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Power Valves

Power Valves enrich the fuel mixture during heavy load or acceleration by bypassing main jets. Tuning these correctly helps eliminate flat spots and improves part-throttle responsiveness on modified engines.

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Holley Single-Stage Power Valve STD Flow 10.5" Hg, Including Gasket (HO125-105)
Holley Single-Stage Power Valve STD Flow 10.5" Hg, Including Gasket (HO125-105) HO125-105 Contact for availability
$64.60 - $64.60
$64.60
$64.60 - $64.60
$64.60
+ GST

Holley Single-Stage Power Valve STD Flow 10.5" Hg, Including Gasket (HO125-105)

STD FLOW POWER VALVE; 10.5HGPart Number: HO125-105 Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. ...

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$64.60 - $64.60
$64.60
$64.60 - $64.60
$64.60
+ GST
Contact for availability
Holley Power Valve Check Ball Kit (HO125-500)
Holley Power Valve Check Ball Kit (HO125-500) Contact for availability
$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00
+ GST

Holley Power Valve Check Ball Kit (HO125-500)

POWER VALVE CHECK BALL KITPart Number: HO125-500 Power valve "blowout" protection can now be added to pre '92 model 2300, 4150 and 4160 carburetto...

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$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00
+ GST
Contact for availability
Holley Single-Stage Power Valve STD Flow 3.5" Hg, Including Gasket (HO125-35)
Holley Single-Stage Power Valve STD Flow 3.5" Hg, Including Gasket (HO125-35) HO125-35 Contact for availability
$37.20 - $37.20
$37.20
$37.20 - $37.20
$37.20
+ GST

Holley Single-Stage Power Valve STD Flow 3.5" Hg, Including Gasket (HO125-35)

STD FLOW POWER VALVE; 3.5HGPart Number: HO125-35 Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Ho...

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$37.20 - $37.20
$37.20
$37.20 - $37.20
$37.20
+ GST
Contact for availability
Holley Single-Stage Power Valve High Flow 10.5" Hg, Including Gasket (HO125-1005)
Holley Single-Stage Power Valve High Flow 10.5" Hg, Including Gasket (HO125-1005) Contact for availability
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
+ GST

Holley Single-Stage Power Valve High Flow 10.5" Hg, Including Gasket (HO125-1005)

HI FLOW POWER VALVE; 10.5HGPart Number: HO125-1005 Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. ...

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$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
+ GST
Contact for availability
Holley Single-Stage Power Valve High Flow 8.5" Hg, Including Gasket (HO125-185)
Holley Single-Stage Power Valve High Flow 8.5" Hg, Including Gasket (HO125-185) HO125-185
Contact for availability
$64.60 - $64.60
$64.60
$64.60 - $64.60
$64.60
+ GST

Holley Single-Stage Power Valve High Flow 8.5" Hg, Including Gasket (HO125-185)

HI FLOW POWER VALVE; 8.5HGPart Number: HO125-185 Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Ho...

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$64.60 - $64.60
$64.60
$64.60 - $64.60
$64.60
+ GST
Contact for availability
Holley Single-Stage Power Valve High Flow 3.5" Hg, Including Gasket (HO125-135)
Holley Single-Stage Power Valve High Flow 3.5" Hg, Including Gasket (HO125-135) HO125-135
Contact for availability
$64.00 - $64.00
$64.00
$64.00 - $64.00
$64.00
+ GST

Holley Single-Stage Power Valve High Flow 3.5" Hg, Including Gasket (HO125-135)

HI FLOW POWER VALVE; 3.5HGPart Number: HO125-135 Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Ho...

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$64.00 - $64.00
$64.00
$64.00 - $64.00
$64.00
+ GST
Contact for availability
Holley Single-Stage Power Valve High Flow 2.5" Hg, Including Gasket (HO125-125)
Holley Single-Stage Power Valve High Flow 2.5" Hg, Including Gasket (HO125-125) HO125-125
Contact for availability
$67.50 - $67.50
$67.50
$67.50 - $67.50
$67.50
+ GST

Holley Single-Stage Power Valve High Flow 2.5" Hg, Including Gasket (HO125-125)

HI FLOW POWER VALVE; 2.5HGPart Number: HO125-125 Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Ho...

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$67.50 - $67.50
$67.50
$67.50 - $67.50
$67.50
+ GST
Contact for availability