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Porsche // 944 (1982-1991) // 944 Turbo S 2.5L 8V 1988
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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) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
The rocker arm shaft seal helps prevent engine oil leakage around the rocker arm shaft bore. A good seal supports correct valve train lubrication retention, reduces oil seepage from the camshaft housing area, and helps keep the engine clean and properly sealed.
Sold individually, 24 required per vehicle
Fits:
Porsche 911 1965 - 1989
Porsche 930 Turbo 1974 - 1989
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.
This OE Match rocker arm shaft seal is designed to match the original-style fitment and help seal the rocker arm shaft area within the valve train assembly.
Functions
• Replaces the rocker arm shaft seal
• Helps seal the rocker arm shaft area
• Helps prevent oil leaks from the camshaft housing / rocker area
• Supports correct valve train oil control
• Suitable for rocker arm shaft removal, refitting, or engine resealing
• Replaces hardened, flattened, split, missing, or leaking original seals
• OE Match replacement for classic Porsche engine repair and restoration.
Why Replace This Part?
Rocker arm shaft seals can harden, flatten, crack, split, or lose sealing ability due to heat, oil exposure, age, and repeated engine service. A worn or missing seal can allow oil to seep from the rocker shaft area, causing oil staining, drips, burning oil smells, or contamination around the camshaft housing. Replacing the seal helps restore a clean and reliable engine oil seal.
When to Replace This Part
• Oil leaks are visible around the rocker arm shaft area
• The rocker arm shafts have been removed or adjusted
• Camshaft housing or valve train service is being carried out
• The original seal is hard, split, flattened, or missing
• Engine oil seepage is present after previous repairs
• The engine is being rebuilt, resealed, or restored
• Preventative replacement is being carried out during top-end service.
Where it fits on the car
This seal fits at the rocker arm shaft / camshaft housing area on Porsche 911, 930, 964, and 914-6 engines. It forms part of the upper engine valve train sealing system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91109910352
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Fits:
Porsche 924S 1986-88
Porsche 928 1978-82
Porsche 928S 1980-86
Porsche 944 1982-89
Porsche 944 Turbo 1986-91
Porsche 944 Turbo S 1987-88
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810531108
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Match Hydraulic Lifter / Tappet
Sold each
The OE Match Hydraulic Lifter, also known as a hydraulic
tappet, is a replacement engine valve train component.
Fits:
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Diagram ref no 7
Using engine oil pressure, it automatically compensates for valve clearance, helping maintain smooth, quiet and efficient engine operation without regular manual tappet adjustment.
Confirm compatibility with the engine specification and original part number before ordering.
What Does It Do?
The hydraulic lifter automatically maintains the correct valve clearance using engine oil pressure.
This helps the camshaft operate the valves accurately while reducing mechanical noise and unnecessary valve train wear.
Why Does It Fail?
Common causes include:
- Contaminated or ageing engine oil
- Blocked internal oil passages
- Insufficient oil pressure
- Internal wear or sticking mechanisms
- High mileage and prolonged engine use
When Should It Be Replaced?
Replace if the lifter is worn, seized, damaged or no longer maintains correct valve clearance.
Common symptoms include persistent tappet ticking, excessive valve train noise and uneven engine operation.
Checks & Diagnosis
Check engine oil level, condition and pressure before replacing the lifter.
Inspect the camshaft and associated valve train components for wear. Confirm that the noise originates from a faulty lifter rather than another engine component.
Follow Porsche workshop procedures when installing replacement tappets.
Key Features
- OE Match replacement hydraulic lifter
- Suitable for selected Porsche 924S, 928 and 944 engines
- Automatically compensates for valve clearance
- Helps reduce valve train noise
- Supports accurate valve operation
- Suitable for engine servicing and rebuilding
Porsche 924S / 928 / 944 Hydraulic Lifters & Engine Valve Train Parts
Hydraulic lifters are important components of the Porsche engine valve train, helping maintain correct valve clearance and consistent camshaft operation.
Replacing worn or faulty tappets can help restore quieter engine operation and reduce unnecessary wear to associated components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810531108
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- 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
- 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 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- 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 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 911 (997) GT3 CUP 2010
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
- Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
LIQUI MOLY Hydraulic Lifter Additive – 300ml
LIQUI MOLY Hydraulic Lifter Additive is an engine oil treatment designed to reduce noisy hydraulic tappets and improve the operation of oil-fed valve train components.
Its cleaning formula helps remove deposits from oil passages and valve bores, supporting smoother engine operation and improving the function of oil-pressure-operated timing chain tensioners.
What Does It Do?
The additive cleans oil passages and valve bores, helping hydraulic lifters operate correctly. It may also reduce noise from oil-pressure-operated timing chain tensioners.
Why Do Hydraulic Lifters Become Noisy?
Common causes include:
- Deposits restricting oil passages
- Contaminated or ageing engine oil
- Poor lubrication during cold starts
- Low engine oil pressure
- Internal lifter wear
When Should It Be Used?
Use when hydraulic tappet noise may be caused by deposits or restricted oil flow.
It can be added during routine servicing. Persistent mechanical noise requires diagnosis, as additives cannot repair worn or damaged components.
Application & Dosage
- Add directly to the engine oil.
- One 300ml container treats up to 6 litres of oil.
- Adjust the dosage proportionally for larger oil capacities.
- Can be added at any time.
- Warm the engine after adding.
- LIQUI MOLY recommends use after each oil change for a lasting effect.
Key Features
- Helps reduce hydraulic tappet noise
- Cleans oil passages and valve bores
- Improves engine oil lubrication properties
- Supports oil-pressure-operated timing chain tensioners
- Suitable for compatible petrol and diesel engines
- Tested for turbochargers and catalytic converters
- Suitable for engines with diesel particulate filters
- Compatible with commercially available engine oils
- 300ml container
LIQUI MOLY Hydraulic Lifter Additives for Porsche Engines
Hydraulic lifters rely on clean engine oil and unrestricted oil passages for reliable operation.
LIQUI MOLY Hydraulic Lifter Additive helps remove deposits that can contribute to noisy tappets and restricted lubrication in compatible Porsche petrol and diesel engines.
Design911 supplies LIQUI MOLY engine additives, lubricants, oil filters and Porsche maintenance products.