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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
ST170031-8
7000-04-1M
Left Offset Intakes
Male -10 ORB to Female -6AN Swivel AdapterBlue Finish
In engine configurations such as V6's and high RPM 4 cylinders
Standard Main Jet #49 HO122-49 Accessory Studs ST170031-8Standard Main Jet #491 4 32" Thread, . 048" Hole Size (Pair) HO122 49 122 49 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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