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Holley replacement power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel is supplied to the main system during heavy load or under full power situations to eliminate hesitation and bogging--ensuring the smooth delivery of power without any drivability concerns. They're available in many different vacuum ranges to time the system's operation to your specific requirements, and they come in your choice of single-stage, two-stage, and high-flow designs. A gasket is included.
( 131 )
$15.88
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$19.60
$14.29
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$17.64
On Sale
Holley carburetor accelerator pump check valves are made to fit most Holleys using a 30cc or 50cc accelerator pump. They feature the "umbrella" design most commonly used in performance-style carburetors.
( 10 )
$18.99
$17.09
On Sale
These Quick Fuel FOUR DOOR power valves feature an exclusive in-house design that has become the preference of professional race teams in virtually every circuit where carburetors are used. They have a greater flow capacity, a quicker response rate, and tighter limit bands that allow engine builders to precisely tune the power enrichment phase of their calibration. All Quick Fuel FOUR DOOR power valves are hand-tested and set to the stamped value. Their thicker molded diaphragm adds increased protection against backfire-induced rupture.
( 51 )
$13.97
$12.57
On Sale
Summit Bucks
Boost Products USA silicone hump couplers are reinforced with textile layers to be extreme pressure resistant, and also to vacuum in your Air Charge System. Suitable for connections to intercooler pipes and lines, and water lines, the silicone hump couplers can withstand up to 5 Bar and temperatures up to 220 degrees C (not to be used as fuel or oil line). These quality hose couplers are designed with a hump in the middle, which allows the connector to bend or to stretch. This results in a bendable flexibility, which is highly recommended for throttle valves or intercoolers connected to the vehicles body, and similar connections. The silicone is durable and flexible, stable, and color-proof after many years. Matter of fact, lots of well-known companies in the tuning and motorsport areas rely on these quality silicone hump couplers by Boost Products.
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$15.69
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$22.03
$14.12
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$19.83
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