Holley Power Valve 4.5" STD Flow #125-45 Product Type_Woodruff Drill diameter 22

Drill diameter 22

This precision boring head is the perfect tool for boring out very accurate holes on a vertical mill or a lathe

Flute length 124mm

• 80° cutting edge angle

Holley Power Valve 4.5" STD Flow #125-45 Product Type_Woodruff Drill diameter 22These 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