This is for an Intake/Exhaust manifold stud and nut. Our studs feature an Allen head socket for easy tightening on installation. (Stock replacements require one to double up on nuts to tighten.) Copper nuts also included.
Fits M10/M20/M30 Exhaust and Intake Manifolds, Keep in mind that a few of the intake side studs on your engine will be longer to accommodate miscellaneous hardware (thermostat housing, etc.).