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The Mahle OE moly ring set for 2001–2003 GMC trucks with the 6.6L Duramax (403 CID) VIN 1 diesel engine is a piston ring kit that follows MAHLE’s OE-driven design. MAHLE piston rings aim to reduce friction and ring mass, minimize engine oil consumption, and extend service life, reflecting the brand’s focus on modern piston ring technology.
Mahle Rings GMC Trk 6.6L 403 CID Duramax Turbo Diesel 2001-2003 VIN 1 Moly Ring Set
