MAHLE 42264.010 Engine Piston Ring Set +0.010" Oversize OE Replacement

The MAHLE 42264.010 is an OE-quality engine piston ring set engineered to exacting original equipment specifications. The .010 suffix designates a +0.010-inch oversize bore dimension, making this set the correct choice for engines that have been bored or honed to the first oversize during a rebuild.

Key Features:

• OE-Grade Materials: Rings are manufactured from premium stainless steel and carbon steel alloys with advanced surface coatings to meet or exceed factory specifications
• Advanced Ring Coatings: Upper compression ring features a gas-nitride or PVD facing for maximum wear resistance and reduced friction
• Barrel-Faced Compression Ring: The top compression ring's barrel-faced contact area promotes efficient sealing and reduces cylinder wall wear
• Reverse Twist Second Ring: The intermediate ring uses a reverse twist profile for superior groove side sealing and enhanced oil control
• Three-Piece Oil Control Assembly: The oil control ring assembly includes top and bottom rails with an expander, providing optimal cylinder wall scraping and oil drain-back
• Pre-Lapped for Easy Installation: Rings are pre-lapped at the factory to seat immediately, virtually eliminating traditional break-in requirements
• Optimized Ring Tension: Ring tension is calibrated to reduce friction and parasitic drag while maintaining a durable, long-lasting cylinder seal

MAHLE is a globally recognized OE supplier and aftermarket leader in piston ring technology. MAHLE piston rings are among the most technically advanced in the industry, driven by OE requirements to reduce friction and ring mass while minimizing engine oil consumption and providing longer service life. This +0.010" oversize ring set is an essential component for any engine rebuild where cylinders have been machined beyond standard bore dimensions.