ARP Cylinder Head Fasteners High Performance Head Studs

ARP High Performance Head Studs are engine cylinder head fasteners. They replace factory head bolts and are also sold as cylinder head studs or head stud kits. They are built for street performance, racing, and high-boost builds. Compared with stock bolts, studs help clamp the cylinder head to the block more evenly and consistently.

Key Features:

• Stud design: Studs apply purely axial loading during tightening, so the threads do not twist into the block. This helps give more accurate torque readings and more uniform clamping.
• High-strength materials: ARP makes its fasteners from premium alloy steels. Depending on the application, these include chrome moly and other high-tensile alloys that resist stretching and fatigue.
• Precision manufacturing: ARP rolls the threads after heat treatment. This improves fatigue life and thread strength, and it keeps thread quality consistent from stud to stud.
• Better gasket sealing: Even clamping load helps the head gasket seal. This is useful in engines that make high cylinder pressure, run nitrous, or use forced induction.
• Easier head removal: Studs stay in the block during service. This makes it easier to line up the head and gasket and lowers wear on the block threads from repeated disassembly.
• Made in the USA: ARP designs and builds its fasteners in the United States.

ARP is a long-time supplier of high-performance fasteners to motorsports teams and engine builders. These head studs suit rebuilds and performance upgrades where head gasket reliability matters. Use the assembly lubricant and torque procedure that ARP specifies for the part number you are installing.