Metering needle
Product number:
244133
spring loaded type - marked: B1AR
Product Information "Metering needle"
Jaguar: XJ6 4.2 Series I with Zenith Stromberg 175CD carburettors from engine no. 7L10077 to 7L42594 (1970-72)
spring loaded type - marked: B1AR
Biased (or spring loaded) metering needles don't require time consuming adjustments to centre the needle in the jet each time they are fitted both during production and during maintenance. To some extent they self centring and all you have to do is fit them so the shoulder is flush with the bottom of the piston in the dashpot.
Please note: the needle choice will depend on range of engine modifications.