View 0 Photos View 0 Videos 2004 GMC 6.6L DURAMAX Engine for a GMC C5500 Price Drop $2,500 USD (USED) GM 6.6L DURAMAX Warranty: As-Is No Warranty Assembly#: - Serial#: - Horsepower: 300 ConditionUsedAssembly Number-Fits To Make(s)GMCFits To Model(s)C5500Stock Number25927790 MLS Number14164074CategoryEngines Last Updated8/14/2026 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info