4 0 Allison 4500RDS Transmission Control Module (TCM) for a 2021 International HX620 Contact for price Allison 4500RDS Transmission Control Module (TCM) For Sale P/N 29556882 - Used - May have some cosmetic blemishes (see photos). Give us a shout by phone, email, or text. We ship everywhere,... ConditionUsedEngine ModelCummins X15Fits To Make(s)InternationalFits To Model(s)HX620Will Fit Year(s)2021Part Number29556882Stock NumberIN-0839-45 MLS Number13251954CategoryTransmission Control Modules (TCM) Last Updated6/3/2025 LocationYork, ON, Canada Sold ByLomoca Inc. (833) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info