Mahle MS 4.050in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings

This is a Mahle MS piston ring set, sized at 4.050 inches with a +.005 inch file fit. These rings are designed for engine rebuilding where precise cylinder sealing is critical. The set includes three rings with specific dimensions: 1.0mm for the top ring, 1.0mm for the second ring, and 2.0mm for the oil control ring. The file-fit design means you'll need to gap the end of the top ring to match your specific cylinder bore, which is a common practice for performance or custom engine builds to ensure optimal compression and oil control.

Mahle is a well-known name in engine components, and this ring set reflects their focus on providing parts for engine overhauls. The standard tension is suitable for a wide range of applications, and the file-fit nature allows for fine-tuning to achieve a perfect seal in your engine's cylinders. This is a solid option if you're rebuilding an engine and need reliable piston rings that allow for custom gapping.