Description
Edelbrock Single Stage Power ValveStandard Flow 4.5 in. HgThe Edelbrock #12645 Single Stage 4.5 Hg Power Valve operates by using engine vacuum to control the opening and closing rate. During heavy load or under full power situationsthey open to supply additional fuel to the main system to eliminate hesitation and boggingensuring the smooth delivery of power without any drivability concerns.





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