MAHLE 3150178.045 Performance Piston Ring Set Bore - 4.178

The MAHLE 3150178.045 is a premium piston ring set engineered for 4.178" bore applications (+.045" oversize). This professional-grade ring set combines advanced materials and precision manufacturing to deliver superior sealing, reduced friction, and extended durability in high-performance and racing engines.

Key Features:

• 4.178" bore diameter (+.045" oversize) with file-fit design for precise end gap adjustment
• 1/16", 1/16", 3/16" ring width configuration for versatile applications
• Ductile iron top compression ring with plasma-moly barrel face for rapid break-in and wear resistance
• Reverse twist taper-faced cast iron second ring for enhanced groove side sealing
• Three-piece oil control ring assembly optimized for superior oil management
• Ultra-flat ring flanks maximize ring-to-piston sealing and minimize blow-by
• Standard tension design for reliable performance across varied operating conditions
• Set includes rings for one cylinder (8 sets required for V8 applications)

MAHLE pioneered the use of computer simulation and development tools to engineer piston rings that minimize friction and provide measurable horsepower gains. With over 90 years of motorsports heritage, MAHLE ring sets are the choice of professional engine builders and racers worldwide, delivering race-proven technology for street and track applications.