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Holley 12555 Single Stage Power Valve 12555_100
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- SKU:
- 19486558
- MPN:
- 12555_100
- Availability:
- Usually ships the same or next business day. In stock at our GA, KS, PA, TX warehouses.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 02/22/2026 01:45:30 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 | and pay only $25.20 each 25.2 |
| Buy 3 | and pay only $23.11 each 23.11 |
| Buy 4 | and pay only $22.32 each 22.32 |
| Buy 5 - 7 | and pay only $21.85 each 21.85 |
| Buy 8 or above | and pay only $20.16 each 20.16 |
- Stock Update:
- 02/22/2026 01:45:30 AM PST
Description
This item is brand-new, factory sealed.
Holley 125-55 Single-Stage Standard Flow Power Valve- Enhances power enrichment
- Eliminates hesitation and bogging for better performance
- Includes gasket for easy installation
- Valve opens when vacuum reaches 5.5 Hg
- 90-day warranty
- Manufacturer: Holley
- Brand: Holley
- Model: Holley Single-Stage Power Valve
- Item Weight: 0.8 ounces
- Country of Origin: USA
- Item model number: 125-55
- Is Discontinued By Manufacturer: No
- Exterior: Machined
- Manufacturer Part Number: 12555
- OEM Part Number: 125-55
This single-stage standard flow power valve boosts your vehicle's power when pulling heavy loads or at fast speeds. By enhancing the carburetor's response to vacuum forces, the power valve allows an optimal amount of fuel through the carburetor for increased torque and higher speeds. The power valve will open when the engine reaches a vacuum of 5.5 Hg. It has a 90-day warranty for defects in material and workmanship.
Warranty Information
All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Holley 12555 Single Stage Power Valve 12555_100
$29.85