Description
Holley Single-Stage Power Valve (5.0″ Hg Vacuum)
Precision fuel enrichment valve engineered for Holley performance carburetors operating under high load conditions.
Product Overview
The Holley 125-50 Single-Stage Power Valve plays a critical role in the power enrichment circuit of Holley performance carburetors. Calibrated to open at 5.0″ Hg manifold vacuum, this standard-flow power valve ensures a smooth and immediate transition of fuel enrichment when engine vacuum drops during acceleration or wide-open throttle (WOT).
Constructed with high-grade internal diaphragms and durable brass bodies, this unit provides precise metering and reliable fuel delivery for both road track and drag racing applications. Each unit is supplied complete with a fresh sealing washer for leak-free installation into the metering block.
Key Features
- ☑ Calibrated 5.0″ Hg opening vacuum rating
- ☑ Standard-flow single-stage design
- ☑ Premium diaphragm construction for extended fuel resistance
- ☑ Direct replacement for Holley 2300, 4150, and 4160 series carburetors
- ☑ Includes power valve sealing gasket
Technical Specifications
| Brand | Holley |
|---|---|
| Part Number | 125-50 |
| Product Type | Carburetor Power Valve |
| Flow Type | Standard Flow |
| Stage | Single Stage |
| Opening Vacuum | 5.0 in. Hg |
| Thread Diameter | 1/2″-28 |
| Gasket Included | Yes |
What’s Included in the Box
- 1 x Holley 125-50 5.0″ Hg Single-Stage Power Valve
- 1 x Metering Block Power Valve Sealing Gasket
As a premier UK supplier of genuine Holley fuel system components, JP Racing provides fast dispatch and specialist technical guidance to keep your vehicle performing at its peak.
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