Mahle MS 4.030in+ .005in 1/16in 1/16in 3/16in File Fit Rings

These Mahle file-fit piston rings are designed for engine rebuilding where precise control over the piston ring gap is crucial. The rings measure 1/16 inch for the top and second rings, and 3/16 inch for the oil ring, with a low tension design. They are also specified as +.005 inch, indicating they are intended for use with pistons that have been machined to a slightly larger bore size, allowing for a custom fit.

The file-fit nature of these rings means you'll need to file the ends to achieve the exact gap required for your specific engine build. This is a common practice for performance or custom engine builds where standard ring gaps might not be optimal. Mahle is a well-known name in engine components, and these rings are made to their standards for reliable performance in your rebuilt engine.

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 correct ring gap specifications and installation procedures.