Upgrade the stock coolant hoses on your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax with Coolant Hoses & Pipes from XDP. Find factory-style replacements or heavy-duty options to replace the failed components in your cooling system. Check out the upgraded hoses, pipes, and connectors to replace failure prone components on your truck. Get the Coolant Hoses & Pipes your vehicle needs from leading manufacturers like Dayco, Dorman, Mishimoto, and more.