2001 Allison 1000 SERIES, Truck Delivery, Transmission Assys, Fits to: Freightliner MT55 Chassis, (Used) 2001 Allison ( AT ), TRANSMISSION ASSEMBLY- Model: 1000, Serial Number: 6310106143, Part Number: E004506, Engine: Cummins ISB, Reference for 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 219, Serial# 6310106143, Casting# 6310106143, Truck Year 2001 4UZAA5BW91CH98044