4 DOOR POWER VALVE HIGH FLOW uses 4 openings instead of the standard 2 openings in Holley carburettors. This design allows a faster more efficient flow of fuel into the power enrichment circuit.
• Hi Flo 4 Door power valve for Holley performance carburettors
• 8.5 vacuum rating
• Hi-flow FOUR DOOR™ exclusive QFT design
• Restores correct power enrichment under load and wide-open throttle