Holley Single Stage 155 Power Valve - High Flow R03J003 1968 Mercury Montego Base CID

1968 Mercury Montego Base CID 289 Naturally Aspirated GAS

16 Fins Per Inch Core -Allows more airflow to provide better cooling

Wheelie Bar Spring Adjuster

750 in Square Port

Neck Support

Holley Single Stage 155 Power Valve - High Flow R03J003 1968 Mercury Montego Base CIDSingle 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