ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 220,000 psi.

Pro series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 220,000 psi.

These Pro series rocker arm studs from ARP are ideal for competition applications. They are made from 8470 chromoly steel and are heat-treated to 200,000 psi tensile strength.

These Pro series rocker arm studs from ARP are ideal for competition applications. They are made from 8470 chromoly steel and are heat-treated to 200,000 psi tensile strength.

These Pro series rocker arm studs from ARP are ideal for competition applications. They are made from 8470 chromoly steel and are heat-treated to 200,000 psi tensile strength

Headers can represent a sizable investment, so you'll want to keep them securely attached. In addition, exhaust leaks can cost you power and even cause damage to your vehicle.

Headers can represent a sizable investment, so you'll want to keep them securely attached. In addition, exhaust leaks can cost you power and even cause damage to your vehicle.