Compares with parts numbered by Lucas as 400052, 405469 and Remax ES223. Ariel Square Four 1949/58, Enfield all models 1949/50, Twin 1951/54, Sunbeam Twin 1946/50, S7 and S8 1951/57, Triumph 498cc 5 Tac 1953/54, 649 cc 6 Tac 1953/54, 500cc Speed twin 1955/57, 650 cc Thunderbird 1955/57.
