain correct operation of associated engine drive components.
• Meshes with its corresponding gear to provide smooth mechanical power transfer.
• Helps maintain the specified gear engagement and backlash.
• Supports accurate and consistent intermediate shaft rotation.
• Features a +.001 oversize specification for applications requiring this particular size.
• Helps reduce excessive gear movement when correctly selected and installed.
• Replaces a worn, damaged, incorrectly sized, or unsuitable intermediate shaft gear.
• Provides an OE Match solution for compatible Porsche engine rebuilds.

Symptoms Of Wear Or Failure:

• Abnormal whining or gear noise from inside the engine.
• Rattling or mechanical noise associated with the intermediate shaft drive.
• Excessive gear backlash discovered during an engine rebuild.
• Visible wear on the gear teeth.
• Chipped, cracked, or damaged gear teeth.
• Pitting or abnormal wear across the gear contact surfaces.
• Uneven gear tooth contact patterns.
• Excessive play within the intermediate shaft drive.
• Metallic particles or gear debris in the engine oil.
• Abnormal wear of the mating gear.
• Incorrect gear clearance identified during engine assembly.
• Existing gear dimensions outside the required specification.

Why Replacement Matters:

• The intermediate shaft gear operates as part of a precision mechanical drive system. Correct tooth engagement and gear clearance are essential for smooth operation, controlled mechanical loads, and long component life.
• A worn or incorrectly sized gear can create excessive backlash, uneven tooth loading, vibration, and abnormal mechanical noise. Continued operation may accelerate wear of both the intermediate shaft gear and its mating component, potentially introducing metallic debris into the engine lubrication system.
• Insufficient clearance can be equally problematic. A gear that is too tight may generate excessive friction and heat, increase loading on the shaft and bearings, and cause accelerated gear wear or mechanical damage. This is why selecting the correct size is particularly important with an oversize component.
• The +.001 specification of this gear should therefore be treated as a precision engine-building dimension. It must be confirmed as correct for the individual engine rather than selected solely because the original gear appears worn.
• Replacing a worn or unsuitable component with the correctly specified OE Match Intermediate Shaft Gear +.001 Oversize PCG10510302/1 helps restore proper gear engagement, controlled backlash, smooth intermediate shaft operation, and dependable engine performance.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PCG10510302

The product you are viewing cross references to these numbers

Set Of Main Bearings For Porsche 356C / 912.
Oversize: 0.50 mm Case
Restore correct crankshaft support, oil clearance, and dependable engine operation with this OE Match Set of Main Bearings for Porsche 356C and Porsche 912, available under references 61610013895A, 61610013895AO1, 616100138100A, and 61610013890A.

Engine: Porsche 356C and 912

Sizes available: in "MM"

0.50mm Case / STD Crank
0.50mm Case / STD Crank / Thrust +1mm
0.50mm Case / 0.25mm Crank
0.50mm Case / 0.25mm Crank / Thrust +1mm
0.50mm Case / 0.50mm Crank

Please Pick size when ordering below:

Main bearings are precision internal engine components located between the crankshaft main journals and the engine crankcase. Their purpose is to support the crankshaft while allowing it to rotate smoothly on a controlled film of pressurised engine oil. Correct bearing clearances are essential for maintaining lubrication, controlling crankshaft movement, reducing friction, and protecting the crankshaft and crankcase from excessive wear.  

What This Product Does:

• Supports the crankshaft within the engine crankcase.
• Provides a precision running surface for the crankshaft main journals.
• Allows the crankshaft to rotate smoothly on a lubricating oil film.
• Helps maintain correct crankshaft alignment.
• Controls radial crankshaft movement.
• Helps control crankshaft end float where applicable.
• Reduces direct metal-to-metal contact and friction.
• Supports correct engine oil clearances and lubrication.
• Protects crankshaft journals against excessive wear.
• Withstands substantial combustion and rotational loads.
• Replaces worn or damaged main bearings during an engine rebuild.
• Is intended for compatible Porsche 356C and Porsche 912 engine applications.

Symptoms Of Wear Or Failure:

• Low engine oil pressure.
• Oil pressure becoming particularly low when the engine is hot.
• Deep knocking or rumbling noises from the lower engine.
• Excessive crankshaft movement or end float.
• Metallic particles or bearing material in the engine oil.
• Metallic debris in the oil filter or strainer.
• Excessive main bearing clearance during engine inspection.
• Scoring or abnormal wear of the crankshaft journals.
• Scratched, pitted, or discoloured bearing surfaces.
• Evidence of bearing overheating or oil starvation.
• Uneven or accelerated crankshaft journal wear.
• Serious internal engine damage in advanced cases.

