Mahle Rings GMC Pass 173 2.8L Eng 85-89 GMC Trks 173 2.8L Eng 85-93 Moly Ring Set

The Mahle Original 41474 is a premium piston ring set designed for installer-friendliness. These piston rings are pre-lapped for immediate seating, virtually eliminating break-in time.

They feature optimized ring materials, coatings, and tension for reduced friction and extended life. The compression rings have a barrel-faced contact area for efficient compression and a CNC-controlled gap chamfer. Intermediate rings utilize a reverse twist design for improved groove side sealing, and taper race machining for enhanced contact. The CP-20 oil ring assemblies include a 20-degree ear angle for optimal side seal against the cylinder wall and a special chemical polish on the expander for enhanced oil drain back.