General Purpose Spigot Barb Nipple (Vacuum barb for insulator) – suits all engines with plastic insulator between carb and head

Brand New general purpose barb suitable for tapping vacuum from insulator.

4mm diameter shank, 5.25mm diameter barb, length = 22.5mm

Drill a 4mm hole in the top of your insulator between the carb and the head/manifold and glue this barb in place using epoxy to create your own vacuum insulator just like our popular EVPC02 Vacuum Manifold Sandwich Insulator for External Fuel Pump GX160/200