For Oldsmobile 330-455 cid, 14 pack, 3/8" Size, 1.670" Over All Length, Hex head, Stainless 300, ARP Header Studs 480-1411.
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.
Stainless 300 ARP Header Bolts & Header Studs are not affected by corrosion or extreme heat, making them ideal for the application.
The compact 12-point nut allows easy access for 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 in either black oxide chrome moly or Stainless 300, both 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 prevent loosening.
