MAHLE 41907CP.010 Premium OE Piston Ring Set .010 Over

The MAHLE 41907CP.010 is a premium OE-replacement piston ring set sized .010" oversize for engines that have been bored .010" over standard. Engineered to original equipment specifications, this CP-series ring set delivers factory-correct tension, sealing, and oil control for a dependable, long-lasting engine rebuild.

Key Features:

• Pre-lapped contact faces allow the rings to seat immediately under normal operation, virtually eliminating traditional break-in time
• SAE 9254 high-alloy steel base material provides superior tensile and yield strength, extended fatigue resistance, and increased hardness compared to standard steel
• Barrel-faced compression rings with CNC-controlled gap chamfer optimize compression efficiency and minimize blow-by
• Reverse-twist intermediate (second) rings offer improved groove side sealing and taper-race machining for enhanced cylinder wall contact
• CP-20 oil ring assemblies feature an exclusive 20-degree ear angle for maximum side sealing in the piston oil ring groove, plus a chemically polished expander for superior oil drain-back
• OE form, fit, and function — manufactured to the same standards as original equipment rings
• .010" oversize — designed for engines that have been bored .010" over standard bore; confirm bore diameter and surface finish before installation

MAHLE is one of the world's largest OE piston ring manufacturers, supplying rings to major automotive and diesel engine platforms globally. The 41907CP.010 ring set is the choice of professional engine builders who demand consistent quality, reduced friction, and long service life in every rebuild.