The 410 globe-type incandescent bulb was original equipment on various Norton and Triumph models and is used in glass reflector units with the P45 base.
The genuine Lucas 45/40 dual filament bulb features a three-pronged base that is plugged into an integrated socket.
The 45 watt high beam and 40 watt dip beam is switched through the handlebar console switch.
The bulb is retained by a special clip on the back of the headlamp glass light unit. The socket is plugged onto the three-prong base of the bulb.
Please note: Due the nature of the product, we unfortunately do not accept returns on bearings, service tools or electrical components. Please be confident about your purchase before ordering. If you have questions, please contact us.