Standard Main Jet #99 HO122-99 EFI Disconnect Tool 550 Series Cutter Style One

550 Series Cutter Style One Piece Swivel 30° Stepped Hose End -12AN to -16 HoseBlack Finish

Does your engine seem like it's out of breath

BSBRS035106145N

Blower Manifold StudsSuit PSI Screw Blowers

AF2341-3000

Standard Main Jet #99 HO122-99 EFI Disconnect Tool 550 Series Cutter Style OneStandard Main Jet #991 4 32" Thread, . 1260" Hole Size (Pair) HO122 99 122 99 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.