Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Edelbrock single‑stage 4.5 in Hg power valve is a vacuum‑sensed service part that opens during heavier load to add fuel to the main system and prevent bogging or hesitation. Its higher 4.5 in Hg opening point suits applications with lower manifold vacuum at idle or cruising. Fit the valve appropriate to your carburetor and engine to achieve desired mid‑to‑high load enrichment characteristics.
Edelbrock Single-Stage Power Valve Standard Flow 4 5 In Hg
