Mahle MS 4.560in+ .005in 1.5 1.5 3.0 mm File Fit Rings

Mahle is well-known for making solid engine components, and these file-fit piston rings are a good example of their work. These rings are designed for engine rebuilds where precise fitment is key. The set includes rings with dimensions of 1.5mm for the top and second rings, and a 3.0mm oil ring, all with standard tension. They are also file-fit, meaning you can adjust the end gap for a perfect seal in your specific cylinder bore, which is a common practice for performance or custom engine builds.

This set is sized at 4.560 inches with an additional 0.005 inches, often referred to as a +.005in size. This allows for a bit more clearance in the cylinder bore, which can be beneficial in certain engine applications or when dealing with slightly worn bores. The file-fit nature means you'll need to carefully measure and file the end gap to match your engine's requirements, ensuring optimal compression and oil control.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for proper installation procedures and ring gap specifications.