MAHLE 3150072-035 Clevite 315-0072-35 Plasma-Moly Piston Ring Set 4.030 in. Bore 8-Cylinder

The MAHLE Clevite 315-0072-035 is a plasma-moly piston ring set designed for high-performance and rebuild applications on 8-cylinder engines with a 4.030-inch bore. Plasma-moly rings are widely regarded as the preferred choice for performance and racing builds, offering superior wear resistance, faster break-in, and excellent oil control compared to standard cast iron rings.

This is a file-fit ring set, meaning the end gaps are left intentionally oversized so the installer can custom-fit each ring to the exact bore for precise end gap clearance — a critical step for optimal engine performance and longevity.

Ring Set Specifications:

• Ring Type: Plasma-moly faced
• Bore Diameter: 4.030 in.
• Fit Type: File Fit
• Top Compression Ring Thickness: 1/16 in.
• Second Compression Ring Thickness: 1/16 in.
• Oil Control Ring Thickness: 3/16 in.
• Engine Configuration: 8-Cylinder

Plasma-moly (plasma-sprayed molybdenum) facing on the compression rings provides a low-friction, hard-wearing surface that seats quickly and resists scuffing under high heat and load conditions. This MAHLE Clevite ring set is an ideal choice for engine rebuilds, performance street builds, and competition applications where reliable sealing and durability are essential.