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- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, available under references 0081182R and 0081183R. Designed for compatible engine applications, these piston rings fit into the machined grooves around each piston and create the essential sealing interface between the piston and cylinder wall.
Fits: Porsche 356
Ring Size: 1.5 x 1.5 x 3.0
Number of CYL's: 4
This is the replacement ring set for Retro Performance 82.5mm (0081182PJE), (0081182JEP) and 83.5mm (0081183PJE), (008 11 83JEP) kits.
Piston rings perform several critical functions within an internal combustion engine. The compression rings help contain combustion pressure above the piston, reducing the amount of combustion gas that escapes into the crankcase. The oil-control rings regulate the lubricating oil film on the cylinder walls, removing excess oil while retaining sufficient lubrication for smooth piston movement. The rings also help transfer heat from the pistons into the cylinder walls.
What This Product Does:
- Creates an effective seal between the pistons and cylinder walls.
- Helps retain combustion pressure within each cylinder.
- Supports strong and consistent engine compression.
- Reduces combustion gas leakage into the crankcase.
- Helps minimise excessive engine blow-by.
- Controls the lubricating oil film on the cylinder walls.
- Helps prevent excessive engine oil from entering the combustion chambers.
- Assists with transferring piston heat into the cylinder walls.
- Supports efficient combustion and dependable engine performance.
- Replaces worn, damaged, broken, or sticking piston rings.
- Provides an OE-style replacement for compatible engine rebuilds.
Symptoms Of Wear Or Failure:
- Low or uneven cylinder compression.
- Excessive engine oil consumption.
- Blue or blue-grey smoke from the exhaust.
- Excessive crankcase pressure or blow-by.
- Reduced engine power or poor acceleration.
- Increased exhaust emissions.
- Oil-fouled spark plugs.
- Carbon deposits within the combustion chambers.
- Poor compression or leak-down test results.
- Excessive oil entering the combustion chambers.
- Broken, worn, seized, or damaged rings discovered during engine disassembly.
- Excessive cylinder bore or piston ring-groove wear.
Why Replacement Matters:
- Piston rings are essential for maintaining the cylinder seal required for efficient compression and combustion. Worn, damaged, or sticking compression rings allow combustion gases to escape past the pistons into the crankcase, potentially causing reduced compression, decreased engine performance, and excessive blow-by.
- Worn oil-control rings can allow excessive lubricating oil into the combustion chambers. This can result in increased oil consumption, blue exhaust smoke, spark plug fouling, carbon deposits, and increased emissions. Continued operation with poor ring sealing can also accelerate wear of the pistons, cylinder walls, and other internal engine components.
- Correct ring selection and installation are particularly important during an engine rebuild. Incorrect ring dimensions, excessive or insufficient ring end gaps, worn piston grooves, or an unsuitable cylinder surface finish can prevent new rings from sealing correctly. Insufficient end clearance may cause the ring ends to contact as operating temperatures increase, potentially resulting in broken rings, piston damage, or cylinder scoring.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
008118
The product you are viewing cross references to these numbers
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
The OE Match Piston Ring Set is a high-quality replacement ring set designed for pistons with a 93mm bore diameter. Featuring ring dimensions of 1.20mm, 1.50mm and 2.00mm, this precision-engineered set is manufactured to OE specifications to ensure proper sealing between the piston and cylinder wall.
x6 Sets Required Per Car.
Fits:
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
Diagram Ref No 2
Piston rings are critical components within the engine, responsible for maintaining compression, controlling oil consumption and transferring heat from the piston to the cylinder wall. This OE Match ring set provides the correct fit, sealing performance and durability required for engine rebuilds, overhauls and performance restoration projects.
What This Product Does:
- Creates a gas-tight seal between the piston and cylinder wall.
- Maintains engine compression for efficient combustion.
- Controls engine oil distribution on cylinder walls.
- Prevents excessive oil from entering the combustion chamber.
- Transfers heat from the piston to the cylinder bore.
- Helps optimise engine performance, efficiency and reliability.
Symptoms Of Wear Or Failure:
- Excessive engine oil consumption.
- Blue smoke from the exhaust system.
- Reduced engine compression.
- Loss of engine power and performance.
- Poor acceleration and throttle response.
- Increased crankcase pressure.
- Excessive engine blow-by.
- Fouled spark plugs caused by oil contamination.
- Difficult starting and reduced fuel efficiency.
Why Replacement Matters:
- Piston rings operate under extreme temperatures, pressures and friction throughout every engine cycle. Over time, normal wear can reduce their ability to seal the combustion chamber and control oil movement effectively. Excessive wear may result in compression loss, increased oil consumption and reduced engine performance.
- If worn piston rings are not replaced, combustion gases can escape past the piston, while engine oil can enter the combustion chamber, leading to increased emissions, carbon build-up and potential engine damage. During engine rebuilds or major repairs, replacing piston rings is essential for restoring proper compression, oil control and overall engine efficiency.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610303351
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
6 sets per engine. Price is for 1 set.
Fits:
Porsche Boxster 3.4L
Porsche Cayman 3.4L
M97.21 & M97.22 Engines
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98710305302
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman S / GTS 3.4L 981 2013-16
6 sets per engine. Price is for 1 set.
Fits:
Porsche 987.2 Boxster S 3.4L MA1.21
Porsche 987C.2 Cayman S 3.4L MA1.21
Porsche 997.2 Carrera 3.6L MA1.02
Porsche 981 Boxster S 3.4L MA1.23
Porsche 981C Cayman S 3.4L MA1.23
Porsche 991 Carrera 3.4L MA1.04
Cylinder Bore: ø97 mm
Component Number:
1. R 1.2 N
2. NM 1.5 P
3. 3S 2.0 N
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110306502
The product you are viewing cross references to these numbers