Why Replacement Matters:

• Main bearings are fundamental to the reliability of the engine because they support and locate the crankshaft every time the engine operates. Combustion forces place considerable loads on the crankshaft, and the bearings must maintain a precise lubricated clearance while allowing smooth rotation.
• As main bearings wear, the clearance between the bearing surface and crankshaft journal can increase. Excessive clearance can reduce oil pressure, increase crankshaft movement, and accelerate wear of both the bearings and crankshaft journals. This can eventually result in knocking, poor lubrication, and deterioration of other internal engine components.
• Severe bearing wear can cause the protective oil film to break down, resulting in direct metal-to-metal contact. This may generate excessive heat, score or damage the crankshaft, contaminate the lubrication system with bearing material, and potentially cause major engine failure.
• Correct bearing sizing is especially important when rebuilding a classic Porsche 356C or Porsche 912 engine. Previous crankshaft grinding or crankcase machining can change the required bearing dimensions, meaning a standard-size bearing set may no longer provide the correct running clearance.
• Replacing worn components with the correctly sized OE Match Main Bearing Set – 61610013895A, 61610013895AO1, 616100138100A, or 61610013890A – for Porsche 356C / 912 helps restore correct crankshaft support, oil clearance, lubrication, and dependable engine performance.

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616100138

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Rod Bearings For 1.7 & 1.8L Type 4 And Porsche 914.
Restore dependable connecting rod and crankshaft operation during an engine rebuild with these OE Match Rod Bearings for 1.7L and 1.8L VW Type 4 and Porsche 914 engines, available under references 021105707, 021105713, and 021105701.

Engine: VW Type 4 / Porsche 914 1.7L and 1.8L

Sizes available:
STD
.25mm / .010"
.50mm / .020"

Please Pick size when ordering below:

Rod bearings, also known as connecting rod bearings or big-end bearings, are precision engine components fitted between the connecting rod big ends and the crankshaft rod journals. They provide a low-friction running surface that allows the connecting rods to move smoothly around the crankshaft while maintaining a controlled film of pressurised engine oil between the bearing and journal.

What This Product Does:

• Fit between the connecting rod big ends and crankshaft journals.
• Support smooth connecting rod movement around the crankshaft.
• Provide a controlled low-friction bearing surface.
• Maintain a protective film of pressurised engine oil.
• Help prevent direct metal-to-metal contact.
• Support correct connecting rod and crankshaft clearances.
• Help maintain dependable engine lubrication and oil pressure.
• Withstand combustion forces and high rotational loads.
• Protect the crankshaft rod journals against excessive wear.
• Replace worn or damaged connecting rod bearings.
• Suit compatible 1.7L and 1.8L VW Type 4 and Porsche 914 engines.

Symptoms Of Wear Or Failure:

• Deep knocking or tapping noises from the engine.
• Knocking that becomes more noticeable with engine speed or load.
• Low engine oil pressure.
• Oil pressure warning when the engine is hot.
• Metallic particles or bearing material in the engine oil.
• Metallic debris found in the oil filter or strainer.
• Excessive connecting rod bearing clearance.
• Scoring or wear on crankshaft rod journals.
• Scratched, pitted, or discoloured bearing surfaces.
• Evidence of bearing overheating or oil starvation.
• Increased engine vibration or rough mechanical operation.
• Severe internal engine damage or seizure in advanced cases.

Why Replacement Matters:

• Connecting rod bearings are among the most heavily loaded components within an engine. Every combustion event places substantial force through the piston and connecting rod onto the crankshaft, with the rod bearing providing the critical lubricated interface between the connecting rod and crankshaft journal.
• As bearings wear, their running clearance can increase. Excessive clearance can reduce oil pressure and allow the connecting rod to move excessively against the crankshaft journal, producing the characteristic knocking associated with worn big-end bearings.
• If bearing wear progresses far enough for the protective oil film to break down, direct metal-to-metal contact can occur. This may rapidly damage the crankshaft journal, overheat or destroy the bearing, contaminate the lubrication system with metallic debris, and potentially cause the bearing to seize or spin within the connecting rod. Severe failure can result in extensive engine damage.
• Correct bearing sizing is especially important during an engine rebuild. If the crankshaft journals have been reground, standard-size bearings may no longer provide the correct oil clearance. The required bearing specification should therefore be selected according to accurate crankshaft journal measurements and the applicable engine specifications.
• Replacing worn components with the correct OE Match Rod Bearings – 021105707, 021105713, or 021105701 – for compatible 1.7L and 1.8L VW Type 4 and Porsche 914 engines helps restore correct connecting rod clearance, crankshaft protection, lubrication, and dependable engine operation.

