; HomeHeavy Duty Truck PartsDifferentials & Differential PartsRear Rears (Tandem Rear or Single)EatonRD404Rebuilt 1998 Eaton RD404 Rear Rear (Tandem Rear or Single) Rebuilt 1998 Eaton RD404 Rear Rear (Tandem Rear or Single) Unfortunately this part is temporarily unavailable. View other Eaton RD404 Rear Rears (Tandem Rear or Single)