Fit for Duramax Engine:LLY,LBZ,LMM 6.6L. Fit for 2006-2010 Chevrolet GMC Duramax 6.6l LLY LBZ & LMM Trucks with the 5 or 6 speed Allison automatic transmission. Cooler Transmission Temperatures. 2010 Chevrolet Silverado 2500 HD LT Crew Cab Pickup 4-Door 6.6L 6599CC 403Cu.
