Mahle Rings Plasma Moly Steel 1.5MM x .151 RW 4.005in Bore Diameter Moly Ring Set

If you're rebuilding the top end of your engine, getting the right piston rings is crucial for proper sealing and performance. These Mahle OE piston rings are designed for a 4.005-inch bore, ensuring a precise fit for your pistons. They feature plasma moly steel construction, which is known for its strength and resistance to wear, helping to maintain a good seal between the piston and cylinder wall over time.

The 1.5mm top ring and .151-inch second ring dimensions are standard for many engine builds, and the moly coating on these rings helps reduce friction during break-in and throughout the engine's life. This means less wear on both the rings and the cylinder walls, contributing to a longer-lasting engine. Mahle is a well-known name in engine components, and these rings are a solid option for anyone looking for reliable parts for their engine rebuild.