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The Edelbrock single‑stage 5.5 in Hg power valve is a vacuum‑operated fuel enrichment device that opens under heavier load to supply additional fuel to the main circuit, reducing hesitation and bog during acceleration. Its 5.5 in Hg rating provides a relatively high opening threshold suitable for low‑vacuum or performance applications. Choose the valve that matches your engine vacuum profile for correct enrichment behavior.
Edelbrock Single-Stage Power Valve Standard Flow 5 5 In Hg
