2001 Allison 1000 SERIES, TRUCK DELIVERY, Transmission Assys, Fits to: Freightliner MT55 Chassis, (Used) 2001 Allison, TRANSMISSION ASSEMBLY- Model: 1000 SERIES, Serial Number: 6310070003, Engine: Cummins ISB, 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# 6310070003, Casting# 6310070003, Truck Year 2001 4UZAA5BW81CJ04554