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:
- 3/8-16 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 16.
- Notes:
- 3/8 in. wrench head size.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 6.5L/396-7.4L/454
- Years:
- 1966-1990
- Engine Family:
- Chevy big block Gen V
- Engine Family:
- Chevy big block Gen VI
- Years:
- 1996-2000
- Make:
- Ford
- Engine Family:
- Ford big block 385 Series
- Engine Sizes:
- 7.0L/429-7.5L/460
- Years:
- 1968-1987
- Engine Family:
- Ford big block FE
- Engine Sizes:
- 5.8L/352-7.0L/428
- Years:
- 1957-1976
- Engine Family:
- Ford Cleveland
- Engine Sizes:
- 5.8L/351
- Years:
- 1970-1973
- Engine Family:
- Ford Modified
- Engine Sizes:
- 5.8L/351-6.6L/400
- Years:
- 1971-1982
- Engine Family:
- Ford small block Windsor
- Engine Sizes:
- 4.2L/255-5.8L/351
- Years:
- 1962-1995
