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Ultra-Lite II Series Boost Gauge 4905 AU4905 2-1/16"
D11588-R1-8
En abling The Rotation Of An Engi ne With Any 1/2 Drive Tool * Made From Heat-treated 8740 Chrome Moly Steel With He avy-duty Black Oxide Finish
die-cast aluminum and are finished off with a show quality high luster polished finish
particularly in high RPM applications
Standard Main Jet #74 HO122-74 Product:1/4-32" Thread, .0800" Hole Size (Pair) Ultra-Lite II Series Boost GaugeStandard Main Jet #741 4 32" Thread, . 0800" Hole Size (Pair) HO122 74 122 74 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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