2004 Isuzu 6HK1, Truck Delivery, Engine Assys, Fits to: GMC T7500, (Used) 2003 Isuzu 6HK1, ENGINE ASSEMBLY- Family Number: 3SZXH07.84RA Displacement: 7.8L, Horsepower: 275, Serial Number: 874706, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Horse Power 275, Serial# 874706, Casting# 874706 1GDM7F1374F515309