OptiTorque Patriot Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - GM Duramax HLY554-190 John set his engineering experience

John set his engineering experience to work

ididit 55-'56-'57 Chevy Floor Mount 2401400010

Two 10 AN Female Inlets

Engine plate and grade 8 bolts included

For the performance-minded car owner

OptiTorque Patriot Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - GM Duramax HLY554-190 John set his engineering experienceProduct Description: Cylinder Head Stud Kit Patriot Series 12 Point Nuts Chromoly Black Oxide GM Duramax 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.