View 12 Photos View 0 Videos Allison 2000RN Transmission for a 2006 Blue Bird BB Conventional Newly Listed Contact for price (Used) 2005 Allison (AT), TRANSMISSION ASSEMBLY- REMANUFACTURED!! Model: 2000 RETRAN, Serial : 9730018702, Part Number: 29544742, Engine: Caterpillar C7, Reference images for... ConditionUsedEngine ModelCaterpillar C7Fits To Make(s)Blue BirdFits To Model(s)BB ConventionalWill Fit Year(s)2006Part Number29544742Stock NumberP-503383 MLS Number14426381CategoryTransmissions Last Updated6/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info