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, 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. Studs and bolts 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.
- Style:
- Bolt
- Thread Size:
- 5/16-18 in.
- Head Style:
- 12-point
- Underhead Length (in.):
- 0.750 in.
- Underhead Length (mm):
- 19.00mm
- Material:
- Chromoly
- Finish:
- Black oxide
- Quantity:
- Sold as a set of 14.
- Notes:
- 170,000 psi tensile strength.
- Make:
- Mopar
- Engine Family:
- Mopar small block LA
- Engine Sizes:
- 4.5L/273-5.9L/360
