MAHLE 3150003-065 Precision-Ground Performance Piston Ring Set +0.065" Overbore

The MAHLE 3150003-065 is a Precision-Ground Performance piston ring set engineered to deliver OE-quality sealing, premium materials, and trouble-free installation. Manufactured under strict quality controls, this ring set is built to exacting tolerances in a +0.065" overbore size, making it ideal for engine rebuilds and performance overhauls requiring precise fitment.

MAHLE's Precision-Ground Performance rings feature premium top compression rings—available in moly or chrome-faced configurations depending on application—for long-lasting durability under severe operating conditions. The 3-piece oil ring assembly uses a stainless steel expander between two chrome-faced steel rails, providing excellent conformability to the cylinder bore for optimal oil control.

Key Features:

• OE-quality materials manufactured under strict quality controls for consistent, reliable performance
• Premium top compression rings with moly or chrome face coatings for extended service life under severe conditions
• Special ring face contours and torsional designs ensure optimum compression sealing and reduced blowby
• 3-piece oil ring assembly with stainless steel expander and chrome-faced steel rails for superior cylinder wall conformability
• Foolproof installation design—rings are built so they cannot be installed incorrectly, saving time and preventing errors
• High-strength materials optimized to minimize friction and extend engine life
• +0.065" overbore sizing for use in bored or worn cylinders requiring oversize rings

Whether you're performing a complete engine overhaul or a targeted re-ring, the MAHLE 3150003-065 piston ring set delivers the precision, performance, and reliability that professional engine builders demand.