These ARP High Performance series head bolt kits are tough! They are rated at 170,000 psi 15 percent stronger than Grade 8 fasteners. They come available with hex heads or reduced wrenching 12-point heads that eliminate the need for valvetrain removal when re-torquing cylinder heads.
Proposition 65 Warning:
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
- Style:
- Bolt
- Thread Size:
- N/A
- Head Style:
- 12-point
- Undercut Stud:
- No
- Washers Included:
- Yes
- Material:
- 8740 chromoly
- Finish:
- Black Oxide
- Quantity:
- Sold as a kit.
- Notes:
- Kit includes stepped head stud, no bushings required.
- Make:
- Ford
- Engine Family:
- Ford small block Windsor
- Engine Sizes:
- 4.7L/289-5.0L/302
- Years:
- 1963-2001
- Cylinder Head Style:
- Windsor
