View 2 Photos View 0 Videos Meritor-Rockwell RS21-145 Rear Axle Assembly for a 1991 Ford F800 Contact for price Meritor Rockwell RS21-145 Single Rear Differential Assembly For Sale 5.29 Ratio - Capacity: 20,000 lbs. - Used - May have some cosmetic blemishes (see photos). Give us a shout by phone,... ConditionUsedRear End5.29 ratioFits To Make(s)FordFits To Model(s)F800Will Fit Year(s)1991Stock NumberFD-0391-10 MLS Number9988692CategoryAxle Assemblies, Rear Last Updated5/14/2026 LocationYork, ON, Canada Sold ByLomoca Inc. (833) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info