Find the belts, pulleys, tensioners, and other Belt & Accessory Drive components your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax needs. Find OE-style serpentine belts to replace the worn out, cracked or frayed belt on your vehicle. Tensioners and pulleys keep the serpentine belt on your vehicle in position and ensure the proper operation of belt-driven components. Expand the life of your diesel engine and reduce chatter from torsional vibrations with the performance dampers available from Fluidampr. Belt & Accessory Drive components are available from leading brands like Dayco and Dorman, as well as products from Interstate-Mcbee for HD applications.