Victor 42156CP Premium Plasma-Moly Piston Ring Set 4.090in Bore V8

The Victor (MAHLE) 42156CP Premium Piston Ring Set is a plasma-moly piston ring set engineered for V8 engines with a 4.090-inch bore, featuring ring groove thicknesses of 1.2mm / 1.2mm / 2.0mm.

Key Features:

• SAE 9254 High Alloy Steel Construction — delivers higher tensile and yield strength, extended fatigue resistance, and increased material hardness to handle extreme firing pressures
• Patented HV385 Thermal Spray Face Coating — a proprietary blend of hard, self-lubricating metal and ceramic alloys providing superior scuff resistance and durability comparable to gas nitride, PVD, and DLC treatments
• Pre-Lapped for Immediate Seating — rings are pre-lapped at the factory, virtually eliminating break-in time and simplifying installation
• Barrel-Faced Compression Rings — CNC-controlled gap chamfer optimizes compression efficiency and minimizes blow-by
• Reverse Twist Napier Second Rings — SAE 9254 high alloy steel napier design provides superior oil control, improved combustion gas management, top ring stability, and best-in-class sealing
• CP-20 Oil Ring Assemblies — exclusive 20-degree ear angle ensures the best possible side seal against the cylinder wall and groove; chemically polished expander enhances oil drainback
• OEM Cross-Reference: 168092206AA
• UPC: 027067874405
• Country of Origin: United States

Engineered to meet the demands of high-performance and high-mileage rebuild applications, these rings reduce friction and ring mass while minimizing engine oil consumption for longer service life. A trusted choice for professional engine builders and experienced DIYers alike.