MAHLE 40565CP Original Plasma-Moly Piston Ring Set

The MAHLE 40565CP Original Piston Ring Set is a premium OE-quality replacement engineered to meet or exceed original equipment standards. MAHLE is a globally recognized leader in engine component technology, and these rings are developed using the same specifications and materials found in original factory applications—delivering reduced friction, lower ring mass, minimized oil consumption, and extended service life.

Key Features:

• Pre-lapped design seats immediately upon installation, virtually eliminating traditional break-in time
• Optimized ring materials and coatings with precisely tuned ring tension for reduced friction and long service life
• Barrel-faced top compression rings with CNC-controlled gap chamfer for improved compression sealing and reduced blow-by
• Reverse-twist intermediate rings with taper race machining for superior groove side sealing and enhanced cylinder wall contact
• CP-20 oil ring assemblies feature an exclusive 20-degree ear angle for maximum side sealing against the cylinder wall
• Chemical-polished oil ring expander promotes enhanced oil drain-back and superior oil control
• SAE 9254 high-alloy steel base material provides higher tensile and yield strength, extended fatigue resistance, and increased hardness
• Designed for OE form, fit, and function — a direct replacement for worn or damaged factory piston rings

MAHLE Original piston ring sets are the preferred choice of professional engine builders, offering installer-friendly design and the confidence of OE-level engineering in every set.