PAC Racing Springs Mini 8 Degree Valve Lock - 5/16 in Valve Stem - 0.050 in More Height - Black Oxide (Set of 16) TER20099 1978-1989 Mercury Grand MarquisWhen utilized Size:Large/X-Large Windshield Mounting Bolt Pattern 2 QRP50-820

1978-1989 Mercury Grand MarquisWhen utilized with Sniper EFI

Easy connections with no splicing or cutting into factory wiring

Furnace Brazed Cores - Eliminates sealing problems and need for epoxy on tanks

Quarter Master® is also deeply involved with race series across the country such as NASCAR’s Modified South & East

PAC Racing Springs Mini 8 Degree Valve Lock 5 16 in Valve Stem 0.050 in More Height Black Oxide (Set of 16) TER20099 1978 1989 Mercury Grand MarquisWhen utilized Size:Large X Large Windshield Mounting Bolt Pattern 2 QRP50 820 1978 1989 Mercury Grand MarquisWhen utilized with Sniper EFI Easy connections with no splicing or cutting into factory wiring