Mahle Rings GMC Trk 4.8L/5.3L 1999-2003 Moly Ring Set

The Mahle 41859CP.020 is a set of premium piston rings designed for 1999-2013 4.8L and 5.3L LS engines with a 3.800" bore. These rings are pre-lapped for immediate seating and virtually eliminate break-in time. They are optimized for reduced friction and extended life.

The compression rings feature a barrel-faced contact area for efficient compression and CNC-controlled gap chamfer to reduce blowby. Intermediate rings have a reverse twist design for better sealing and taper race machining for enhanced contact. The CP-20 oil ring assemblies offer a 20-degree ear angle for superior side seal and a chemically polished expander for enhanced oil drainback.