Get a replacement or upgraded Oil Pan for your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax. Upgraded Oil Pans are offer a variety of changes such as a cast design with increased oil capacity, built-in cooling fins, O-ring gaskets, and many more upgrades that make them superior to a factory pan. You can also find factory replacement Oil Pans for many applications that provide you with a direct-fit design that maintains the function of the factory pan. When replacing your rusted or leaking oil pan, be sure to purchase one from manufacturers such as XDP, Interstate-McBee, Dorman, PPE, and others.