Description

Precise fuel delivery is the foundation of consistent carburetor performance, and the Holley Power Valve 125-25 is engineered to optimize your fuel mixture across the entire RPM range. This single-stage valve responds to engine vacuum conditions, leaning out the fuel charge during cruise and enriching it under load—delivering better throttle response and improved fuel efficiency without sacrificing power when you need it. If you’re running a Holley carburetor and want predictable, tuned performance, this is the valve your engine is asking for.