COMPATIBLE WITH PART NUMBER54415803, 4CA, 4-CA, 19-1684, 19-8113. BSA C15 (1965-), B40 Star, SS90, A50, A65. Triumph T20 Cub, T20C, T20S, T100SS, 6T/TR6 Unit, T120 Unit (-1967) models. also Triumph 3TA, 5TA, 350 and 500 unit twins, Twenty one, Speed Twin.
