MAHLE 51616CP Engine Piston Ring Set Standard Bore 4.000 Inch

The MAHLE 51616CP is a premium OE-quality piston ring set designed for engine rebuilds requiring standard bore specifications. This complete ring set features MAHLE's proven CP-20 oil ring technology with an exclusive 20-degree ear angle that provides superior cylinder wall sealing and simplified installation.

Technical Specifications:

• Bore Diameter: 4.000 inches (101.6mm) - Standard Size
• Top Compression Ring: 2.0mm thickness, cast iron with barrel face and positive twist for instant break-in
• Second Compression Ring: 1.5mm thickness, cast iron construction for superior oil control and combustion gas management
• Oil Control Ring: 4.0mm thickness, CP-20 design with stainless steel construction and standard tension
• Sold as a complete set for V8 applications (8 cylinders)

Key Features:

• Cast iron and ductile iron construction for exceptional durability and heat resistance
• Positive twist barrel-face top ring design enables instantaneous seating and break-in
• High tensile strength and yield strength with low ring mass for reduced friction
• Pre-lapped rings for immediate seating with virtually no break-in time required
• Optimized ring materials, tension, and coatings for extended service life
• Superior oil control with minimal power loss and excellent blow-by control

MAHLE is the world's largest manufacturer of piston rings, bringing over 100 years of engineering expertise and OE technology to the aftermarket. These rings offer stress resistance, minimal groove wear, excellent cylinder conformability, and oil economy—making them the preferred choice of professional automotive technicians for engine rebuilds and performance applications.