MAHLE 41473CP.020 Engine Piston Ring Set Moly 3.524" Bore

The MAHLE 41473CP.020 is a premium engine piston ring set engineered for GMC passenger vehicle 173 (2.8L) engines from 1987-1989 and 189 (3.1L) engines from 1988-1993. This professional-grade ring set features a 3.524 inch (89.510mm) bore diameter and incorporates MAHLE's advanced molybdenum coating technology for superior wear resistance and durability.

Advanced Engineering Features:

• Pre-lapped rings that seat immediately, virtually eliminating break-in time for faster installation
• Cast iron top ring with 1.5mm thickness and barrel-faced contact area for efficient compression
• CNC-controlled gap chamfer optimizes compression and reduces blow-by
• Reverse twist intermediate rings provide better groove side sealing with taper race machining
• Exclusive CP-20 oil ring assembly with 20 degree ear angle for optimal side seal against cylinder walls
• Special chemical polish on oil ring expander enhances oil drain back
• Optimized ring tension and materials reduce friction while extending service life

MAHLE is one of the world's largest OE piston ring manufacturers, delivering cutting-edge technology driven by original equipment requirements. Each ring set is designed to minimize engine oil consumption, reduce friction and ring mass, and provide extended durability. The set includes top compression rings, intermediate rings, and oil control rings. Sold as a complete set for one cylinder bank (6 sets per package for V6 applications).