View 6 Photos View 0 Videos Meritor-Rockwell RT40-145 Rear Axle Assembly for a 2006 Freightliner Columbia 112 Contact for price (Used) 2006 Freightliner Columbia 112, COMPLETE REAR REAR TANDEM- Part Number: S11-18480-373, Serial Number: AVA05117277, Make: Meritor, Model: RT40-145, Ratio: 3.73, Capacity: 20,000 Lbs,... ConditionUsedRear End3.73 ratioFits To Make(s)FreightlinerFits To Model(s)Columbia 112Will Fit Year(s)2006Part NumberS11-18480-373Stock NumberP-502036 MLS Number14308089CategoryAxle Assemblies, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info