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Piston Rings
- Porsche 914 (1970-1976)
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, reference VW9600T4S71R. Designed for compatible VW engine applications, the piston rings fit into the machined grooves around each piston and form the critical sealing interface between the piston and cylinder wall.
Fits: Porsche 914 1.7 / 1.8L Big Bore
Ring size: 1/16 x 1/16 x 3/16
Number of CYL's: 4
This is a replacement ring Set for Retro Performance (VW9600T4S71) and (VW9600T4S71P) Kits.
Piston rings perform several essential functions within the 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 assist with transferring 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.
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 found 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. When the rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This can reduce cylinder compression, decrease engine performance, and increase crankcase blow-by.
- Worn oil-control rings can also allow excessive lubricating oil to enter the combustion chambers. This may result in increased oil consumption, blue exhaust smoke, spark plug fouling, carbon deposits, and increased emissions. Continued operation with poor ring sealing can contribute to accelerated wear of the pistons, cylinders, 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 the rings from sealing correctly. Insufficient clearances may also cause the ring ends to contact as the engine reaches operating temperature, potentially resulting in broken rings, piston damage, or cylinder scoring.
- Replacing worn or damaged components with this OE Match Piston Ring Set VW9600T4S71R helps restore cylinder sealing, compression, oil control, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.
- Porsche 914 (1970-1976)
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, available under references VW103T4R and VW104T4R. Designed for compatible VW engine applications, these piston rings fit into the machined grooves around each piston and form the critical sealing interface between the piston and cylinder wall.
Fits: Porsche 914 2.0L
Ring size: 1/16 x 1/16 x 3/16
Number of CYL's: 4
This is a replacement ring Set for the 103x71mm Retro Performance pistons.
Piston rings perform several essential functions inside the engine. The compression rings help contain combustion pressure above the piston, minimising 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.
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 found 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. When the rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This reduces cylinder sealing and can lead to lower compression, reduced engine performance, and excessive blow-by.
- Worn oil-control rings can allow excessive lubricating oil to enter the combustion chambers. This may 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, cylinders, and other internal engine components.
- Correct ring selection and installation are particularly important during an engine rebuild. Incorrect ring dimensions, excessive end gaps, insufficient end gaps, worn piston grooves, or unsuitable cylinder surface finish can prevent the rings from sealing correctly. In severe cases, incorrect clearances can lead to ring breakage, piston damage, or cylinder scoring.
- Replacing worn or damaged components with the correct OE Match Piston Ring Set – VW103T4R or VW104T4R helps restore cylinder sealing, compression, oil control, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.
- Porsche 914 (1970-1976)
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, reference VW9600T4S66R. Designed for compatible VW engine applications, the piston rings fit into the machined grooves around each piston and create the essential sealing interface between the piston and cylinder wall.
Fits:Porsche 914 1.7 / 1.8L Big Bore
Ring size: 1/16 x 1/16 x 3/16
Number of CYL's: 4
This is a replacement ring Set for Retro Performance (VW9600T4S66) and (VW9600T4S66P) Kits.
Piston rings perform several critical functions within the 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 assist with transferring 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 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.
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 found 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. When the rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This can reduce cylinder compression, decrease engine performance, and increase crankcase blow-by.
- Worn oil-control rings can also allow excessive lubricating oil to enter the combustion chambers. This may result in increased oil consumption, blue exhaust smoke, spark plug fouling, carbon deposits, and increased emissions. Continued operation with poor ring sealing can contribute to accelerated wear of the pistons, cylinders, and other internal engine components.
- Correct installation is particularly important when fitting new piston rings. Incorrect ring end gaps, damaged piston grooves, unsuitable cylinder surface finish, or installing new rings into excessively worn cylinders can prevent proper bedding and sealing, resulting in continued compression problems, excessive oil consumption, or premature ring wear.
- Replacing worn or damaged components with this OE Match Piston Ring Set VW9600T4S66R helps restore cylinder sealing, compression, oil control, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.
- Porsche 914 (1970-1976)
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, reference VW9000T4R. Designed for compatible VW engine applications, the piston rings fit around the pistons and form a critical sealing interface between each piston and the cylinder wall.
Fits:Porsche 914 1.7L
Ring size: 2.0 x 2.0 x 5.0.