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0211057

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Steel Backed Main Bearings For VW Type 4 Porsche 914.
Restore dependable crankshaft support and oil-film control during an engine rebuild with these OE Match Steel Backed Main Bearings for VW Type 4 and Porsche 914 engines, available under references 021198493AOST, 021198495AOST, 021198491AOST, 021198483AT, 021198485AT, 021198487AT, and 021198481AT.

Engine: VW Type 4, 411, 412 and Porsche 914

Sizes available:
• STD Case/STD Crank
• STD Case/.010 Crank
• STD Case/.020 Crank
• STD Case/.030 Crank
• .020 Case/ STD Crank/ Thrust+4mm
• .020 Case/ .010 Crank/ Thrust+4mm
• .020 Case/ .020 Crank/ Thrust+4mm

Please Pick size when ordering below

Main bearings are critical internal engine components positioned between the crankshaft main journals and the engine crankcase. They support the crankshaft as it rotates and provide a precisely controlled running surface that allows the crankshaft to operate smoothly on a pressurised film of engine oil. Correct bearing clearances are essential for maintaining oil pressure, reducing friction, controlling crankshaft movement, and protecting both the crankshaft and crankcase.  

What This Product Does:

• Support the crankshaft within the engine crankcase.
• Provide a controlled running surface for the crankshaft main journals.
• Allow the crankshaft to rotate smoothly on a lubricating oil film.
• Help maintain correct crankshaft alignment.
• Help control crankshaft radial movement.
• Support correct crankshaft end float where applicable.
• Reduce direct metal-to-metal contact between the crankshaft and crankcase.
• Help maintain correct engine oil clearances and lubrication.
• Withstand substantial combustion and rotational loads.
• Provide steel-backed construction for strength and dimensional stability.
• Replace worn or unsuitable main bearings during an engine rebuild.
• Suit compatible VW Type 4 and Porsche 914 engine applications.

Symptoms Of Wear Or Failure:

• Low engine oil pressure.
• Oil pressure warning appearing at idle or when the engine is hot.
• Deep knocking or rumbling noises from the lower engine.
• Excessive crankshaft movement or end float.
• Metallic particles or bearing material found in the engine oil.
• Metallic debris discovered in the oil filter or strainer.
• Abnormal crankshaft journal wear.
• Scoring, pitting, or discolouration of existing bearing surfaces.
• Excessive bearing clearance discovered during engine measurement.
• Reduced oil pressure following engine warm-up.
• Evidence of bearing overheating or oil starvation.
• Engine seizure or significant internal damage in severe cases.

Why Replacement Matters:

• Main bearings are fundamental to engine reliability because they support the crankshaft every time the engine operates. The crankshaft is subjected to substantial forces generated by combustion, piston movement, and rotational speed. The bearings must maintain a precise lubricated clearance while supporting these loads.
• As main bearings wear, their running clearance can increase. Excessive clearance may reduce oil pressure and allow increased crankshaft movement, potentially causing knocking, accelerated journal wear, and deterioration of other internal engine components.
• Severely worn or damaged bearings can lose their protective oil film and allow metal-to-metal contact between the bearing and crankshaft journal. This can generate excessive heat, score the crankshaft, damage the crankcase, contaminate the lubrication system with metallic debris, and ultimately result in major engine failure.
• Correct bearing sizing is particularly important when rebuilding a VW Type 4 or Porsche 914 engine. If the crankshaft has been reground or the crankcase has been align-bored, standard-size bearings may no longer provide the required clearances. The correct bearing specification must therefore be selected according to actual crankshaft and crankcase measurements.
• Replacing worn components with the correct OE Match Steel Backed Main Bearings – 021198493AOST, 021198495AOST, 021198491AOST, 021198483AT, 021198485AT, 021198487AT, or 021198481AT helps restore correct crankshaft support, bearing clearance, lubrication, and dependable engine operation when installed as part of a professionally measured and prepared engine rebuild.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

0211984

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Chrome Top Compression Rings.
Restore effective cylinder sealing and dependable compression during an engine rebuild with these OE Match Chrome Top Compression Rings, available under references 00891184ROS and 00891184RLS. Designed for compatible engine applications, these compression rings fit into the piston ring grooves and create a critical seal between the piston and cylinder wall.

