Standard Main Jet #63 HO122-63 Product:1/4-32" Thread, .062" Hole Size (Pair) Shock Pin Kit Threaded 8pc

Shock Pin Kit Threaded 8pc Set Material: 4130 Chromoly Finish: Black Zinc Sold As: 8pc set includes (2) HRP8420-4130

AN Flare to Barb Adapter -6AN to 3/8"Black Finish

11/16" Socket (2-Pack)

Gloss Blue Silicone Hump Hose 2-3/4" (70mm) I

AF4250-5414M

Standard Main Jet #63 HO122-63 Product:1/4-32" Thread, .062" Hole Size (Pair) Shock Pin Kit Threaded 8pcStandard Main Jet #631 4 32" Thread, . 062" Hole Size (Pair) HO122 63 122 63 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.