MAHLE 3030258 Chrome Ring Set 4.320 in. Bore 3/16 in. CP20 Oil Ring Standard Tension

The MAHLE 3030258 is a chrome piston ring set designed for a 4.3200-inch bore diameter, featuring a 3/16-inch edge width and MAHLE's proprietary CP20 oil ring assembly at standard tension. Engineered for durability and reliable sealing in demanding engine rebuilds, this ring set reflects MAHLE's century-long heritage as one of the world's leading piston ring manufacturers.

Key Features:

• 4.3200-inch bore diameter for precise fitment in standard bore applications
• Chrome face coating on compression rings for extended wear resistance and long service life
• 3/16-inch edge width oil ring for optimized groove fitment
• CP20 oil ring assembly featuring a 20-degree ear angle for superior side sealing against the cylinder wall
• Standard tension oil ring design balances effective oil control with reduced friction
• Special chemical polish on the oil ring expander promotes enhanced oil drainback
• Pre-lapped ring surfaces seat quickly, minimizing engine break-in time
• Ring materials and coatings optimized for reduced friction and extended service life

MAHLE piston ring sets are trusted by professional engine builders and rebuilders worldwide. This chrome ring set is the right choice for reliable performance and lasting engine health in standard bore rebuilds.