Carburetor Power Valves and Components
Circle Track Race Car Carburetor Power Valves & Components at JJ Motorsports
Fine-tune your circle track race car's part-throttle and wide-open performance with premium Holley power valves and block-off plugs from JJ Motorsports. These high-quality components deliver precise vacuum-controlled enrichment, preventing lean spots and hesitation in high-RPM racing conditions. Available in popular 5.5" Hg and 6.5" Hg openings, plus block-off kits for full-race applications, they’re essential for dirt track, oval, and stock car setups running Holley 4150/4160 carbs.
Shop Holley power valves for race-proven reliability. Whether you're dialing in a short-track modified or a high-bank superspeedway late model, these valves pair perfectly with our jets & air bleeds or explore rebuild kits to keep your carb dialed all season.
Top Circle Track Carburetor Power Valves & Components
- Power Valve HLY125-55 – 5.5" Hg opening power valve; ideal for most circle track gas carbs with moderate vacuum.
- Power Valve HLY125-65 – 6.5" Hg opening power valve; popular choice for higher-vacuum street stock and IMCA engines.
- Power Valve Block-Off MRG1510 – Billet block-off plug with gasket; seals power valve circuit for full-race, no-enrichment setups.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Holley Power Valve 125-55
HOLLEY
$16.00Power Valve Power ValveStandard FlowSingle Stage5.5 in VacuumGasketEachHLY125-55- SKU:
- HLY125-55
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-55
$16.00 -
Mr. Gasket Hly Pwr Vlv Block-Off 1510
MR. GASKET
$16.63Hly Pwr Vlv Block-Off Power Valve PlugGasketAluminumGold AnodizedHolley CarburetorsEachMRG1510- SKU:
- MRG1510
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MFG Part #:
- 1510
$16.63 -
Holley Power Valve Plug 26-36
HOLLEY
$9.12Power Valve Plug Power Valve Plug1/2-28 in Threaded PlugGasket IncludedAluminumNaturalHolley 2300 / 4150 / 4160 / 4500 CarburetorsEachHLY26-36- SKU:
- HLY26-36
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 26-36
$9.12 -
Holley Power Valve 125-95
HOLLEY
$17.64Power Valve Power ValveStandard FlowSingle Stage9.5 in VacuumGasketEachHLY125-95- SKU:
- HLY125-95
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-95
$17.64 -
Holley Power Valve 125-85
HOLLEY
$17.78Power Valve Power ValveStandard FlowSingle Stage8.5 in VacuumGasketEachHLY125-85- SKU:
- HLY125-85
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-85
$17.78 -
Holley Power Valve 125-75
HOLLEY
$15.71Power Valve Power ValveStandard FlowSingle Stage7.5 in VacuumGasketEachHLY125-75- SKU:
- HLY125-75
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-75
$15.71 -
Holley Power Valve 125-65
HOLLEY
$14.29Power Valve Power ValveStandard FlowSingle Stage6.5 in VacuumGasketEachHLY125-65- SKU:
- HLY125-65
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-65
$14.29 -
Holley Power Valve Check Ball Kit 125-500
HOLLEY
$28.61Power Valve Check Ball KitPower Valve SaverCheck BallDrill BitSteelNaturalHolley 2300 / 4150 / 4160 CarburetorsKitHLY125-500- SKU:
- HLY125-500
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MFG Part #:
- 125-500
$28.61 -
Holley Power Valve 125-50
HOLLEY
$19.60Power Valve Power ValveStandard FlowSingle Stage5.0 in VacuumGasketEachHLY125-50- SKU:
- HLY125-50
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-50
$19.60 -
Holley Power Valve 125-45
HOLLEY
$14.95Power Valve Power ValveStandard FlowSingle Stage4.5 in VacuumGasketEachHLY125-45- SKU:
- HLY125-45
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-45
$14.95 -
Holley Power Valve 125-35
HOLLEY
$14.95Power Valve Power ValveStandard FlowSingle Stage3.5 in VacuumGasketEachHLY125-35- SKU:
- HLY125-35
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-35
$14.95 -
Holley Power Valve 125-25
HOLLEY
$16.00Power Valve Power ValveStandard FlowSingle Stage2.5 in VacuumGasketEachHLY125-25- SKU:
- HLY125-25
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-25
$16.00 -
Holley Power Valve 125-185
HOLLEY
$31.18Power Valve Power ValveHigh FlowSingle Stage8.5 in VacuumGasketEachHLY125-185- SKU:
- HLY125-185
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-185
$31.18 -
Holley Power Valve 125-165
HOLLEY
$28.61Power Valve Power ValveHigh FlowSingle Stage6.5 in VacuumGasketEachHLY125-165- SKU:
- HLY125-165
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 125-165
$28.61 -
Holley Power Valve 125-155
HOLLEY
$31.18Power Valve Power ValveHigh FlowSingle Stage5.5 in VacuumGasketEachHLY125-155- SKU:
- HLY125-155
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-155
$31.18 -
Holley Power Valve 125-145
HOLLEY
$31.79Power Valve Power ValveHigh FlowSingle Stage4.5 in VacuumGasketEachHLY125-145- SKU:
- HLY125-145
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-145
$31.79 -
Holley Power Valve 125-135
HOLLEY
$31.18Power Valve Power ValveHigh FlowSingle Stage3.5 in VacuumGasketEachHLY125-135- SKU:
- HLY125-135
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-135
$31.18 -
Holley Power Valve 125-105
HOLLEY
$17.78Power Valve Power ValveStandard FlowSingle Stage10.5 in VacuumGasketEachHLY125-105- SKU:
- HLY125-105
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 125-105
$17.78 -
AED Power Valve Block-Off Plug 5086
ADVANCED ENGINE DESIGN
$5.72Power Valve Block-Off PlugPower Valve PlugGasketAluminumGold AnodizedHolley / Quick Fuel CarburetorsEachAED5086- SKU:
- AED5086
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 5086
$5.72 -
AED 8.5 Power Valve 5085
ADVANCED ENGINE DESIGN
$9.998.5 Power Valve Power ValveFour DoorSingle Stage8.5 in VacuumGasketEachAED5085- SKU:
- AED5085
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 5085
$9.99
