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Porsche > 993 (911) (1994-1998) > 993 (911) C4 1994-97 > Engine Rebuild Parts >

Rocker Arms & Tappets

Rocker Arms & Tappets

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DISPLAYING 1 to 11 (of 11 products)
Hydraulic valve tappet kit. Porsche 993 Carrera / 993 Carrera RS - 99310514105 - 21699
3
Hydraulic valve tappet kit. Porsche 993 Carrera / 993 Carrera RS
99310514107/1KIT
Product Information
Product Information
Hydraulic valve tappet kit.
Kit includes 12 x hydraulic tappets

Fits:
Porsche 993 Carrera - 1994 to 1998
Porsche 993 Carrera RS - 1994 to 1998

Diagram Ref No 25

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Related, superseded, cross reference or alternative numbers for comparison.

99310514107
99310514105

The product you are viewing cross references to these numbers
Rocker arm set. Porsche 993 C2 / C4 - 99310508500, 99310508600, 99310534206, 99310514107, 90006734601
3
Rocker arm set. Porsche 993 C2 / C4
ROCKERARMKIT993
Product Information
Product Information
Rocker arm set, contains: 
6 x Rocker arm inlet
6 x Rocker arm outlet
12 x Rocker arm shaft
12 x Hydraulic valve tappet
24 x Socket-head bolt M6x35

Fits:
Porsche 993 C2 
Porsche 993 C4

Diagram ref no. 22 to 27

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Related, superseded, cross reference or alternative numbers for comparison.

ROCKERARMKIT993
99310508500
99310508600
99310534206
99310514107
90006734601

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Billet race camshaft follower kit. Porsche 911 / 964 / 993 - 93010504300, 93010504302, 93010504305, 930105043EX, 90110537002, 90110534204, 99310508500, 93010508600, 99310508201 - 9M93010504300
4
Billet race camshaft follower kit. Porsche 911 / 964 / 993
9M93010504300
Product Information
Product Information

Billet camshaft follower kit.
Complete kit of 12 x rocker arm, 12 x rocket shaft and 12 x adjuster screw

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

9m Racing 911, 964 and 993 camshaft follower kit - the best items you can buy for all high rpm and high lift race, air-cooled engine applications.

The 911 / 964 and 993 rockers are CNC machined from triple melt (high purity) alloy steel, hardened, ground, micro-finished and diamond-like carbon (DLC) coated to reduce friction and wear on the pad. 911/964 rockets from standard are drilled for oil holes, while the 993 have no such holes. Ours, come drilled and fit both applications

Each rocker has detailed CNC machined work to reduce the weight to a minimum which allows for full contact on high lift cam lobes for up to 15mm of valve lift.

The 911 / 964 and 993 mechanical rocker shafts are also DLC coated to run in the steel bore of the rockers with less friction & wear compared to stock bronze bushes.

To complete the installation are the DLC coated "elephants feet" adjusters which significantly lowers the wiping friction between the foot and top of the valve to reduce valve and valve guide wear.

Diagram ref no 27, 31 and 32



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

9M93010504300
93010504300
93010504302
93010504305
930105043EX
90110537002
90110534204
99310508500
93010508600
99310508201

The product you are viewing cross references to these numbers
Hydraulic valve tappet. Porsche 993 Carrera / 993 Carrera RS - 99310514105, 420005210, 18709, 21699, 21701, 99310514107
2
Hydraulic valve tappet. Porsche 993 Carrera / 993 Carrera RS
Special Order item
99310514107
Product Information
Product Information
Hydraulic valve tappet.

Fits:
Porsche 993 Carrera 1994-98
Porsche 993 Carrera RS 1994-98

Diagram Ref No 25

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

99310514107
99310514105
420005210
18709
21699
21701
99310514107

The product you are viewing cross references to these numbers
Hydraulic valve tappet. Porsche 993 Carrera / 993 Carrera RS - 99310514105, 99310514107 - 420005210, 18709, 21701, 21699
2
Hydraulic valve tappet. Porsche 993 Carrera / 993 Carrera RS
99310514107/1
Product Information
Product Information
Hydraulic valve tappet.

