MAHLE 3150004-015 Clevite Plasma-Moly Piston Ring Set 4.130 in. Bore File Fit 8-Cylinder

The MAHLE Clevite 315-0004.015 is a plasma-moly file-fit piston ring set engineered for high-performance 8-cylinder engines with a 4.130-inch bore. Part of MAHLE's legendary Clevite performance ring line, this set delivers the durability and sealing efficiency demanded by serious engine builders and performance enthusiasts alike.

Plasma-moly face coating on the top compression ring provides exceptional wear resistance and rapid break-in characteristics, making it a trusted choice for performance street, strip, and racing applications. The file-fit design allows the engine builder to precisely set end gap for their specific application, ensuring optimal combustion sealing and power retention.

Key Features:

• Plasma-moly top ring — ductile iron construction with plasma-sprayed molybdenum face coating for superior scuff resistance and long service life
• THG (Tapered Hook Groove) second compression ring — provides superior oil control, improved combustion gas management, and enhanced top ring stability
• CP-20 oil control rings — standard tension oil rings for effective oil film management
• File-fit design — allows precise end-gap adjustment to match specific engine build requirements
• 4.130 in. bore diameter — with a 0.015 in. overbore designation
• Ring thickness: 1/16 in. top, 1/16 in. second, 3/16 in. oil
• 8-cylinder set — includes complete ring complement for one 8-cylinder engine

MAHLE Clevite plasma-moly ring sets are a go-to solution for engine rebuilders seeking a proven performance upgrade over standard OE-style rings. The combination of moly coating, precision file-fit tolerances, and quality ductile iron construction makes this set well-suited for high-compression, high-horsepower builds.