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4150 Straight Leg Booster .125 Pilot
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Part Number: 45312 HOLLEY® 4150 BOOSTERS Straight leg heavy duty with .125 pilot hole, (must be sized). Sold individually.$4.51... more info
4150 Throttle Adj Screw for Billet Base
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Part Number:51601-1 Throttle Adjusting Screw for Billet Base, 4150$0.60... more info
4150 Throttle Adjustment Spring
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Part Number:38110 Throttle Adjustment Spring, 4150$0.42... more info.jpg "4412-4779 Throttle bore gauge")
4412-4779 Throttle bore gauge
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78602 Throttle Bore Gauge - This tool should not go into any of the throttle bores. For some instructional material see us here: Click Here$38.00... more info
4412-4779 Venturi gauge check tool
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78601 Venturi Gauge - This gauge will fit around the booster from the top and should not go into the Venturi. This would also be a good time to check...$38.00... more info
4500 BOOSTER STAKE TUBE
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Part Number 141291 These 4500 Booster stake tubes are a great solution to replace or change feed sizes in your Holley® or BLP BX45 Billet...$4.55... more info
4500 HP Annular Booster Banjo
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Part Number: 21890 HP annular straight booster banjo only.$8.35... more info
4500 HP Annular Skirted Booster Banjo
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Part Number: 21891BLP HOLLEY® 4500 BOOSTER BANJOS AND INSERTS HP annular skirted booster banjo only. These banjos are made from Genuine Holley®...$12.35... more info
4500 Series Gasket 2.200
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Part Number: 8053-2.200 CARBURETOR BASE GASKETS 4-Hole, 4500 Series Base Gasket with 2.200 Throttle Bore One of the leading causes of base plates...$3.89... more info
4500 Throttle Adjustment Spring
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Part Number:381559 Throttle Adjustment Spring, 4500$1.38... more info
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