Piston Ring Kit

This piston ring set ensures proper sealing of the combustion chamber in your engine. It plays a vital role in maintaining compression and regulating oil consumption for efficient performance. The set is designed for a standard bore diameter of 84.00 mm. It consists of three distinct rings with specific heights. The top compression ring measures 1.75 mm in height. The second compression ring also has a height of 1.75 mm. The oil control ring at the bottom has a height of 2.00 mm. These precise dimensions allow for a correct fit within the piston grooves.

Functionally, these rings work together to prevent combustion gases from escaping past the piston. They also facilitate heat transfer from the piston to the cylinder wall which aids in cooling. The oil control ring specifically manages the oil film on the cylinder liner to prevent it from entering the combustion chamber. This action helps maintain engine power and reduces potential emissions.

We offer this component from MAHLE which produces reliable engine parts. You can identify this specific item by the supplier code 081 RS 00105 0N0. It is suitable for a broad selection of BMW vehicles. The application list includes the BMW 3 Series, 5 Series, and 7 Series. It also fits X models such as the X3, X5, and X6 alongside various Alpina models like the D3 and D5. Always check the bore diameter to confirm compatibility with your specific engine block.