ARP Cylinder Head Stud Kit

The ARP cylinder head stud kit is a high-strength replacement for factory head bolts. It is also called a head stud set or head fastener kit. ARP builds these kits to give more consistent clamping force across the cylinder head and gasket. That makes them a common choice for performance, racing, and heavy-duty engine builds.

Key Features:

• Studs are made from premium alloy steel. Some applications use ARP's higher-strength proprietary alloys.
• Rolled threads are made after heat treatment. This improves fatigue strength and thread accuracy.
• Studs thread into the block and are not twisted during installation. Torque is applied to the nuts instead. This gives more accurate torque readings and more even gasket loading.
• Kits are designed to resist stretching and to hold clamping load under high cylinder pressure, boost, and nitrous.
• Hardened nuts and washers are included as specified for each kit.
• Each kit is made for a specific application. The correct fit, thread, and hardware depend on the part number you choose.
• ARP manufactures its fasteners in the USA. Its products are known for tight quality control and consistent strength.
• Assembly lubricant is typically supplied for proper torque and preload.

Upgrading to ARP head studs helps keep the head gasket sealed in demanding engines. It can help prevent head lift and blown head gaskets. Select the specific part number for your application from the options listed on this page.