COMPLETE HEADLIGHT ASSEMBLY FITS: STYLED A WITH CAST IRON DASH UP TO SN: 583999, STYLED B WITH CAST IRON DASH UP TO SN: 200999, G, L, LA, M, MT, 40, EARLY 320 & 420 UP TO SN: 100000. REPLACES: AL2855T & AM3257T. 4-3/4".
NOTE: ALSO WORKS AS A REAR WORK LIGHT FOR M, MC, MT & 320, REPLACES: AT10571T.