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Porsche > 911 & 912 (1965-1989) > 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F) > Engine Rebuild Parts >

Rocker Arms & Tappets

Rocker Arms & Tappets

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DISPLAYING 17 to 24 (of 24 products)
1 2
Rocker arm shaft nut. Porsche 911 / 912 / 964 - 90110537603, 90110537602
3
Rocker arm shaft nut. Porsche 911 / 912 / 964
90110537603/1
Product Information
Product Information
Rocker arm shaft nut.

oematch

Fits:
Porsche 911/912 - 1965 to 1989
Porsche 964 - 1989 to 1994

Click 'Zoom in' for large parts diagram.
Diagram ref no 28

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Related, superseded, cross reference or alternative numbers for comparison.

90110537603
90110537603
90110537602

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Rocker Arm Shaft Nut. Porsche 911 / 912 / 964 1965-94 - 90110537603, 90110537602, 90110537601
3
Rocker Arm Shaft Nut. Porsche 911 / 912 / 964 1965-94
Special Order item
90110537603
Product Information
Product Information
Rocker Arm Shaft Nut.

Genuine Porsche Rocker Arm Shaft Nut retains rocker arm shaft securely to the cylinder head for precise valve timing.
Sold Each.
x12 Required.

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1970-1973 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 914 (1970-1976)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93

Diagram Ref No 47

What This Product Does:

The rocker arm shaft is the pivot point upon which the rocker arms rotate, translating camshaft lobes into valve movement. The nut’s job is to clamp that shaft in position so the valvetrain geometry remains correct and the rocker arms maintain alignment under load.

Signs / Symptoms That It Needs Replacement:

  • Excessive valvetrain noise (ticking, knocking) because the rocker shaft is not held firmly
  • Irregular valve motion — valves might not open or close properly
  • Misalignment of rocker arms
  • In severe cases, mechanical damage to the rocker arms, shafts, or even the camshaft or head if components shift under load

Why Replacement Matters:
  • Ensures correct torque and shaft alignment in the rocker arm assembly.
  • Prevents vibration, noise, and wear caused by loose or aged hardware.
  • Critical during rebuilds — reused nuts can lose clamping force or thread accuracy.



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

90110537603
90110537603
90110537602
90110537601

The product you are viewing cross references to these numbers
Rocker arm shaft seal. Porsche 911 / 930 / 964 / 914-6 - 91109910352
2
Rocker arm shaft seal. Porsche 911 / 930 / 964 / 914-6
Special Order item
91109910352
Product Information
Product Information
Rocker arm shaft seal. O-ring designed to stop oil leaks from the rocker shafts.
24 required. Priced each.

Fits:
Porsche 911 1965-89
Porsche 930 Turbo 1974-89
Porsche 914-6 1970-72
Porsche 964 C2 / C4 1989-1994
Porsche 964 Carrera RS 3.6L 1992
Porsche 964 Turbo 3.6L 1993-94

Fits to number 25 on diagram.

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

91109910352
91109910352

The product you are viewing cross references to these numbers
Rocker arm shaft seal. Porsche 911 / 930 / 964 / 914-6 - 91109910352 - 1611550100
2
Rocker arm shaft seal. Porsche 911 / 930 / 964 / 914-6
91109910352/1
Product Information
Product Information
Rocker arm shaft seal. O-ring designed to stop oil leaks from the rocker shafts.
24 required. Priced each.

Fits:
Porsche 911 1965-89
Porsche 930 Turbo 1974-89
Porsche 914-6 1970-72
Porsche 964 C2 / C4 1989-1994
Porsche 964 Carrera RS 3.6L 1992
Porsche 964 Turbo 3.6L 1993-94

Fits to number 25 on diagram.

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91109910352
91109910352

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Rocker arm. Porsche 911 1965-94 - 93010504305, 93010504300, 93010504301, 93010504302, 93010504303, 93010504304, 930105043EX, 93010504306
5
Rocker arm. Porsche 911 1965-94
93010504306/8
Product Information
Product Information

Rocker Arm - Sold Each
Not to be used with Performance Camshafts

The Porsche Rocker Arm is a critical valve train component fitted to numerous Porsche 911 and Porsche 964 models produced between 1965 and 1994. As a key link between the camshaft and the engine valves, the rocker arm converts camshaft movement into precise valve operation, ensuring accurate opening and closing of the intake and exhaust valves throughout the engine's operating range.

Fits:

  • 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) 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

Diagram Ref No 31

Porsche's air-cooled flat-six engines rely on precise valve train geometry to deliver their renowned performance, reliability, and responsiveness. A correctly functioning rocker arm helps maintain valve timing accuracy, efficient combustion, smooth engine operation, and long-term durability.

