Holley Standard Main Jet #50 (HO122-50) iat for years of dependable service

for years of dependable service

We also use all the mounting points on the head for extra security

Suitable for cars running aftermarket intercooler pipes as the mounting tabs have been deleted

Laser engraved 360° timing marks

Holley Standard Main Jet #50 (HO122-50) iat for years of dependable serviceHO122 50 HOLLEY MAIN JETS, 2 PACK (50) 1 4 32" Thread, . 049" Hole Size (Pair) Part Number: HO122 50 These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimetres per minute" and are changeable for tuning purposes. The shape of the entry, exit, and size determines flow. All Holley Main Jets are flow tested and then stamped with the correct number.