Cheers fred & frank .Yes frank that would seem to be the right size,as the s/steel bit measures 13mm + seal would bring it to 14mm. Fred I have a CGA rail for top feed injectors. Might fiddle with some pipe or Frank what Volvo model & year did you get yours from ? (240,T5,760,850 etc.)Found a place that has some Volvo bits. Not as common over here.Thinking of 195-250cc.