Brand-new, fresh-stock, genuine made in UK SU fuel pump for your Aston Martin DB5, DB6, or carburetted DBS. This is the original double-ended pump using the traditional points-type technology that has served so well for so many years. As such, it is not polarity-conscious, and will work on either positive or negative earth vehicles. As either end operates independently, you essentially have two separate pumps with attendant reliability. Nice to carry a spare on those long drives!