View 2 Photos View 0 Videos Allison MT653RM Transmission for a 1990 GMC C7000 Topkick Contact for price (Used) 1989 Allison (AT), TRANSMISSION ASSEMBLY- REMANUFACTURED !!! Model: MT653RM, Serial Number: 9208070785, Part Number: 29518015, Engine: Caterpillar 3116, Reference images for... ConditionUsedEngine ModelCaterpillar 3116Fits To Make(s)GMCFits To Model(s)C7000 TopkickWill Fit Year(s)1990Part Number29518015Stock NumberP-81554 MLS Number12913484CategoryTransmissions Last Updated2/12/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info