MAHLE 41276-030 Precision-Ground Performance Piston Ring Set Oversize - 0.030

The MAHLE 41276-030 is a precision-ground performance piston ring set machined to a +0.030" oversize bore specification, designed for engine rebuilds and re-ring applications demanding OE-level quality and durability. As the world's largest piston ring manufacturer, MAHLE engineers these rings to meet or exceed original equipment standards, making them the trusted choice of professional engine builders and rebuilders.

Key Features:

• Precision-ground construction ensures exact tolerances for optimal compression sealing and reduced blow-by
• +0.030" oversize bore sizing designed for re-bored or worn cylinder applications
• Premium ring materials with optimized coatings — moly or chrome-faced top compression rings available depending on application — for extended service life under demanding conditions
• 3-piece oil control ring assembly features a stainless steel expander between two chrome-faced steel rails for superior conformability within the cylinder bore
• Special ring face contours and torsional designs promote optimum oil control and compression retention
• Installer-friendly design — rings are engineered so they cannot be installed incorrectly, simplifying the rebuild process
• Pre-lapped finish allows rings to seat immediately, minimizing break-in time
• High-strength materials with CNC-controlled gap chamfer to reduce blow-by and maximize compression efficiency

MAHLE piston rings are driven by OE requirements, with a focus on reducing friction and ring mass while minimizing engine oil consumption and maximizing service life. The 41276-030 ring set is engineered to restore engine compression, reduce oil consumption, and deliver reliable long-term performance in rebuilt engines.