Mahle Rings 4.190in Bore Dia 5/64in Edge Width Ductile Plasma Moly Top Ring Moly Ring Set

Starting with a ductile iron top ring featuring a plasma-moly coating is a smart choice for engine rebuilds. This Mahle OE ring set, part number 3000199, is built for a 4.190-inch bore diameter and uses a 5/64-inch edge width for the top ring, which is a common size for many performance and heavy-duty applications. The plasma-moly coating on the top ring helps reduce friction and wear, especially during the critical break-in period, while the ductile iron base provides strength and resistance to scuffing.

This set includes moly rings, which are known for their excellent sealing capabilities and durability. Molybdenum is a hard, wear-resistant material that helps maintain a tight seal between the piston and cylinder wall, improving compression and reducing oil consumption. Mahle OE is a well-known name in engine components, and this ring set is a solid option for anyone rebuilding an engine where reliable performance and longevity are important.

When installing these rings, pay close attention to the orientation of each ring and ensure the cylinder walls are properly honed for optimal performance and break-in. Proper installation is key to getting the most out of these well-made components.