12-1/4" x 3-1/2" 10K Right Electric Backing Plate Trailer Brake Rockwell Quality (4738-R)

12-1/4 x 3-1/2 10K Right Hand Backing Plate PN: 4738-R Complete Right Hand (Passenger's side) brake assembly ready to bolt on.Shoe size 12-1/4"  x 3-1/2" wideShoes are self adjusting ,you will not have to manually adjust  Fits 10,000 lb axles built by Quality/Rockwell axlesBolts on with 5 bolts Simple 2 wire hook up Replaces Rockwell American 10K 4738-R electric trailer brake Right-hand 12-1/4" x 3-1/2" electric brake assembly Cast backing plate with 5-hole mount Auto adjusting electric brake assembly keeps your brakes adjusted automatically All brake parts are assembled on the backing plate for quick replacement This electric brake assembly is NOT used on Dexter axles. It is found on trailers with imported axles and is hard to find. So far, we know trailers made by Quality Trailer, H and H Trailer, J and J Trailer, and Lippert Trailer have been found to use this brake assembly, and we're sure there are others.