ARP Stainless Steel Header Bolt Kit - 12-Point - 5/16" Wrench - 3/8"-16 - 1.000" Length - Set of 12 31013BL Includes two blue (80 durometer)

Includes two blue (80 durometer) poly bushings on the engine torque side and a single red (87 durometer) poly brake bushing

850 lb/in Spring Rate

your styles match the latest advancements

multi-piece liner to maximize energy absorption and impact performance

12 AN Female O-Ring Inlet

ARP Stainless Steel Header Bolt Kit - 12-Point - 5/16" Wrench - 3/8"-16 - 1.000" Length - Set of 12 31013BL Includes two blue (80 durometer)ARP 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