Fits:
Porsche 993 Carrera 1994-98
Porsche 993 Carrera RS 1994-98
Engine types M 64.21, M 64.22, M 64.23, M 64.24, M 64.05, M 64.06, M 64.07, M 64.08, M 64.21S

Diagram Ref No 25

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

99310514107
99310514105
99310514107

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Mechanical Rocker Arm Conversion Set with Oil Fed Rocker Shafts. Porsche 993 - 99310514105, 99310508126, 99310508500, 99310508201, 99310508600, 99310534206
6
Mechanical Rocker Arm Conversion Set with Oil Fed Rocker Shafts. Porsche 993
FVD105399
Product Information
Product Information

Mechanical Rocker Arm Conversion Set - High-Performance Valve Train Upgrade

The Mechanical Rocker Arm Conversion Set is a precision-engineered valve train upgrade for Porsche 993, 993 Turbo and GT2 engines. This conversion replaces the original hydraulic lifter system with a mechanical rocker arm setup featuring oil-lubricated rocker shafts, delivering improved valve control, reliability, and performance at high engine speeds.

Fits:

  • 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  

Designed for high-performance road, motorsport, and track-focused engines, this conversion eliminates the limitations associated with hydraulic lifters, particularly under sustained high RPM and extreme thermal loads. By adopting mechanically actuated rocker arms with direct oil lubrication, engine builders gain greater consistency, improved durability, and enhanced camshaft control.

This system is widely used in competition builds, high-output street engines, and applications where precise valve timing and stability are critical.

What Does the Mechanical Rocker Arm Conversion Do?

This conversion fundamentally improves how the valve train operates under load.

Core Functions:

  • Replaces hydraulic lifters with mechanically actuated rocker arms.
  • Provides direct, oil-lubricated rocker shaft operation.
  • Improves valve control and timing accuracy at high RPM.
  • Reduces valve float and lifter pump-up issues.
  • Enhances reliability in high-performance and motorsport applications.

By removing hydraulic compensation, the valve train responds more precisely to camshaft profiles, making this conversion ideal for aggressive cam setups and sustained high-speed operation.

Why Do Hydraulic Valve Train Components Fail?

Hydraulic lifter systems are designed for comfort and noise reduction, but they become a limitation in high-performance environments.

Common Failure or Limitation Causes Include:

  • Lifter pump-up at high RPM, causing valve float.
  • Oil aeration or pressure fluctuations, reducing lifter effectiveness.
  • Thermal breakdown, leading to inconsistent valve timing.
  • Wear or collapse of hydraulic elements over time.
  • Reduced reliability under track or motorsport conditions.

These issues can compromise performance, cause misfires, or lead to accelerated valve train wear.

Why Replace or Upgrade to a Mechanical Rocker Arm System?

Upgrading to a mechanical rocker arm system provides a robust, performance-focused solution for demanding engines.

Key Benefits:

  • Consistent valve operation at high engine speeds.
  • Improved durability compared with hydraulic systems.
  • Oil-lubricated rocker shafts for reduced friction and wear.
  • Ideal for high-lift or motorsport camshaft profiles.
  • Enhanced throttle response and power delivery.
  • Proven solution for track, race, and high-output road engines.

This conversion is a cornerstone upgrade for Porsche 993-based performance engines where reliability and precision are paramount.

Highlights
Mechanical rocker arm conversion for Porsche 993, 993 Turbo & GT2.
Oil-lubricated rocker shafts for superior durability.
Eliminates hydraulic lifter limitations.
Designed for high-RPM and motorsport use.
Improves valve timing accuracy and stability.
Suitable for performance builds, restomods, and race engines.       



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

FVD105399
99310514105
99310508126
99310508500
99310508201
99310508600
99310534206

The product you are viewing cross references to these numbers
Pan-head screw for rocker arm shaft. Porsche 993 - 90006734601
2
Pan-head screw for rocker arm shaft. Porsche 993
Special Order item
90006734601
Product Information
Product Information
Pan-head screw for rocker arm shaft. M 6 X 35.
Sold each, 24 required.

Fits:
Porsche 993 1994-98

Diagram ref no 26

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

90006734601
90006734601

The product you are viewing cross references to these numbers
Rocker arm bush. Porsche 911 / 964 / 993 1965-97 - 9400048, 93010504302, 93010504305, 93010504300, 930105043EX, 99310508500, 99310508600
2
Rocker arm bush. Porsche 911 / 964 / 993 1965-97
90110534101/1
Product Information
Product Information
Rocker arm bush. Semi finished. Requires machining.

