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- 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 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 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 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
This OE Match oil pressure relief piston is a replacement piston used in the engine crankcase oil pressure relief system. It is designed to match the original Porsche-style fitment and helps regulate oil pressure within the engine lubrication circuit.
Fits:
Porsche 911/930 1974 - 1989
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 997 Turbo / GT2 2005 >>
Porsche 996 GT3 / 997 GT3
Diagram ref no 16
The oil pressure relief piston works with the relief spring and guide components inside the engine block/crankcase. Its job is to help control excess oil pressure by allowing oil to bypass when pressure reaches the required limit, protecting the lubrication system and helping maintain consistent oil flow to critical engine components.
Functions
• Helps regulate engine oil pressure
• Works with the oil pressure relief spring and guide sleeve
• Helps protect the engine from excessive oil pressure
• Supports correct oil flow through the lubrication system
• Helps maintain reliable lubrication of bearings and internal engine parts
• Provides an OE Match replacement for the original relief piston
• Suitable for engine rebuilds, crankcase service, and oil pressure repairs
The oil pressure relief piston is exposed to constant oil flow, heat, pressure, and engine wear particles. Over time, the piston can become scored, worn, sticky, or damaged, which may affect oil pressure regulation. A worn or sticking piston can contribute to low, high, or unstable oil pressure, so replacement is recommended during engine overhaul or when oil pressure control issues are being investigated.
When to replace
• Oil pressure is too high, too low, or unstable
• The original piston is scored, worn, sticking, or damaged
• The engine has suffered internal wear or contamination
• The crankcase oil pressure relief system is being serviced
• The oil pressure relief spring, guide sleeve, or plug is being replaced
• The engine is being rebuilt or overhauled
• There are concerns about correct lubrication system operation
Where it fits on the car
This piston fits inside the engine crankcase/oil pressure relief valve assembly. It sits in the crankcase and is used with the relief spring and guide sleeve to control oil pressure in the engine lubrication system.
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91110751200
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- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
Fits:
Porsche 958 Cayenne 3.0L Diesel 2012-18
Porsche 9YA Cayenne 3.0L / S 2.9L 2018>>
Porsche 9YA Cayenne 4.0 V8 Turbo 2018>>
Porsche 970 Panamera 3.0L Diesel 2012-16
Porsche 971 Panamera 3.0L / S 2.9L 2017>>
Porsche 971 Panamera 4.0L V8 Diesel 2017>>
Porsche 971 Panamera 4.0L V8 Turbo 2017>>
Porsche 95B Macan V6 TDI 3.0L 2014-18
Click 'Zoom in' for large parts diagram.
Diagram ref no 30
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAF911679
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera GTS 4.0L V8 2021-23
- Porsche 971.2 Panamera GTS Sport Turismo 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S E-Hybrid 4.0L V8 2021-23
- Porsche 971.2 Panamera Turbo S E-Hybrid Sport Turismo 4.0L V8 2021-23
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
Fits:
Porsche 958 Cayenne 3.0L Diesel 2012-18
Porsche 9YA Cayenne 3.0L / S 2.9L 2018>>
Porsche 9YA Cayenne 4.0 V8 Turbo 2018>>
Porsche 970 Panamera 3.0L Diesel 2012-16
Porsche 971 Panamera 3.0L / S 2.9L 2017>>
Porsche 971 Panamera 4.0L V8 Diesel 2017>>
Porsche 971 Panamera 4.0L V8 Turbo 2017>>
Porsche 95B Macan V6 TDI 3.0L 2014-18
Click 'Zoom in' for large parts diagram.
Diagram ref no 31
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N0138495
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
- Porsche 95B.3 Macan Petrol 2.0L (265Bhp) 2022>>
- Porsche 95B.3 Macan T Petrol 2.0L (265Bhp) 2022>>
This is a genuine OE crankshaft seal used in modern Porsche engines. It is designed to seal the crankshaft at the rear of the engine block, preventing oil leaks while allowing the crankshaft to rotate freely.
Fits:
Porsche 95B.1 Macan 2.0L 2015 - 2018
Porsche 95B.2 Macan 2.0L 2019 - 2021
Porsche 95B.3 Macan 2.0L 2022>>
* option code: T2G - 4-cylinder SI engine 2.0 l unit 06L.D
Porsche 9YA Cayenne 2.0L 01/2017 - 05/2023
* engine code: DFKA / DFK
Diagram ref no 16
What this product does:
• Provides a tight seal around the crankshaft flange
• Prevents engine oil leaks that could reduce lubrication or cause damage
• Maintains proper oil pressure and long-term engine performance
Location: Rear of the engine, surrounding the crankshaft flange, positioned before the flywheel or flexplate
Over time, crankshaft seals can wear out, harden, or crack due to constant rotation, oil exposure, and engine heat. Failure may result in:
• Oil leaks at the rear of the engine Reduced lubrication and risk of internal engine wear
• Oil contamination of clutch or transmission components
Replacing seal ensures proper sealing, protects against costly oil leaks, and keeps your Porsche engine performing as designed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A7103171
The product you are viewing cross references to these numbers