Lucas British Pre-Focus (BPF) Incandescent Headlight Bulbs (1) - Choose 6V / 12V Set OEM part number is 54415803

OEM part number is 54415803

Etc) from 1969-1970

For years the British motorcycle industry has been plagued with very low quality valve springs

Fits Triumph & BSA Oil In Frame Twins (Bonneville

Lucas British Pre-Focus (BPF) Incandescent Headlight Bulbs (1) - Choose 6V / 12V Set OEM part number is 54415803The trademarks "Lucas" and the Diagonal Device are owned by Lucas Industries Limited New Genuine Lucas Pre Focus Incandescent Headlamp Bulbs. These bulbs are the original "British Pre Focus" bulbs as fitted to many vintage British motorcycles. Base measures approx 22mm and the flange measures 36mm with the correct cut out. In this listing we stock both 6V and 12V bulbs (non polarity sensitive). Fits a wide range of vintage British motorcycle models.