Width: 26mm
Shaft dia: 18mm
Housing dia: 20mm
Bronze coated steel back

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-97


Click 'Zoom in' for large parts diagram.
Diagram ref no 31

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

90110534101
9400048
93010504302
93010504305
93010504300
930105043EX
99310508500
99310508600

The product you are viewing cross references to these numbers
Rocker arm inlet. Porsche 993 1994-98 - 313096880322, 313 09 688 03 22, 99310508500, 99310508526
2
Rocker arm inlet. Porsche 993 1994-98
99310508500/1
Product Information
Product Information
Rocker arm INLET.
6 per engine. Sold each.

Fits:
Porsche 993 1994-98

Diagram ref no 22.

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

99310508500
313096880322
313 09 688 03 22
99310508500
99310508526

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Rocker arm outlet. Porsche 993 1994-98 - 313096890322, 313 09 689 03 22, 99310508600, 99310508201
2
Rocker arm outlet. Porsche 993 1994-98
99310508600/1
Product Information
Product Information
Rocker arm OUTLET
6 per engine. Sold each.

Fits:
Porsche 993 1994-98

Diagram ref no 23.

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

99310508600
313096890322
313 09 689 03 22
99310508600
99310508201

The product you are viewing cross references to these numbers
Rocker arm shaft. Porsche 993 - 99310534206
3
Rocker arm shaft. Porsche 993
Special Order item
99310534206
Product Information
Product Information
Rocker arm shaft.

porsche

Fits:
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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

99310534206
99310534206

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DISPLAYING 1 to 11 (of 11 products)
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About Rocker Arms & Tappets

Rocker Arms (Cam Followers) & Tappets – Precision Valve Train Components for Porsche Engines

The rocker arms (also known as cam followers) and tappets are crucial components within your Porsche’s valvetrain system. They convert the rotational movement of the camshaft into the vertical motion that opens and closes the engine’s valves, allowing precise control of air, fuel, and exhaust flow.

At Design911, we offer a complete range of rocker arms and tappets developed for Porsche engines across all generations. Manufactured from high-strength, wear-resistant alloys, these components ensure smooth operation, minimal friction, and long-lasting durability. Whether you’re restoring a classic air-cooled 911 or upgrading a modern GT engine, our quality valvetrain components deliver the accuracy and reliability your Porsche demands.

What Do Rocker Arms & Tappets Do?

Rocker arms and tappets form the mechanical link between the camshaft and the valves — controlling the timing and lift that determine engine breathing efficiency.

Core Functions:

  • Transmit camshaft movement to open and close the intake and exhaust valves.
  • Maintain precise valve timing for efficient combustion.
  • Reduce friction and wear through precise geometry and lubrication.
  • Ensure smooth, quiet operation across the rev range.
  • Support consistent power delivery and optimal performance.

Well-functioning rocker arms and tappets are essential for maintaining engine efficiency, throttle response, and durability.

Why Do Rocker Arms & Tappets Fail?

Continuous exposure to high temperatures, pressure, and friction makes rocker arms and tappets susceptible to wear over time.

Common Causes of Failure Include:

  • Oil starvation due to blocked passages or poor lubrication.
  • Surface wear or pitting from high mileage or contamination.
  • Excessive valve clearance leading to noise and impact damage.
  • Camshaft wear causing uneven contact and mechanical stress.
  • Material fatigue from prolonged high RPM use.

Symptoms of failure include ticking or knocking noises, loss of power, misfires, or excessive valve noise, all indicating the need for inspection and replacement.

Why Replace Valvetrain Components?

Replacing worn rocker arms or tappets restores accurate valve timing, reduces friction, and prevents camshaft or valve damage. Our high-performance, precision-engineered replacements are designed for exact fitment and long-term durability under extreme conditions.

Key Benefits:

  • Restores proper valve timing and smooth operation.
  • Reduces engine noise and friction losses.
  • Prevents premature wear of the camshaft and valves.
  • Manufactured from heat-treated, wear-resistant materials.
  • Direct-fit compatibility for a wide range of Porsche engines.
  • Ideal for rebuilds, restorations, or performance upgrades.

A reliable valvetrain system ensures your Porsche runs smoother, quieter, and more efficiently — preserving both performance and longevity.

Highlights:

  • High-strength rocker arms, cam followers, and tappets for Porsche engines.
  • Precision-machined for durability and accurate valve control.
  • Reduces noise, friction, and wear under extreme conditions.
  • Perfect for rebuilds, tuning, and classic restoration projects.
  • Direct-fit, manufacturer-quality parts for 911, Cayman, Boxster and other models.
  • Essential for smooth, consistent engine performance.

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