MAHLE 41496CP.040 Original Engine Piston Ring Set Oversize - 0.040

The MAHLE Original 41496CP.040 is a premium engine piston ring set engineered to OE form, fit, and function standards. The .040" oversize designation makes this set designed for use with a 0.040-inch overbore cylinder, commonly used during engine rebuilds and re-rings. MAHLE is one of the largest OE piston ring manufacturers in the world, delivering the latest piston ring technology across thousands of applications.

Key Features:

• Installer-Friendly Design: Rings arrive pre-lapped to seat immediately, virtually eliminating break-in time and simplifying the rebuild process
• Optimized Materials & Coatings: SAE 9254 high-alloy steel base material delivers higher tensile and yield strength, extended fatigue resistance, and increased hardness for long service life
• Top Compression Ring: Barrel-faced contact surface promotes more efficient compression sealing, while a CNC-controlled gap chamfer reduces blowby
• Intermediate (Second) Ring: Reverse-twist Napier design provides superior groove-side sealing and enhanced oil control; taper-race machining sharpens cylinder wall contact
• CP-20 Oil Ring Assembly: Exclusive 20-degree ear angle delivers the best possible side seal within the piston oil ring groove; chemically polished expander promotes enhanced oil drainback and simplified installation
• Premium Coating Options: Available coatings and materials include cast iron chrome, plasma-moly, ductile iron chrome, gas nitride stainless steel, SAE 9254 steel chrome, HV385, and PVD depending on application
• Reduced Friction & Oil Consumption: Ring tension and mass are engineered to OE standards—minimizing engine oil consumption while extending service intervals

MAHLE Original piston ring sets are the trusted choice for professional engine builders and rebuilders seeking OE-grade quality with the ease of an aftermarket fitment. This set is sold as a complete ring set for one engine.