MAHLE 42126CP.030 Premium Chrome Piston Ring Set GM 3.2L V6 0.030 Oversize

The MAHLE 42126CP.030 is a premium chrome piston ring set engineered for the GM 3.2L V6 LA3 engine at a 0.030-inch oversize bore. As the world's largest piston ring manufacturer, MAHLE designs these rings to meet or exceed original equipment standards, delivering a direct-fit solution for engine rebuilds and overhauls.

Each set is pre-lapped at the factory for immediate seating, virtually eliminating traditional break-in time and getting rebuilt engines up to spec faster. Ring materials, coatings, and tension are carefully matched to the specific application for reduced friction and long service life.

Key Features:

• Chrome facing on compression rings for superior wear resistance and durability
• Barrel-faced top ring contact area for more efficient compression sealing
• CNC-controlled gap chamfer to optimize compression and reduce blow-by
• Reverse-twist intermediate ring design for enhanced groove side sealing and improved cylinder wall contact
• CP-20 oil ring assembly with a 20-degree ear angle for maximum side seal against the cylinder wall
• Chemically polished oil ring expander for enhanced oil drain-back performance
• Ring thickness: 1.2mm (top), 1.5mm (second), 2.5mm (oil)
• 0.030-inch oversize bore for use in engines that have been bored 0.030" over standard

MAHLE Original piston rings are manufactured to OE specifications, ensuring precise fitment and reliable compression sealing, oil control, and long-term durability in rebuilt engines.