Replaces OEM #57GC259. IMPORTANT: Please call toll-free 1-800-282-9319 to order. Please have the following information available when ordering: Truck Model, Last 6 Digits of Truck Serial Number, and Engine Assembly Number. The Engine Assembly Number will be located on the engine tag on the front valve cover of the engine and will start with 11GBA. KIT,Turbocharger Retrofit Includes Hoses (1)ECH-8675 (1)804215 Clamps (2)ECL-1962 Screws (4)ESC-0012 Washers (4)FWA-0050 O-Ring (1)EGA-3877 Gasket (1)EGS-2862 Tubes (1)EFI-1799 (1)EFI-1748.