2001 Allison 1000 SERIES, TRUCK DELIVERY, Transmission Assys, Fits to: Freightliner MT55 Chassis, (Used) 2001 Allison ( AT ), TRANSMISSION ASSEMBLY- Model: 1000, Serial Number: 26699, Part Number: 29538969, 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 21921, Serial# 26699, Casting# 26699, Truck Year 2001 4UZAA5BW21CJ04548