MAHLE 42249CP Plasma-Moly Premium Engine Piston Ring Set

The MAHLE 42249CP is a premium plasma-moly piston ring set engineered to deliver superior sealing, reduced friction, and long-lasting performance. Part of MAHLE's renowned CP-series lineup, this ring set reflects decades of motorsport-derived engineering and precision manufacturing.

Key Features:

• Pre-lapped design seats immediately upon installation, virtually eliminating traditional break-in time
• Plasma-moly top compression ring with barrel-faced contact area for more efficient compression and reduced blow-by
• CNC-controlled gap chamfer on compression rings optimizes sealing and minimizes combustion gas leakage
• Intermediate ring with reverse twist design provides improved groove side sealing, with taper race machining to enhance cylinder wall contact
• CP-20 oil ring assembly features an exclusive 20-degree ear angle for maximum side sealing against the cylinder wall
• Special chemical polish on the oil ring expander promotes enhanced oil drain-back
• Ring materials, coatings, and tension levels are optimized for reduced friction and extended service life
• Ultra-flat ring flanks maximize ring-to-piston groove sealing

MAHLE piston ring sets are the preferred choice of professional engine builders, combining installer-friendly design with race-proven technology for both performance builds and quality engine rebuilds.