ARP Head Bolt Kits

Multiple Buick Fitments (223-3701)

Part #: 223-3701

Overview

The ARP Head Bolt Kit is a high-performance fastener solution designed for enthusiasts and professionals seeking reliable, durable, and precise cylinder head fastening. Specifically engineered for multiple Buick applications, this kit ensures optimal clamping force and consistent torque readings, supporting the integrity of your engine's head gasket seal. Whether you're rebuilding, upgrading, or maintaining your Buick engine, these head bolts provide the strength and precision needed for demanding driving conditions, including spirited street driving, performance tuning, and off-road use.

Constructed with advanced materials and manufacturing processes, the ARP Head Bolt Kit helps support increased horsepower and torque, ensuring your engine maintains proper compression and performance over time. Its robust design minimizes the risk of head gasket failure and maintains proper cylinder head alignment, contributing to the overall reliability and longevity of your engine.

Key Features

Designed for high-performance applications, the ARP Head Bolt Kit offers several key features that set it apart from standard fasteners:

• Material Excellence: Made from 8740 chromoly steel, these bolts deliver exceptional strength and toughness, rated at an impressive 190,000 psi tensile strength, ensuring they withstand extreme engine stresses.
• Cold-Forged Manufacturing: The bolts are cold-forged to ensure molecular integrity, resulting in a more uniform grain structure that enhances durability and fatigue resistance.
• Heat Treatment: Each fastener undergoes rigorous heat treatment prior to thread rolling and machining, optimizing hardness and strength for reliable performance under high thermal and mechanical loads.
• Complete Kit with Washers: All kits include hardened parallel washers that promote even load distribution across the cylinder head, helping achieve accurate torque readings and preventing uneven clamping forces.
• Versatile Head Styles: Available with hex and 12-point heads, providing flexibility for different engine configurations and installer preferences.
• Precision Thread Rolling: Thread rolling enhances the fastener's fatigue life and load-carrying capacity, ensuring long-lasting performance.
• Corrosion Resistance: The high-quality materials and surface treatments help resist corrosion, maintaining integrity over time and in various operating environments.
• Engine Compatibility: Designed for multiple Buick models, these head bolts are suitable for engines requiring high-strength fasteners for optimal sealing and performance.

Construction & Design

The ARP Head Bolt Kit features a meticulously engineered design focused on strength, precision, and reliability. Crafted from 8740 chromoly steel, these bolts are cold-forged to create a dense, uniform microstructure that enhances their load-bearing capacity. The heat treatment process further hardens the fasteners, ensuring they can withstand the intense pressures and thermal cycles typical of high-performance engines.

The inclusion of hardened parallel washers ensures even load distribution across the cylinder head surface, reducing the risk of warping or uneven clamping. The bolts' design incorporates a 12-point head option, allowing for easier installation and removal in tight engine bays, while the hex head version offers a more traditional tool engagement. The thread rolling process not only improves fatigue life but also enhances the overall strength of each fastener, making them suitable for demanding applications where reliability is critical.

Installation & Fitment

The ARP Head Bolt Kit is designed for straightforward, bolt-on installation. These fasteners are compatible with the specified Buick models listed in the fitment guide, and no special modifications are required for proper installation. It is recommended to follow the torque specifications provided by ARP and your vehicle's service manual to ensure proper clamping force and engine integrity. The use of a quality torque wrench is essential for achieving the correct preload and securing the cylinder head effectively.

• Ensure all threads and mating surfaces are clean and free of debris before installation.
• Apply ARP's recommended assembly lubricant to the threads and under the bolt heads to achieve accurate torque readings.
• Follow the specified tightening sequence and torque pattern to evenly distribute clamping force.

Proper installation of these high-strength bolts will help maintain engine integrity and performance over the long term. No cutting, drilling, or tuning is required, making this a reliable upgrade for your Buick engine.

What's Included

• Complete set of high-strength cylinder head bolts
• Hardened parallel washers
• Installation instructions and torque specifications

Ideal For

• Performance enthusiasts seeking reliable head fasteners for Buick engines
• Engine rebuilds and upgrades requiring high-strength, durable bolts
• Street and spirited driving applications where engine integrity is critical
• Off-road or racing scenarios demanding maximum fastener strength