Header Bolt Kit For Chevrolet 3/8˝ wide header flange Black Oxide Hex Head

Header Bolt Kit For Chevrolet 3/8˝ wide header flange Black Oxide Hex HeadARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12 point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the pplication. Whats more, the compact 12 point inut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut starter nose that helps prevent cross threading.

including the elimination of main cap walk and fretting

with threads rolled after heat treat to ensure the optimum fatigue strength

Kits come complete with flat washers

Studs are preferred by many Pro engine builders because they eliminate the chance of pinching gaskets and contribute to easier engine assembly

the correct preload

It costs a lot more to do it this way

Simply stated

If there is a permanent increase of

Complete with washers and nuts where applicable

each stud is placed verticallyinto special racks and precisely heat-treated to 190

It’s important to note that lesser quality studsare not even centerless ground – the material is thread rolled inbar stock form (mostly before heat-treat

Both are available in black oxide finished chrome moly steel or polished ARP Stainless