MAHLE 41555CP.030 Original Engine Piston Ring Set - 0.030 in. Oversize

The MAHLE Original 41555CP.030 is a premium OE-quality engine piston ring set manufactured to 0.030" (0.762mm) oversize specifications. Engineered to meet or exceed original equipment standards, this ring set is designed for engine rebuilds requiring a first oversize bore and delivers long-lasting sealing performance and reduced oil consumption.

Key Features:

• Pre-lapped design seats immediately upon installation, virtually eliminating traditional break-in time
• Plasma-moly top compression ring with barrel-faced contact profile for efficient combustion sealing and reduced blow-by
• CNC-controlled gap chamfer on compression rings optimizes ring-to-bore fit and minimizes blow-by
• Intermediate ring with reverse twist design for superior groove side sealing, paired with taper race machining to enhance cylinder wall contact
• CP-20 oil ring assembly features an exclusive 20-degree ear angle for maximum side seal against the cylinder wall
• Chemically polished oil ring expander promotes enhanced oil drain-back for reduced oil consumption
• Ring materials and coatings optimized per application to reduce friction, ring mass, and extend service life
• 0.030" oversize — designed for bores that have been machined 0.030" over standard diameter

MAHLE Original piston rings are driven by OE requirements and represent the same technology used in original equipment applications worldwide. This ring set provides engine builders and technicians with a reliable, installer-friendly solution for engine overhaul and rebuild applications.