Holley Single Stage 50 Power Valve - Standard Flow

Single Stage Power Valves - Standard Flow #HLY125-10 - Opening Vacuum 1. 0" Hg / #HLY125-25 - Opening Vacuum 2. 5" Hg / #HLY125-35 - Opening Vacuum 3. 5" Hg / #HLY125-45 - Opening Vacuum 4. 5" Hg / #HLY125-50 - Opening Vacuum 5. 0" Hg / #HLY125-65 - Opening Vacuum 6. 5" Hg / #HLY125-75 - Opening Vacuum 7. 5" Hg / #HLY125-85 - Opening Vacuum 8. 5" Hg / #HLY125-95 - Opening Vacuum 9. 5" Hg / #HLY125-105 - Opening Vacuum 10. 5" Hg

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!