Clevite 50564CP030 Piston Ring Set Bore Oversize - 4.030 030

The Clevite 50564CP030 is a premium MAHLE Original piston ring set designed for high-performance and OE replacement applications. This set features a 4.030-inch bore diameter with a +.030" oversize specification, making it compatible with popular small block Ford (289/302/351/400), Chevrolet (327/350), and Chrysler (360) engines that have been bored oversize.

Key Features:

• Complete 8-cylinder piston ring set from MAHLE, the world's largest piston ring manufacturer
• 4.030" bore diameter (+.030" oversize)
• High tensile strength with excellent hardness and low ring mass
• Low-tension design reduces friction while maintaining superior cylinder wall seal
• Pre-lapped rings for immediate seating with minimal break-in time
• CP-20 design features a 20-degree ear angle for optimal cylinder wall sealing
• Engineered for stress resistance and minimal groove pound-out
• Provides excellent oil economy and blow-by control

MAHLE Original piston rings (formerly Perfect Circle) represent over 100 years of engineering excellence and OE technology. These rings deliver long service life, superior cylinder conformability, and reduced friction for both modern computer-controlled engines and classic rebuilds. The optimized ring materials, tension, and coatings ensure reliable performance across diverse applications.