Fits: Porsche 911 1969-74 2.2L
Number of CYL's: 6

The top compression ring operates closest to the combustion chamber and is exposed to some of the highest temperatures and pressures within the engine. Its primary role is to contain combustion gases above the piston, helping maintain cylinder pressure and reducing the amount of gas that escapes into the crankcase. The ring also assists with transferring heat from the piston into the cylinder wall.  

What This Product Does:

• Create a combustion seal between the pistons and cylinder walls.
• Help retain combustion pressure within each cylinder.
• Support strong and consistent engine compression.
• Reduce combustion gases escaping into the crankcase.
• Help minimise excessive engine blow-by.
• Assist with transferring heat from the pistons into the cylinder walls.
• Feature a chrome running surface for increased wear resistance.
• Support efficient combustion and dependable engine performance.
• Replace worn, damaged, broken, seized, or sticking compression rings.
• Provide an OE-style replacement for compatible engine rebuilds.

Symptoms Of Wear Or Failure:

• Low or uneven cylinder compression.
• Excessive crankcase pressure or blow-by.
• Reduced engine power or poor acceleration.
• Poor or inconsistent engine performance.
• Increased engine oil consumption.
• Blue or blue-grey smoke from the exhaust.
• Increased exhaust emissions.
• Oil-fouled spark plugs.
• Poor compression or leak-down test results.
• Excessive carbon deposits within the combustion chambers.
• Broken, worn, seized, or damaged compression rings discovered during disassembly.
• Excessive wear of the piston ring grooves or cylinder bores.

Why Replacement Matters:

• Top compression rings are essential for containing the high pressures generated during combustion. When the rings become worn, damaged, stuck, or lose their ability to maintain contact with the cylinder wall, combustion gases can escape past the piston into the crankcase. This can result in reduced compression, loss of engine performance, increased blow-by, and potentially higher oil consumption.
• A broken or severely worn compression ring can also damage the piston ring groove or score the cylinder wall. Continued operation with damaged rings can therefore turn a relatively localised problem into a more extensive engine repair requiring replacement or machining of pistons and cylinders.
• Correct installation is especially important when fitting chrome-faced compression rings. The piston ring grooves, cylinder bore diameter, taper, ovality, and surface finish should be accurately inspected and measured. Ring end gaps and side clearances must be checked against the correct specifications, and the cylinder surface preparation must be suitable for the ring material to promote correct bedding and sealing.
• Replacing worn or damaged components with the correct OE Match Chrome Top Compression Rings – 00891184ROS or 00891184RLS helps restore combustion sealing, cylinder compression, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.

Related reference numbers
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00891184

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Chrome Top Compression Rings.
Restore effective cylinder sealing and dependable compression during an engine rebuild with these OE Match Chrome Top Compression Rings, reference 00891180R. Designed for compatible engine applications, the compression rings fit into the piston ring grooves and form a critical seal between the pistons and cylinder walls.

Fits: Porsche 911 1967-68 2.0L
Ring size: 1.5x1.5x4.0
Number of CYL's: 6

The top compression ring operates closest to the combustion chamber and is exposed to particularly high combustion pressures and temperatures. Its primary purpose is to contain combustion gases above the piston, helping maintain cylinder pressure and preventing excessive gases from escaping into the crankcase. The ring also assists with transferring heat from the piston into the cylinder wall.  

What This Product Does:

• Create a combustion seal between the pistons and cylinder walls.
• Help retain combustion pressure within each cylinder.
• Support strong and consistent engine compression.
• Reduce combustion gases escaping into the crankcase.
• Help minimise excessive engine blow-by.
• Assist with transferring heat from the pistons into the cylinder walls.
• Provide a wear-resistant chrome running surface.
• Support efficient combustion and dependable engine performance.
• Replace worn, damaged, broken, or sticking compression rings.
• Provide an OE-style replacement for compatible engine rebuilds.

Symptoms Of Wear Or Failure:

• Low or uneven cylinder compression.
• Excessive crankcase pressure or blow-by.
• Reduced engine power or acceleration.
• Poor overall engine performance.
• Increased oil consumption.
• Blue or blue-grey exhaust smoke.
• Increased exhaust emissions.
• Oil-fouled spark plugs.
• Poor compression or leak-down test results.
• Excessive carbon deposits in the combustion chambers.
• Broken, worn, seized, or damaged compression rings during disassembly.
• Excessive wear of the piston ring grooves or cylinder bores.

