Holley Standard Main Jet #101 (HO122-101) Mazda BT50 650 HP N/A

650 HP N/A

Simply download a base map and you're on your way

or anyone wanting the unmatched timing accuracy and spark energy this system offers

Programm able Target Air Fuel Ratios per Boost level

Holley Standard Main Jet #101 (HO122-101) Mazda BT50 650 HP N/AHO122 101 HOLLEY MAIN JET #101 . 126 1 4 32" Thread, . 126" Hole Size (Pair) Part Number: HO122 101 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.