5566 x 1 Pair of Halogen Conversion Bulbs. A fantastic Headlight upgrade to 60W/55 Watt  Bulbs with Pre-Focus Contact BPF/P22d Base. This product directly fits into all Classic XK's and a whole range of other classic headlights of the same era, converting to much nearer to the modern road lighting that you are used to. Delivered securely packed in foam with fitting instructions. You could call them a 'plug and play' pair of bulbs. 

DO NOT touch the glass with your fingers as this will cause an overheat spot and they will burn out prematurely. They bulb glass may be cleaned with suitable spirits if contaminated.

NOTE: Halogen bulbs need a good consistent wattage or output diminishes exponentially quicker than standard Tungsten filaments, so ensure your regulator box is adjusted to compensate for a higher draw, or fit a dedicated relay or even better an alternator system.

* Click here for our alternator conversion kits *