Number of CYL's: 4
Piston rings perform several essential functions inside the 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 piston and cylinder operation. The rings also help transfer heat from the pistons into the cylinder walls.
What This Product Does:
- Creates a seal between the pistons and cylinder walls.
- Helps retain combustion pressure within the cylinders.
- Supports strong and consistent engine compression.
- Reduces combustion gas leakage into the crankcase.
- Controls the amount of lubricating oil remaining on the cylinder walls.
- Helps prevent excessive engine oil 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.
- Difficulty maintaining consistent engine performance.
- Poor compression or leak-down test results.
- Carbon deposits caused by excessive oil entering the combustion chamber.
- Broken, worn, seized, or damaged rings discovered during engine disassembly.
- Excessive cylinder or piston ring-groove wear.
Why Replacement Matters:
- Piston rings are essential for maintaining the seal required for efficient engine combustion. When the rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This loss of sealing can reduce cylinder compression, decrease engine performance, and increase blow-by.
- Worn oil-control rings can also allow excessive lubricating oil into the combustion chambers. This may lead to increased oil consumption, blue exhaust smoke, spark plug fouling, carbon deposits, and increased emissions. Continued operation with poor ring sealing can contribute to further cylinder and piston wear.
- Correct installation is particularly important when replacing piston rings. Incorrect ring end gaps, damaged ring grooves, unsuitable cylinder surface finish, or installation into excessively worn cylinders can prevent new rings from sealing correctly and may cause premature failure.
- Porsche 914 (1970-1976)
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, reference VW9300T4R. Designed for compatible VW engine applications, the piston rings fit into precisely machined grooves around each piston and create the essential sealing interface between the piston and cylinder wall.
Fits:Porsche 914 1.8L
Ring size: 2.0 x 2.0 x 5.0
Number of CYL's: 4
Piston rings perform several critical functions inside the engine. The compression rings help contain combustion pressure above the piston, minimising 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 assist with transferring heat from the piston into the cylinder wall.
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 oil 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.
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.
- Oil contamination within the combustion chambers.
- Broken, worn, seized, or damaged rings discovered during engine disassembly.
- Excessive cylinder or piston ring-groove wear.
Why Replacement Matters:
- Piston rings are essential for maintaining the cylinder seal required for efficient compression and combustion. When the rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This reduces cylinder sealing and can contribute to lower compression, reduced engine performance, and excessive blow-by.
- Worn oil-control rings can allow excessive lubricating oil to enter the combustion chambers. This may result in increased oil consumption, blue exhaust smoke, spark plug fouling, carbon deposits, and increased emissions. Continued operation with poor ring sealing can also contribute to accelerated piston and cylinder wear.
- Correct installation is particularly important when fitting new piston rings. Incorrect ring end gaps, damaged piston grooves, unsuitable cylinder surface finish, or fitting new rings into excessively worn cylinders can prevent the rings from bedding and sealing correctly, potentially resulting in premature wear or continued compression and oil-control problems.
- Replacing worn or damaged components with this OE Match Piston Ring Set VW9300T4R helps restore cylinder sealing, compression, oil control, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.
- Porsche 914 (1970-1976)
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, available under references VW9400T4R and VW9500T4R. Designed for compatible VW 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 914 2.0L
Number of CYL's: 4
Piston rings perform several critical functions inside the 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 and cylinder operation. 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 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.
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 found 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. When the rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This can reduce compression, decrease engine performance, and increase crankcase blow-by.
- Worn oil-control rings can also allow excessive lubricating oil to enter the combustion chambers. This may result in increased oil consumption, blue exhaust smoke, spark plug fouling, carbon deposits, and increased emissions. Continued operation with poor ring sealing can contribute to further piston and cylinder wear.
- Correct installation is particularly important when fitting new piston rings. Incorrect ring end gaps, worn piston grooves, unsuitable cylinder surface finish, or fitting new rings into excessively worn cylinders can prevent proper bedding and sealing, resulting in continued compression problems, oil consumption, or premature ring wear.
- Replacing worn or damaged components with the correct OE Match Piston Ring Set – VW9400T4R or VW9500T4R helps restore cylinder sealing, compression, oil control, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.
