Mahle Rings GMC Trk 6.6L 403 CID Duramax Turbo Diesel 2001-2003 VIN 1 Moly Ring Set - 41909.020

MAHLE(R) piston rings are the most technically advanced piston rings in the industry. Driven by OE requirements; reducing friction and ring mass while minimizing engine oil consumption, and providing longer service life. MAHLE piston rings lead the industry for the latest piston ring technology.