1999 Allison MT643, Jockey , Transmission Assys, Fits to: Capacity Other, ( Used ) 1999 Allison (AT) TRANSMISSION ASSEMBLY- Model: MT643, Serial Number: 2430570534, Part Number: 23042897, 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# 2430570534, Casting# 2430570534, Truck Year 1999 53591199