2003 Allison 1000 SERIES, Truck Delivery, Transmission Assys, Fits to: GMC C4500, (Used) 2002 Allison (AT), TRANSMISSION ASSEMBLY- Model: 1000Series, Serial Number: 6310229197, Part Number: E004519, Engine: Isuzu 8GF1XN, Reference images for condition For more information about this item, give us a call. We ship worldwide! ( CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Serial# 6310229197, Casting# 6310229197, Truck Year 2003 1GDE4E1173F505397