MAHLE 42110CP Premium Engine Piston Ring Set

The MAHLE 42110CP is a premium OE-quality engine piston ring set engineered to deliver superior sealing, reduced friction, and long service life. As one of the world's largest OE piston ring manufacturers, MAHLE designs these rings to meet or exceed original equipment specifications in both form, fit, and function.

These rings are built on an SAE 9254 high-alloy steel base material, providing higher tensile and yield strength, extended fatigue resistance, and increased material hardness compared to standard ring materials. Each set is pre-lapped at the factory to allow immediate seating and virtually eliminate break-in time, making installation straightforward for professional engine builders and experienced rebuilders alike.

Key Features:

• Pre-lapped construction — seats immediately, virtually eliminating break-in time
• Barrel-faced compression rings — optimized contact area for efficient compression and reduced blow-by
• CNC-controlled gap chamfer on compression rings for precise fit and consistent sealing
• Reverse-twist intermediate rings with taper-race machining for superior groove side sealing and enhanced cylinder wall contact
• CP-20 oil ring assemblies featuring an exclusive 20-degree ear angle for maximum side sealing in the oil ring groove
• Chemically polished oil ring expander for enhanced oil drain-back performance
• Optimized ring tension and coatings per application for reduced friction and extended engine life
• Engineered to OE form, fit, and function standards

MAHLE piston rings are trusted by engine builders worldwide and are backed by decades of OE manufacturing expertise. The 42110CP ring set is the ideal choice for engine rebuilds requiring a high-quality, installer-friendly solution that delivers reliable performance from the first start.