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Replacement rubber intake sleeve / connecting hose manufactured to original Porsche specifications. This direct-fit replacement restores airtight sealing between the air flow meter and intake manifold, preventing leaks and ensuring precise fuel metering for smooth, powerful performance.
Fits:
Porsche 964 C2 / C4 1989 - 1994
Porsche 964 Carrera RS
Porsche 993 C2 / C4 1994 - 1995
Porsche 993 Turbo 1994 - 1998
This product supersedes Porsche's old part numbers:
- 96411068601
- 96411068603
Diagram ref no 5.
Material: Heat- and oil-resistant rubber compound
Function: Seals air distributor to intake runners; prevents vacuum leaks
Position: Between intake plenum and cylinder head manifolds
Replacement Interval: During intake removal, rebuild, or when cracks are visible
Benefits: Restores proper airflow, stable idle, and factory performance consistency
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96411068604
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) TURBO 1994-96
Fits:
Porsche 964 C2 / C4 / Turbo 1989-94
Porsche 993 C2 / C4 / C2S / C4S / Turbo 1995-98
Diagram ref no 25
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410605131
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
The Porsche Alternator Belt Pulley Shim is a genuine OEM spacer washer used in the alternator belt pulley assembly. Designed to fine-tune pulley alignment, this 0.5 mm shim ensures the alternator belt runs true, preventing misalignment, premature wear, and belt noise.
Sold Each.
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
What This Product Does:
- The shim adjusts the axial spacing (depth) of the alternator pulley relative to the housing or bearing so that the alternator belt alignment is correct.
- It ensures the pulley is neither too far in nor too far out, thereby avoiding misalignment with the belt path, which could cause wear, noise, or belt slip.
- Proper spacing is critical for belt tension, pulley alignment, and smooth operation of the alternator / drive belt.
- There is belt misalignment — the belt rides off center or rubs on pulley edges or guides.
- Unusual belt noise such as squealing or chirping, especially under load or at startup, which might indicate pulley or belt misalignment.
- Excessive belt or pulley wear — uneven wear on belt ribs or pulley surfaces.
- When installing a replacement alternator / pulley you find the original shim is missing, damaged, or of unknown thickness.
- You notice vibration or play in the alternator pulley assembly, possibly due to improper spacing.
Why Replacement Matters:
- Belt Misalignment – Without correct spacing, the alternator belt may track incorrectly, slip, or ride off the pulley edges.
- Premature Wear – Misaligned belts put stress on both the belt and pulley, causing them to wear out faster.
- Noise and Vibration – A missing or damaged shim often results in squealing, chirping, or vibration under load.
- Charging Issues – A poorly aligned belt can slip, reducing alternator efficiency and risking undercharging of the battery.
- Avoidable Damage – Replacing a small shim prevents more expensive damage to the alternator, pulleys, and belt system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410626800
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
The alternator fan / impeller housing strap secures the cooling fan assembly to the engine structure, keeping it correctly positioned and stable during engine run-up, vibration, and thermal cycling.
Fits:
Porsche 911 1965 - 1989
Porsche 911 (930) Turbo 1975 - 1989
Porsche 964 Turbo 3.3L / Turbo 3.6L 1991 - 1994
Porsche 914-6 1970 - 1976
Diagram ref no 2
The fan/impeller housing is a critical component of the air-cooled Porsche engine’s cooling system - ensuring airflow over the heads and cylinders - so a secure mounting strap helps maintain proper belt tension, consistent fan alignment, and dependable cooling performance.
Installed between the fan housing and its anchor point on the engine case or accessories bracket, this strap absorbs and distributes load from the fan’s rotational forces, engine vibration, and belt tension. The use of titanium dramatically improves resistance to fatigue and stress versus stock steel, helping reduce the chance of strap deformation or failure over time while contributing to overall engine compartment weight reduction.
The strap’s titanium alloy also provides higher corrosion resistance - especially beneficial for cars operated in damp or coastal environments where galvanic corrosion can affect standard hardware.
