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Double Billet Universal Joint3/4"DD x 1"-48 Smooth - Spline
12-Point S/SM10 x 1
intermediate and high speed circuits
Threaded Sleeve
Standard Main Jet #97 HO122-97 Product:1/4-32" Thread, .1210" Hole Size (Pair) Double Billet Universal Joint3/4"DD xStandard Main Jet #971 4 32" Thread, . 1210" Hole Size (Pair) HO122 97 122 97 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.
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