Womala Engine Piston Ring Kit 30750896 STD Piston Ring for Volvo XC60 S60 S80

Core Functions

• Combustion Gas Sealing: The top two compression rings block high-pressure combustion gases from leaking into the crankcase. This maintains maximum cylinder pressure, ensuring efficient power output and preventing fuel waste (leaked gas reduces combustion efficiency).
• Oil Control: The bottom oil control ring scrapes excess engine oil from the cylinder wall during piston upward movement, returning it to the oil pan. This prevents oil from being drawn into the combustion chamber (which causes “oil burning,” blue exhaust smoke, and increased oil consumption) while keeping the cylinder wall lubricated to reduce wear.
• Heat Transfer: The piston rings conduct part of the piston’s heat (absorbed from combustion) to the cylinder wall, which then dissipates it via the engine cooling system. This prevents the piston from overheating and maintains its structural integrity.

 Compatible Vehicles

This Engine Piston Ring Kit (OE: 30750896, STD size) is tailored for the following Volvo models and their respective year ranges:

1. “STD” (standard) size means this kit is only for cylinders with original factory dimensions—it cannot be used for overbored cylinders (which require “oversize” piston rings, e.g., +0.25mm, +0.50mm). Confirm cylinder bore size via a micrometer before installation.
2. Piston ring kits are engine-specific (e.g., 2.0L turbo vs. 3.0L inline-6) even for the same model. Verify compatibility with your vehicle’s engine displacement via its VIN (Vehicle Identification Number) or consult Volvo’s official service manual.

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