View 7 Photos View 0 Videos 2004 Meritor UD1800 Rear Axle Assembly for a Ud Truck UD1800 Contact for price Complete Rear Axle Assembly ArvinMeritor RS21145NFL1259, 5.57 Ratio, 6 Lug, Hyraulic Brakes, in Good Condition. Call DTI Trucks for More Information and Shipping Quote. ConditionUsedFits To Make(s)UD TRUCKFits To Model(s)UD1800Stock Number68629 MLS Number13229531CategoryAxle Assemblies, Rear Last Updated9/16/2025 LocationWheat Ridge, CO, US Sold ByDTI Truck Parts (833) 614-___ SHOWNUMBERCall Seller Email Seller Save More Info