Why Replacement Matters:

• Top compression rings are essential for containing the high pressures generated during combustion. As the rings and their running surfaces wear, the seal between the piston and cylinder wall can deteriorate, allowing combustion gases to pass into the crankcase. This can reduce compression, decrease engine performance, and increase blow-by.
• A damaged or broken compression ring may also score the cylinder wall or damage the piston ring groove. Continued operation can therefore turn a ring-related problem into a more extensive engine repair involving pistons, cylinders, or other internal components.
• Correct installation is particularly important with replacement compression rings. The piston ring grooves, cylinder bore diameter, taper, ovality, and surface finish should be inspected and measured. Ring end gap and side clearance must also be checked against the correct engine specifications. The cylinder preparation required for chrome-faced rings should be appropriate to the ring manufacturer's specifications to promote correct bedding and sealing.
• Replacing worn or damaged components with these OE Match Chrome Top Compression Rings 00891180R helps restore combustion sealing, cylinder compression, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.

Related reference numbers
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00891180R

The product you are viewing cross references to these numbers

Piston Rings Set.
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, available under references 00891184R and 00891186R. Designed for compatible engine applications, these piston rings fit into the machined grooves around each piston and create the critical sealing interface between the piston and cylinder wall.

Fits: Porsche 911 2.2L / 2.4L
Ring Size: 1.5 x 1.5 x 3.0
Number of CYL's: 6

This is the replacement ring set for Retro Performance 84mm (00891184E), (0089184S) (00891184PJE), (00891184EP), (00891184SP), (00891184JEP) and 86mm (00891186S), (00891186EJE), (00891186SJE), (00891186EPJE) and (00891186SPJE) Kits

Piston rings perform several essential functions within an internal combustion engine. The compression rings help contain the pressure generated during combustion, minimising the amount of combustion gas that escapes past the piston into the crankcase. The oil-control rings regulate the lubricating oil film on the cylinder walls, removing excess oil while retaining sufficient lubrication for smooth piston movement. The rings also assist with transferring heat from the pistons into the cylinder walls.  

What This Product Does:

• Creates an effective seal between the pistons and cylinder walls.
• Helps retain combustion pressure within each cylinder.
• Supports strong and consistent engine compression.
• Reduces combustion gas leakage into the crankcase.
• Helps minimise excessive engine blow-by.
• Controls the lubricating oil film on the cylinder walls.
• Helps prevent excessive engine oil from entering the combustion chambers.
• Assists with transferring piston heat into the cylinder walls.
• Supports efficient combustion and dependable engine performance.
• Replaces worn, damaged, broken, seized, or sticking piston rings.
• Provides an OE-style replacement for compatible engine rebuilds.

Symptoms Of Wear Or Failure:

• Low or uneven cylinder compression.
• Excessive engine oil consumption.
• Blue or blue-grey smoke from the exhaust.
• Excessive crankcase pressure or blow-by.
• Reduced engine power or poor acceleration.
• Increased exhaust emissions.
• Oil-fouled spark plugs.
• Carbon deposits within the combustion chambers.
• Poor compression or leak-down test results.
• Excessive oil entering the combustion chambers.
• Broken, worn, seized, or damaged rings discovered during engine disassembly.
• Excessive cylinder bore or piston ring-groove wear.

Why Replacement Matters:

• Piston rings are essential for maintaining the cylinder seal required for efficient compression and combustion. When compression rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This reduces cylinder sealing and may lead to lower compression, reduced engine performance, and excessive crankcase blow-by.
• Worn oil-control rings can allow excessive lubricating oil to enter the combustion chambers. This can result in increased oil consumption, blue exhaust smoke, spark plug fouling, carbon deposits, and increased emissions. Continued operation with poor ring sealing may also accelerate wear of the pistons, cylinder walls, and other internal engine components.
• Correct ring selection and installation are particularly important during an engine rebuild. Incorrect ring dimensions, excessive or insufficient ring end gaps, worn piston grooves, or an unsuitable cylinder surface finish can prevent new rings from bedding and sealing correctly. Insufficient ring end clearance can cause the ends to contact as operating temperatures increase, potentially resulting in broken rings, piston damage, or cylinder scoring.
• Replacing worn or damaged components with the correct OE Match Piston Ring Set – 00891184R or 00891186R helps restore cylinder sealing, compression, oil control, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.

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0089118

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