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- 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
This rocker arm bush is an replacement bushing that supports the rocker arm/rocker shaft interface in the cylinder head. Manufactured to OE-style dimensions, it restores correct rocker shaft support, helps reduce valvetrain noise, and promotes smooth, consistent valve operation - ideal for top-end servicing or engine rebuilds.
Sold each, 12 required per vehicle.
Fits:
Porsche 911/912 1965 - 1989
Porsche 964 1989 - 1994
Diagram ref no 26
Worn or loose rocker arm bushings allow excessive shaft play, leading to noisy valve trains, inaccurate lift, premature shaft wear, and eventual valve timing issues. Replacing them with OE Match bushings during engine overhaul or top-end servicing restores proper geometry and prolongs the life of the valvetrain.
When to replace:
• Crankshaft or valve train noise
• Excessive lateral shaft movement
• High-mile engine rebuild
• During rocker shaft removal/service
• Preventive maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110534403
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
OE Match hydraulic exhaust valve tappet
Fits:
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
Check fitment for your specific vehicle (model, year, engine) before ordering.
What This Product Does
The tappet transfers motion from the camshaft to the valve mechanism. Its hydraulic operation depends on the engine's lubrication system, making oil condition and the associated contact surfaces relevant when investigating wear or noise.
Functions
- Transfers camshaft movement to the valve mechanism.
- Supports valve opening in the specified engine application.
Symptoms of Fault
- Persistent ticking or tapping from the valve mechanism.
- Valve-mechanism noise becoming more pronounced as engine speed rises.
- Uneven contact wear found during inspection.
- Rough running or misfires where valve movement is affected.
Why Replacement Matters
A worn tappet can affect valve movement and contribute to abnormal contact with neighbouring components. Establish the cause before replacement, checking lubrication and camshaft condition rather than assuming every ticking noise originates from a tappet.
FAQs
Can oil condition affect hydraulic tappets?
Contaminated oil can cause hydraulic elements to stick. Include lubrication checks in the diagnosis.
Should the camshaft also be checked?
Inspect the cam lobes and tappet contact surfaces together, as wear may affect both components.
Support & Advice
The requested source could not be retrieved. Matching search descriptions were found, but they did not establish the linked product's exact brand or version; this copy therefore uses the supplied product information.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610504172
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
Fits:
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2006-08
Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Porsche 997 MKI Carrera 2005-08
Porsche 955 Cayenne S / Turbo 4.5L 2003-06
Click 'Zoom in' for large parts diagram.
Diagram Ref No 5.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610504172
The product you are viewing cross references to these numbers
This kit is comprised of the following items: