ARP Pro Series Head Stud Kits

Multiple GMC Fitments / 2011–2025

Part #: 131-4002

Overview

The ARP Head Stud Kit is a high-quality fastening solution designed to provide reliable and consistent clamping force for your engine's cylinder heads. Crafted by ARP, a renowned name in performance fasteners, these head studs are engineered to meet the demands of both street and performance applications. Whether you're building a stock engine or a high-horsepower race setup, this kit ensures your cylinder heads are securely mounted, helping to prevent head gasket failures and ensuring optimal sealing under extreme conditions.

Designed for enthusiasts who seek durability, precision, and peace of mind, the ARP Pro Series Head Stud Kits are ideal for rebuilds, upgrades, or high-performance modifications on GMC engines spanning multiple models and years. With their superior material quality and manufacturing processes, these studs help support increased horsepower and torque, making them a valuable upgrade for any serious engine builder.

Key Features

The ARP Pro Series Head Stud Kits incorporate advanced engineering and premium materials to deliver unmatched strength and reliability. Key features include:

• Cold-Forged Construction: ARP Pro Series studs are cold-forged to ensure molecular integrity, resulting in a stronger, more durable fastener capable of withstanding high stress and thermal cycling.
• Heat Treatment: Each stud is heat-treated prior to thread rolling and machining, enhancing tensile strength and fatigue resistance for long-lasting performance.
• Complete Kit with Hardened Washers: All studs come with hardened parallel washers that distribute load evenly across the cylinder head, reducing the risk of warping or uneven clamping force.
• 12-Point Nuts Option: Available with 12-point nuts for easier installation and removal in tight engine bays, providing added convenience for mechanics and enthusiasts alike.
• Precision Thread Rolling: The threads are thread-rolled rather than cut, which increases the strength of the threads and reduces the risk of stripping under high torque.
• Universal Fitment: Designed to fit a wide range of GMC engines, these studs are suitable for various models and configurations, making them a versatile upgrade for your engine build.
• OEM-Quality Materials: Manufactured from high-grade alloy steel, these studs offer excellent corrosion resistance and longevity, even in demanding conditions.
• Engineered for Performance: Whether you're restoring a stock engine or pushing the limits with forced induction, these head studs help maintain proper head gasket sealing and improve overall engine reliability.

Construction & Design

The ARP Pro Series Head Stud Kits are meticulously engineered with precision-machined components to ensure perfect fitment and maximum strength. The studs are made from high-quality alloy steel and undergo a rigorous heat-treating process to optimize tensile strength and durability. The use of cold forging during manufacturing aligns the grain structure of the steel, resulting in a fastener that can handle the stresses of high-performance applications.

The inclusion of hardened parallel washers ensures even load distribution across the cylinder head surface, reducing the risk of warping or gasket failure. The 12-point nuts provide additional engagement points, making installation and removal easier in tight spaces. Overall, the design emphasizes strength, reliability, and ease of use, making these studs a trusted choice for engine builders and performance enthusiasts.

Installation & Fitment

The ARP Head Stud Kit is designed for straightforward, bolt-on installation. It uses the factory mounting points and does not require any modifications to your engine block or cylinder head. The studs thread directly into the engine block, providing a secure base for the cylinder head to be mounted with the included nuts and washers. No cutting, drilling, or special tuning is necessary, making this an ideal upgrade for both professional rebuilds and DIY enthusiasts.

For best results, follow ARP's recommended torque specifications and tightening sequence. Proper installation ensures maximum clamping force and long-term reliability, especially under high-performance conditions.

What's Included

• Complete set of high-strength alloy steel head studs
• Hardened parallel washers
• 12-point nuts (if selected)
• Installation instructions

Ideal For

• Engine rebuilds and upgrades for GMC models
• High-performance street and race applications
• Enthusiasts seeking reliable head gasket sealing under increased power levels
• Restorations requiring OEM-quality fasteners