The Edelbrock #12625 Single Stage 2.5 Hg Power Valve operates by using engine vacuum to control the opening and closing rate. During heavy load or under full power situations, they open to supply additional fuel to the main system to eliminate hesitation
Product Features:- Gasket Or Seal Included
- 2.5 in. Hg Opening Vacuum
- Single Stage
- Standard Flow Type
- Made In The USA