Mahle MS 3.771in+.005in .043 .043 3.0mm File Fit Rings

This is a Mahle MS piston ring set, designed for universal applications. These rings measure .043 inches for the top and second rings, with a 3.0mm oil ring. They are file-fit, meaning you'll need to gap them to your specific piston and cylinder bore during installation. This set is intended for engines where a +.005 inch oversize is required, offering a precise fit for rebuilt engines.

Mahle is a well-known name in engine components, and this ring set reflects their focus on engine building. The low-tension design can help reduce friction, potentially improving engine efficiency. Because these are file-fit, they give you the flexibility to achieve a perfect seal in a variety of engine builds, especially when dealing with slightly worn bores or custom piston applications. Proper gapping is crucial for performance and longevity, so take your time during installation.

Keep in mind that this ring set is not CARB approved and cannot be shipped to California. Ensure you check all manufacturer specifications and local regulations before installation.