2001 Allison 1000 SERIES, Truck Delivery, Transmission Assys, Fits to: Freightliner MT55 Chassis, (Used) 2000 Allison (AT), TRANSMISSION ASSEMBLY- ( REMANUFACTURED WELLER ) Model: 1000, Serial Number: 1296252, Part Number: E004506, Engine: Cummins ISB, 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# 1296252, Casting# 1296252, Truck Year 2001 4UZAA5BW21CJ04713