Whether you are rebuilding a classic Porsche engine, refurbishing cylinder heads, or restoring a high-mileage 911 or 964, replacing worn rocker arms is an important step in maintaining valve train performance and engine reliability.

What Does the Rocker Arm Do?

The rocker arm transfers movement from the camshaft to the engine valves.

Its primary functions include:

  • Opening intake and exhaust valves at the correct time
  • Maintaining accurate valve lift
  • Supporting proper valve timing
  • Transferring camshaft motion efficiently
  • Helping ensure optimal combustion efficiency
  • Maintaining smooth engine performance throughout the rev range

Because the rocker arm operates continuously whenever the engine is running, it is one of the most heavily loaded components within the valve train.

Why Does the Rocker Arm Fail?

Over time, rocker arms are subjected to constant mechanical stress, friction, heat, and vibration. This can lead to wear and deterioration, particularly in higher-mileage engines.

Common causes of rocker arm failure include:

  • Wear on the rocker arm contact surfaces
  • Excessive valve train loads
  • Poor lubrication
  • Contaminated engine oil
  • High engine mileage
  • Incorrect valve adjustments
  • Excessive camshaft wear
  • Metal fatigue from repeated operation

As wear develops, the rocker arm may lose its ability to maintain precise valve control, affecting engine performance and increasing wear on related components.

Common Symptoms of a Worn Rocker Arm

A failing rocker arm can cause:

  • Excessive valve train noise
  • Ticking or tapping sounds from the cylinder heads
  • Reduced engine performance
  • Rough idle Increased valve clearance variation
  • Premature valve train wear
  • Misfires or inconsistent combustion
  • Difficulty maintaining correct valve adjustments

If left unaddressed, worn rocker arms can accelerate wear to camshafts, valves, and adjustment hardware.

When Should You Replace It?

Rocker arms should be carefully inspected whenever cylinder heads or valve train components are serviced.

Replacement is recommended:

  • During complete engine rebuilds
  • During cylinder head refurbishment
  • If excessive wear is found on contact surfaces
  • When valve train noise persists after adjustment
  • If rocker arm bushings show wear
  • During high-mileage restorations
  • When replacing worn camshafts
  • As preventative maintenance during major engine work

Many Porsche engine builders replace worn rocker arms as part of a complete valve train refresh to restore factory performance and reliability.



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

93010504306
93010504305
93010504300
93010504301
93010504302
93010504303
93010504304
930105043EX
93010504306

The product you are viewing cross references to these numbers
Rocker arm. Porsche 911 1965-94 - 93010504302, 93010504305, 93010504300, 930105043EX
2
Rocker arm. Porsche 911 1965-94
Special Order item
930105043EX
Product Information
Product Information

Rocker Arm.

This item is now an Exchange part and no longer available as new from Porsche. Surcharge applies.

Fits:
Porsche 911 1965-89
Porsche 964 1989-94

Worn rocker arms retard cam timing and rob power. these are the latest heavy duty 930 rockers for optimum reliability.

Diagram Ref No 31

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

930105043EX
93010504302
93010504305
93010504300
930105043EX

The product you are viewing cross references to these numbers
Rocker shaft. Porsche 911 1965-89 / 964 / 914 - 90110534204, 90110534205
2
Rocker shaft. Porsche 911 1965-89 / 964 / 914
Special Order item
90110534205
Product Information
Product Information
Rocker shaft. Porsche 911 1965-89 / 964 / 914
Note: Please do not exceed factory torque spec of 18Nm

Fits:
Porsche 911 1965-89
Porsche 930 (911) 1975-89
Porsche 964 1989-94
Porsche 965 (964) Turbo 1989-94
Porsche 914-6 1970-76

Diagram Ref No 27

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

90110534205
90110534204
90110534205

The product you are viewing cross references to these numbers
Rocker shaft. Porsche 911 1965-89 / 964 / 914 - 90110534204, 90110534205 - 06536
2
Rocker shaft. Porsche 911 1965-89 / 964 / 914
90110534205/1
Product Information
Product Information
Rocker shaft. Porsche 911 1965-89 / 964 / 914
Note: Please do not exceed factory torque spec
Porsche 911 1965-89 18Nm
Porsche 914 1970-76 18Nm
Porsche 964 1989-94 20Nm

Fits:
Porsche 911 1965-89
Porsche 930 (911) 1975-89
Porsche 964 1989-94
Porsche 965 (964) Turbo 1989-94
Porsche 914-6 1970-76

Diagram Ref No 27

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

90110534205
90110534204
90110534205

The product you are viewing cross references to these numbers
DISPLAYING 17 to 24 (of 24 products)
1 2
Also found on these pages
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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