Fits Delco starter numbers 1107021, 1107060, 1107067, 1107093, 1107174, 1107427, 1107448, 1108096. Farmall A, B, C, H, M, Super A, Super C, Super H to serial number 19233, Super M up to serial number 28174 or Lousville-built tractors, up to serial number 504801; also fits W-4, W-6, 100, 130 and 140 up to serial number 26800, 200, 230 and 240 with two-bolt nose.cone.