ARP (180-1201) Header Bolt Kit

Oldsmobile 330-455 cid, 14 pack, 3/8" Size, .750" Under Head Length, 12-point head, Black Oxide, ARP Header Bolts 180-1201ARP Header Bolts & Header Studs For Oldsmobile. 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.ARP Header Bolts & Header Studs that are Stainless 300 material are not affected by corrosion or extreme heat, making it ideal for the application. What’s more, the compact 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 application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading.ARP Header Bolts & Header Studs come either black oxide chrome moly or Stainless 300. Both are nominally rated at 170,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled “NASCAR” models are available for those who wish to safety wire their header bolts to Special “NASCAR” model prevent loosening.Studs are measured OAL (Over All Length) and Bolts are measured UHL (Under Head Length)

• OLDS 330-355 3/8IN 12PT HEADER BOLT KIT