Features: 1.Applicable Model: The header manifold stud kit is a replacement for Chevy V8 LSX LS1 LS2 LS3 LS6 LS7 4.8 5.3 6.0 6.2L. 2.Material: Made of stainless steel, the surface is polished, corrosion resistance and high temperature resistance, can be used for a long time in a high temperature environment. 3.Stable: Precision machining and design provide excellent strength and mechanical properties to ensure that the cylinder head is tightly coupled to the cylinder and does not come loose. 4.Tightly Fix: The screw size is M8x45MM, the nut size is M8, the structure is strong, the thread can be tightly connected, will not loosen. 5.Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. Specification: Item Type: Header Stud Bolts Kit_x000D_ Material: Stainless steel_x000D_ Screw Size: M8X45MM _x000D_ Nut Size: M8_x000D_ Application:_x000D_ Replacement for Chevy V8 GEN III IV LSX LS1 LS2 LS3 LS6 LS7 4.8 5.3 6.0 6.2L PackageList: 12 x Screw 12 x Nut