The stock steel fan strap experiences continuous load from belt tension, fan rotation, and thermal expansion. Over time, steel straps can stretch, fatigue, or crack, affecting fan alignment and potentially leading to belt slippage, reduced cooling airflow, or accelerated wear on pulleys. Upgrading to a titanium strap improves structural integrity, reduces recurring maintenance, and enhances the overall robustness of the cooling system - particularly in performance or high-stress driving environments.
When to replace:
• Original strap shows corrosion, cracks, or deformation
• During fan or alternator service
• As part of engine rebuild or restoration project
• Upgrading to performance materials for enhanced durability
• When reducing rotating mass and engine compartment weight
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410625120T
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
Genuine Porsche Original Equipment (OE) alternator fan / impeller housing strap. It is a factory-engineered mounting bracket that secures the alternator cooling fan (or impeller housing) to the engine, ensuring proper alignment, stability, and airflow within the cooling and charging subsystem of classic Porsche air-cooled engines.
Fit:
Porsche 911 1965 - 1989
Porsche 911 (930) Turbo 1975 - 1989
Porsche 964 Turbo 3.3L / Turbo 3.6L 1991 - 1994
Porsche 914-6 1970 - 1976
Diagram ref no 2
The alternator fan / impeller housing strap holds the fan assembly in correct alignment with the engine’s accessory drive system. By securing the fan housing, it ensures proper belt tension, efficient cooling airflow, reliable alternator operation, and accurate interaction with other engine accessories. Its structural role helps minimize vibration, reduces belt misalignment, and contributes to consistent engine cooling performance.
Function:
Installed in the engine bay between the alternator fan housing and a fixed mounting point on the engine block or accessory bracket, this OE strap:
• Provides rigid support for the alternator cooling fan assembly
• Maintains precise belt alignment for the fan pulley and accessory drive
• Helps resist engine vibration and torque loads
• Contributes to efficient engine cooling airflow.
An original fan strap that is bent, corroded, or fatigued can cause belt misalignment, fan wobble, excessive vibration, or premature wear on pulleys and accessories. Because the alternator cooling fan plays a vital role in air-cooled engine temperature control and charging system reliability, a secure and correctly aligned fan assembly is essential. Replacing a damaged or worn strap with a Genuine Porsche OE part ensures factory-correct support, preserves cooling efficiency, and helps prevent secondary failures in belts, bearings, or adjacent components.
When to replace:
• When the original strap is bent, cracked, or corroded
• After alternator or cooling fan service
• If the fan belt shows uneven wear or misalignment
• During engine restoration or reassembly
• If vibration/noise from the cooling fan area indicates movement
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410625120
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
This alternator fan / impeller housing strap is a high-quality replacement component engineered in stainless steel. This strap secures the alternator cooling fan or impeller housing in the engine bay of classic Porsche air-cooled vehicles, providing enhanced corrosion resistance and durability.
Fit:
Porsche 911 1965 - 1989
Porsche 911 (930) Turbo 1975 - 1989
Porsche 964 Turbo 3.3L / Turbo 3.6L 1991 - 1994
Porsche 914-6 1970 - 1976
Diagram ref no 2
This OE Match strap secures the alternator cooling fan or impeller housing to the engine block or accessory mount, maintaining correct belt alignment, reducing vibration, and preserving the designed airflow path for the cooling system. Its robust stainless construction helps ensure that cooling performance and accessory alignment remain stable through many heating/cooling cycles and varying environmental conditions.
Installed between the fan housing and the engine accessory bracket, the stainless steel strap:
• Provides a rigid mounting point for the alternator fan/impeller housing
• Maintains accurate belt and pulley alignment
• Reduces the risk of strap deformation, corrosion, or fatigue
• Helps ensure consistent airflow distribution for engine cooling
The factory strap is steel and, over time, can be prone to corrosion, bending, fatigue, or surface degradation due to heat cycling and environmental exposure. These issues can lead to fan misalignment, belt wear, and reduced cooling performance. Upgrading to an OE Match stainless steel strap enhances reliability, resists corrosion, and improves longevity - ideal for engines used in daily driving, classic car tours, or restoration builds where long-term durability is important.
