Piston ring set. Porsche 986 3.2L Boxster / 987 3.2L Boxster / Cayenne 4.5L  ❭  99610303351

Piston Ring Set, ø93 mm, Ring 1,20 x 1,50 x 2,00 mm.
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.

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