The MAHLE OE cast piston set for GM 6.6L Duramax diesel engines (.040 over) is an OE-quality replacement supplied with mounted piston rings, pin and clips for convenience. OE features include compensated ring grooves to ensure proper ring loading and expansion-controlled designs to preserve small fitting clearances, reducing noise, wear and emissions while improving oil control. Supplied as a set of four.
Mahle OE GM 6.6L Duramax L w/ PCR - .040 DSL Piston With Rings Set (Set of 4)