When to replace:
• Original strap shows corrosion, rust, or fatigue cracks
• Fan housing shows signs of misalignment or vibration
• During alternator, cooling fan, or accessory belt service
• When restoring or rebuilding the engine assembly
• Preventive upgrade to improve reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410625120
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
Fits:
Porsche 964 Turbo 1989-94
Porsche 993 Turbo 1994-98
Old Porsche part number:
- 96410601521
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410601522
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 964 C2 / C4 1989-94
Porsche 993 C2 / C4 / C2S / C4S 1994-98
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Fit:
Porsche 964 Carrera RS 1991-93
Porsche 993 Carrera RS 1995-96
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410601540
The product you are viewing cross references to these numbers
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) RS 1994-97
Fits:
Porsche 964 1989-94
Porsche 993 1994-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 19.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93060304101
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 964 Carrera 2 / 4 - 1989 to 1994
Porsche 964 Carrera RS - 1992
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410601701
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits:
Porsche 964 Carrera 2 / 4 1989-94
Porsche 964 Carrera RS 1992
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410601701
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits:
Porsche 964 Carrera 2 / 4 1989-94
Porsche 964 Carrera RS 1992
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410666703
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits:
Porsche 964 Carrera RS 3.6L 1992
Porsche 993 Carrera RS 1995-96
Click 'zoom in' for large parts diagram.
Diagram ref no 25
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310605180
The product you are viewing cross references to these numbers
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 993 (911) RS 1994-97

Fits:
Porsche 964 C2 / C4 / RS 1989-94
Porsche 993 1994-98
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97

Fits:
Pre-vario ram cars only
Porsche 964 (1989 to 1994)
Porsche 993 Carrera RS Clubsport (1995 to 1996; with engine code M64.20)
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410640302
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) RS 1994-97
Air Cooling Parts – Engine Efficiency and Temperature Control for Porsche Vehicles
Air cooling parts are essential components designed to regulate engine temperature, ensuring your Porsche runs efficiently, safely, and at peak performance. These components manage airflow and heat dissipation within air-cooled engines, preventing overheating and maintaining consistent operating conditions.
At Design911, we offer a wide selection of genuine and high-quality air cooling parts for Porsche models including classic air-cooled 911s, 964, 993, and more. Our range includes fan assemblies, shrouds, ducts, pulleys, housings, and cooling tins, all precision-engineered for exact fitment and reliable thermal management. Every part is built to the same high standards as the original factory components, ensuring lasting performance and authenticity.
What Do Air Cooling Parts Do?
Air cooling components work together to keep the engine’s
operating temperature stable by directing airflow across critical areas. Key
functions include:
- Cooling
the engine cylinders and heads to prevent overheating.
- Regulating
airflow through fans, ducts, and shrouds.
- Maintaining
consistent engine performance under varying load and speed conditions.
- Supporting mechanical efficiency and preventing thermal stress on components.
For Porsche’s legendary air-cooled engines, proper airflow and cooling performance are vital to achieving both longevity and smooth, balanced operation.
Why Do Air Cooling Parts Fail?
Over time, air cooling components can degrade due to
exposure to heat, vibration, and environmental wear. Common failure causes
include:
- Cracked
or warped shrouds and ducts from thermal stress.
- Fan
damage or imbalance caused by corrosion or debris.
- Loose
pulleys or belts reducing airflow efficiency.
- Corroded
or missing fasteners and mounts leading to rattling or misalignment.
- Material fatigue from age or improper maintenance.
Symptoms of failure include higher-than-normal engine temperatures, noise from the cooling fan, or visible cracks and wear on housing parts.
Why Replace Faulty Air Cooling Parts?
A compromised cooling system can lead to overheating, reduced performance, or even engine failure. Replacing worn or damaged components ensures optimal air circulation and temperature regulation, protecting your engine’s reliability and value.
Benefits of replacement include:
- Restored and efficient airflow across engine components.
- Consistent operating temperatures and improved engine longevity.
- Prevention of costly overheating-related damage.
- Factory-spec fitment and manufacturer-quality materials.
All air cooling parts in this range are designed to meet or exceed exacting engineering standards, ensuring durability, precision, and confidence for both restoration projects and regular maintenance.