Genuine Lucas 5-3/4" Headlamp Beam Unit with Pilot Aperture
O.E.M: LU54524526 / 99-1041 / 54520452 / 54525272 / 516828
 
Note:
 
Lucas BPF bulbs available as WW13011L (6V) and WW13017L (12V)
Lucas LED BPF bulbs available as WW13090 (6-24V) and WW13090HP (6-24V)

Lucas pilot light bulbs available as:
Lucas 12V pilot bulbs - WW13033L, Lucas LED 12V pilot bulbs - WW13094
Lucas 6V pilot bulbs - WW13036L, Lucas LED 6V pilot bulbs - WW13093
Replacement pilot bulb holders available as WW13121
Replacement Lucas BPF main bulb holders available as WW13120L

This product also replaces Lucas 54520452, 54525272 and 516828
Original Triumph,BSA part numbers include : 99-1041, 99-0688, 99-1088, 19-0738