Holley Standard Main Jet #78 (HO122-78) Ignition Coils & Mounts Application: Standard Duty

Application: Standard Duty

wastegate crack pressure

Suit 0-1850 & 0-80457 With Non Adjustable Needle & Seat

It is common for people to remove this check valve and screw an adaptor fitting straight in the outlet

Hard Anodised Internal Sleeve

Holley Standard Main Jet #78 (HO122-78) Ignition Coils & Mounts Application: Standard DutyHO122 78 HOLLEY MAIN JETS, 2 PACK (78) 1 4 32" Thread, . 0870" Hole Size (Pair) Part Number: HO122 78 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.