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HOLLEY 2.5 Power Valve

HOLLEY 2.5 Power Valve

£23.45 Inc. VAT

SKU: HOL125-25 Categories: , , Brand:

Description

Part Number: 125-25

Holley Single-Stage Power Valve (2.5 in. Hg)

Standard flow carburetor power valve engineered to deliver accurate fuel enrichment under high-vacuum engine demands.

Key Features

  • ☑ Precision calibrated to open at 2.5 in. Hg engine vacuum
  • ☑ Single-stage standard flow design for consistent fuel metering
  • ☑ Protects against lean mixture conditions during acceleration
  • ☑ Includes high-quality sealing gasket for leak-free installation
  • ☑ Direct replacement component for Holley performance carburetors

Technical Specifications

Brand Holley
MPN 125-25
Product Type Carburetor Power Valve
Stage Single-Stage
Flow Type Standard Flow
Opening Vacuum Rating 2.5 in. Hg
Gasket Included Yes

What’s Included in the Box

  • 1x Holley 125-25 Single-Stage Power Valve (2.5 in. Hg)
  • 1x Power Valve Sealing Gasket

Manufactured to Holley’s strict performance standards, the 125-25 power valve ensures smooth throttle response and optimal enrichment circuit operation. Available with fast UK shipping and technical support from JP Racing.

Frequently Asked Questions

The Holley 125-25 power valve is calibrated to open at 2.5 in. Hg of manifold vacuum, initiating fuel enrichment when engine load causes vacuum levels to drop to or below this threshold.

Yes, the Holley 125-25 power valve comes supplied complete with a dedicated sealing gasket to ensure a reliable seal inside the carburetor metering block.

A 2.5 in. Hg power valve is typically specified for high-performance or race engines running aggressive long-duration camshafts that pull relatively low manifold vacuum (around 5.0 to 6.0 in. Hg) at idle.

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