{"product_id":"holley-main-jets-pair-sizes-50-thru-90","title":"Holley Main Jets Pair Sizes 50 thru 99","description":"\u003cul\u003e\n\u003cli\u003eSold as a matched pair for consistent tuning across dual fuel bowls\u003c\/li\u003e\n\u003cli\u003ePrecision Holley main jets available in sizes 50 through 99\u003c\/li\u003e\n\u003cli\u003eSuits Holley 2300, 4150, 4160 and most modular Holley carburettors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese Holley main jets are supplied as a matched pair, ensuring both primary and secondary metering blocks (where fitted) receive identical fuel calibration. Main jets are the core component that determines fuel delivery at cruise and wide-open throttle, making correct sizing essential for drivability, economy and performance. Manufactured to Holley specifications, these jets provide precise fuel flow and maintain consistency across heat cycles and long-term use. Suitable for Holley modular carburettors including 2300 two-barrels, and 4150 and 4160 four-barrel models used on street, strip and marine applications. Available in sizes 50 through 99 to suit both stock and modified engines.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct: Holley Main Jets (Pair)\u003c\/li\u003e\n\u003cli\u003eJet Range: Sizes 50 to 99\u003c\/li\u003e\n\u003cli\u003eJet Type: Main metering jet\u003c\/li\u003e\n\u003cli\u003eCompatible Carburettors:\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003eHolley 2300 series (2 barrel)\u003c\/li\u003e\n\u003cli\u003eHolley 4150 series\u003c\/li\u003e\n\u003cli\u003eHolley 4160 series\u003c\/li\u003e\n\u003cli\u003eMost modular-style Holley carburettors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003eMaterial: Brass\u003c\/li\u003e\n\u003cli\u003eQuantity: 2 jets (matched pair)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInclusions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 x Holley main jets in selected 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