Rocker shaft. Porsche 911 1965-89 / 964 / 914  ❭  90110534205

Rocker Shaft.

The OE Match Rocker Shaft is a premium-quality replacement valvetrain component designed to provide a precision mounting and pivot point for the engine's rocker arm assembly on compatible Porsche engines. Manufactured to OE specifications for fit, hardness and durability, the rocker shaft ensures smooth rocker arm movement, accurate valve operation and reliable engine performance.

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
• Porsche 914 (1970-1976)  

Diagram Ref No 7

Manufactured from high-strength, precision-machined hardened steel, the rocker shaft is engineered to withstand constant mechanical loading, high engine temperatures and continuous lubrication. Its precision-ground surface minimises friction and wear between the shaft and rocker arm, ensuring accurate valve actuation throughout the engine's operating range. Designed for direct OE-style fitment, it is ideal for engine rebuilds, maintenance or replacing worn original components.  

What This Product Does:

• Provides the pivot point for the rocker arm assembly.
• Supports accurate opening and closing of the engine valves.
• Maintains correct valvetrain geometry.
• Reduces friction between the rocker arm and shaft.
• Ensures smooth and consistent valve operation.
• Helps maintain precise valve timing and engine performance.
• Supports long-term durability of the valvetrain.
• Forms an essential part of the engine's valve train assembly.

Symptoms Of Wear Or Failure:

• Tapping or ticking noises from the cylinder head.
• Excessive rocker arm play.
• Accelerated rocker arm wear.
• Uneven valve operation.
• Reduced engine performance.
• Rough idle.
• Increased valvetrain noise during acceleration.
• Visible scoring or wear on the shaft surface.
• Engine oil leaks around the rocker shaft area where applicable.
• Premature wear of associated valvetrain components.

Why Replacement Matters:

• The rocker shaft is subjected to continuous contact with the rocker arms while operating under high engine loads, elevated temperatures and constant lubrication. Over time, the shaft surface can wear, become scored or develop excessive clearance, affecting the accuracy of valve movement and increasing valvetrain noise.
• A worn rocker shaft can accelerate wear of the rocker arms and valve train components, resulting in reduced engine efficiency, increased mechanical noise and compromised valve timing. If left unattended, excessive wear may lead to more extensive engine repairs during future maintenance or rebuilds.
• Replacing a worn rocker shaft restores precise rocker arm operation, correct valve geometry and smooth engine performance. The OE Match replacement provides factory-style fitment, precision-machined hardened steel construction and exceptional durability, helping maintain reliable valve operation, engine efficiency and the long-term performance expected from your Porsche.

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

90110534205

The product you are viewing cross references to these numbers