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Holley Replacement Power Valves

4.84 out of 5 stars 130 Customer Reviews

Holley replacement power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum
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 ga
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.

Results 1 - 16 of 16

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 6.5 in. Hg, with Gasket, Each

Part Number: HLY-125-65

4.83 out of 5 stars ( 29 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 4.5 in. Hg, Gaskets, Each

Part Number: HLY-125-45

4.88 out of 5 stars ( 17 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 3.5 in. Hg, Gaskets, Each

Part Number: HLY-125-35

4.5 out of 5 stars ( 12 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 8.5 in. Hg, with Gasket, Each

Part Number: HLY-125-85

4.87 out of 5 stars ( 15 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 5.5 in. Hg, with Gasket, Each

Part Number: HLY-125-55

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 7.5 in. Hg, with Gasket, Each

Part Number: HLY-125-75

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 2.5 in. Hg, Gaskets, Each

Part Number: HLY-125-25

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 10.5 in. Hg, Gaskets, Each

Part Number: HLY-125-105

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 9.5 in. Hg, with Gasket, Each

Part Number: HLY-125-95

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, High Flow, 4.5 in. Hg, Gaskets, Each

Part Number: HLY-125-145

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, Standard Flow, 5.0 in. Hg, Gaskets, Each

Part Number: HLY-125-50

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, High Flow, 6.5 in. Hg, Gaskets, Each

Part Number: HLY-125-165

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, High Flow, 3.5 in. Hg, Gaskets, Each

Part Number: HLY-125-135

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, High Flow, 2.5 in. Hg, Gaskets, Each

Part Number: HLY-125-125

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Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, High Flow, 5.5 in. Hg, Gaskets, Each

Part Number: HLY-125-155

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

Carburetor Power Valves, Replacement, Single Stage, High Flow, 8.5 in. Hg, Gaskets, Each

Part Number: HLY-125-185

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

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