Pay in 4 interest-free payments of $8.31 Learn more
Ships within 48 hours · Estimated delivery Oct 9 - Oct 14
258 lb/in Spring Rate
1999-2017 Ford F-350 Super Duty
You can also paint them to match or accent the body color for a factory-custom look
Do not use rotator type valve springs or retainers for this application
1977-1977 Ford F-250
Holley Single Stage 185 Power Valve - High Flow Control Arm Shims 258 lb/in Spring RateSingle Stage Power Valves High Flow #HLY125 125 Opening Vacuum 2. 5" Hg #HLY125 135 Opening Vacuum 3. 5" Hg #HLY125 145 Opening Vacuum 4. 5" Hg #HLY125 155 Opening Vacuum 5. 5" Hg #HLY125 165 Opening Vacuum 6. 5" Hg #HLY125 185 Opening Vacuum 8. 5" Hg #HLY125 1005 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
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