ARP Pro Series Cylinder Head Stud Kit Undercut

The ARP Pro Series Cylinder Head Stud Kit with undercut studs is a high-strength head stud and fastener set for engine builders who want secure, consistent cylinder head clamping. Pro Series head studs are widely used in performance street, racing and high-output engine builds. They replace factory head bolts and are a common choice when cylinder pressure and boost put extra load on the head gasket joint.

Key Features:

• Undercut stud design: The shank is relieved between the threaded sections. This helps the stud stretch evenly and spreads clamping load more uniformly.
• Studs instead of bolts: Studs thread into the block and are not rotated during tightening. This reduces torsional stress on the fastener and allows more accurate, repeatable torque readings and clamp load.
• High-strength alloy construction: ARP Pro Series studs are made for demanding engine applications and are well suited to performance use.
• Precision rolled threads: Threads are rolled after heat treatment for greater fatigue strength and consistent fit.
• Complete kit: Kits include the hardware ARP specifies for the application, such as nuts and washers. Check the specific child item for kit contents.

ARP is a respected American manufacturer of high-performance fasteners. It serves automotive, motorsports and industrial customers. Choose the specific variant for your engine to get the correct stud kit for your build.