; HomeHeavy Duty Truck PartsTransmissions & Transmission PartsTransmission AssysEaton/FullerRTO12515Used 1979 Eaton/Fuller RTO12515 Transmission Assy Used 1979 Eaton/Fuller RTO12515 Transmission Assy Unfortunately this part is temporarily unavailable. View other Eaton/Fuller RTO12515 Transmission Assys