Feature: Made of metal material, durable and long service life for the car engine. It is a good replacement for the old or broken one. Match for the original one. The cylinder head stud is used on the engine to make sure the car's engine works well. This is a non-OEM product, accessory only! Specification: Condition: Brand New Material: Metal Color: Black Short Stud Thread Size: M8x1.25, 3/8-24 UNF Short Stud Size: 6.3x0.8cm / 2.48"x0.31"(L*D) Short Stud Nut Inner Diameter: 6mm / 0.24" Short Stud Nut Size: 10x16mm / 0.39"x0.63"(H*Max.D) Short Stud Washer Outer Diameter: 16mm / 0.63" Short Stud Washer Inner Diameter: 8mm / 0.31" Long Stud Thread Size: M11x2.0, 7/16-20 UNF Long Stud Size: 13.5x1.1cm / 5.31"x0.43"(L*D) Long Stud Nut Inner Diameter: 9mm / 0.35" Long Stud Nut Size: 11x18mm / 0.43"x0.71"(H*Max.D) Long Stud Washer Outer Diameter: 20mm / 0.79" Long Stud Washer Inner Diameter: 11mm / 0.43" Fitment:for Chevy LS1 LS6 2004-2006 5.3L 5.7L 6.0LNote: Please make sure your car model before ordering. Professional installation is recommended, please install the product in the right way. (No instruction include) Package Include: 30 x Cylinder Head Studs 30 x Nuts 30 x Washers
