Description
GXP Stainless Exhaust Manifolds & Gaskets For 2003 2007 Ford 6.0L Powerstroke Diesel 2004 5 2005 6 6l lly duramax Silverado 2500 HD (13) HSK66 12637785 12637788 Silverado 2500 HD (13) Features and Benefits Increased Torque Direct Replacement For Stock Manifolds