OptiTorque Patriot Series Main Stud Kit - Hex Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Big Block Chevy ALL49375 -inch extruded gasket material

-inch extruded gasket material

Meets the requirements of all sanctioning bodies

generates digitalHolley is quickly becoming The New Standard In EFI

AFR Emissions Legal (versions from 1969-94 with heat riser

virtually eliminating concerns of the seal spinning out at high temperatures

OptiTorque Patriot Series Main Stud Kit - Hex Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Big Block Chevy ALL49375 -inch extruded gasket materialProduct Description: Main Stud Kit Patriot Series Hex Nuts 4 Bolt Mains Chromoly Black Oxide Big Block Chevy OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.