Holley Power Valve 4.5" STD Flow #125-45 BLAS-S4 Includes wire retainer as well

Includes wire retainer as well

Hub Finish: Natural

Unit contains sensitive voltage limiting devices—Test @ 250V only

* Accurate

0mm Working Length: 100mm Total Length: 160mm Made in Germany

Holley Power Valve 4.5" STD Flow #125-45 BLAS-S4 Includes wire retainer as wellThese power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel is supplied to the main system during heavy load or under full power situations to eliminate hesitation and bogging ensuring the smooth delivery of power without any drivability concerns. They're available in many different