ARP Stainless Steel Header Bolt Kit - 12-Point - 5/16" Wrench - 3/8"-16 - 0.750" Length - Set of 12 42032BK Spread port heads have the

Spread port heads have the center exhaust ports spread apart 5/8'' over stock L98 GM heads

6-10 Depth

84 in Long

Universal Steel Rods

ARP Stainless Steel Header Bolt Kit - 12-Point - 5/16" Wrench - 3/8"-16 - 0.750" Length - Set of 12 42032BK Spread port heads have theARP 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 Stainless 300 material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, thecompact 12 point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your