Upgrade the fuel system on your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax with Lift Pumps & Accessories. Lift Pump Accessories include everything you need to keep your lift pump functioning properly. When you upgrade the lift pump on your diesel, you provide your engine with greater fuel flow which results in improved performance. Shop for Lift Pumps & Accessories from FASS, AirDog, AFE, and other industry leading manufacturers at XDP.