- Porsche 914 (1970-1976)
Restore effective cylinder sealing, compression, and oil control during an engine rebuild with this OE Match Piston Ring Set, reference VW103T4RH. Designed for compatible VW engine applications, the piston rings fit into precisely machined grooves around each piston and create the critical sealing interface between the piston and cylinder wall.
Fits: Porsche 914
Ring size: 1/16 x 1/16 x 3/16
Number of CYL's: 4
Engine size: 2366
This is a replacement ring Set for Retro Performance (VW103T4S71) and (VW103T4S71P) kits.
Piston rings perform several essential functions within the 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 assist with transferring 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.
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 found 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. When the rings become worn, damaged, stuck, or lose their tension, combustion gases can escape past the pistons into the crankcase. This can reduce compression, decrease engine performance, and increase crankcase blow-by.
- Worn oil-control rings can allow excessive lubricating oil to enter the combustion chambers. This may 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, cylinders, 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 the rings from sealing correctly. Insufficient ring end clearance can cause the ends to contact as the engine reaches operating temperature, potentially resulting in broken rings, piston damage, or cylinder scoring.
- Replacing worn or damaged components with this OE Match Piston Ring Set VW103T4RH helps restore cylinder sealing, compression, oil control, and dependable engine performance when installed as part of a correctly measured and prepared engine rebuild.
- Porsche 914 (1970-1976)

Dimensions: 94x1.5mm / 90x1.75mm / 90x4mm
Fits: Porsche 914 2.0L 01/1972- 12/1975 (74kw/100Bhp)
Click picture for large parts diagram.
Diagram Ref No 21.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG198175
The product you are viewing cross references to these numbers
Piston Rings – Precision Engine Sealing & Performance for Porsche Models
The piston rings in your Porsche engine are critical components that maintain compression, regulate oil consumption, and ensure efficient combustion. Positioned around the pistons, they create a tight seal between the piston and cylinder wall, keeping combustion gases contained while allowing smooth piston movement.
At Design911, we supply a comprehensive range of piston rings designed for both classic and modern Porsche engines. Manufactured from high-strength, heat-resistant materials, these rings deliver exceptional sealing, reduced friction, and long-term reliability. Whether you’re performing a full engine rebuild or a top-end refresh, our quality piston rings are engineered for perfect fitment and optimum performance.
What Do Piston Rings Do?
Piston rings perform three vital functions within the
engine:
- Sealing
the combustion chamber – to prevent gas leakage and maintain
compression.
- Controlling
oil consumption – by scraping excess oil from the cylinder walls.
- Conducting heat – transferring it from the piston to the cylinder wall to prevent overheating.
These rings are essential for maintaining engine
efficiency, power output, and longevity. Properly functioning piston rings
ensure consistent compression, clean emissions, and smooth performance.
Why Do Piston Rings Fail?
Piston rings are subject to intense heat, pressure, and friction. Over time, these conditions can lead to wear, loss of sealing ability, or even engine damage.
Common Causes of Piston Ring Failure Include:
- Excessive
wear or scoring from poor lubrication or debris.
- Carbon
build-up causing sticking or uneven sealing.
- Overheating
that leads to ring warping or loss of tension.
- Corrosion
or fatigue from oil contamination.
- Improper installation during rebuilds or maintenance.
Symptoms of worn piston rings include blue exhaust smoke, loss of compression, reduced performance, or excessive oil consumption — all signs that replacement is required.
Why Replace Piston Rings?
Replacing worn or damaged piston rings restores compression, improves combustion efficiency, and protects your Porsche engine from further wear. Our high-performance piston rings are built to withstand extreme conditions, ensuring consistent sealing and reduced friction.
Key Benefits:
- Restores compression and engine power.
- Reduces oil consumption and exhaust smoke.
- Improves fuel efficiency and combustion quality.
- Constructed from durable, heat- and corrosion-resistant alloys.
- Direct-fit
compatibility for a wide range of Porsche models.
- Ideal for rebuilds, restorations, or performance upgrades.
Investing in premium-quality piston rings ensures lasting performance, smoother running, and optimal engine reliability.
Highlights:
- Precision-engineered piston rings for Porsche engines.
- Restores compression, performance, and oil control.
- Made from high-strength, wear-resistant materials.
- Perfect fit for classic and modern Porsche models.
- Essential for rebuilds and long-term engine health.
- Ensures smooth, efficient combustion and lower emissions.