PACK A1 45D4 Non Ballast For B Series EngineThis pack is suitable for all B Series engines with a non ballast ignition. It includes a Lucas 45D type distributor, which can replace your existing 45D unit or any earlier 25D model. Comes with HT leads in a choice of colours Comes with a choice of spark plugs Choose between our Classic 3 ground plugs or our Iridium plugs Cold, standard or hot plugs Cold for performasnce Standard for standard use Hot for short journeys of tiered engines