ARP High Performance Series Head Bolt Kit

Multiple Buick Fitments 2011–2025

Part #: 125-3601

Overview

The ARP Head Bolt Kit is engineered for automotive enthusiasts and professional rebuilders seeking reliable, high-strength fasteners for Buick engines. Designed to withstand extreme conditions and provide consistent clamping force, these head bolts are an essential upgrade for performance builds, engine restorations, or high-performance applications. Whether you're rebuilding a stock engine or pushing your vehicle's limits with modifications, ARP's head bolt kits ensure your cylinder heads are secured with precision and durability.

Constructed from premium materials and manufactured to exacting standards, these head bolts help support increased horsepower and torque, while maintaining the integrity of your engine's cylinder head and block. Their robust design minimizes the risk of head gasket failure and ensures proper sealing under high stress, making them ideal for street, strip, or track use.

Key Features

ARP High Performance Series head bolt kits are built with durability and performance in mind. They feature a high-strength chromoly steel construction that is rated at an impressive 180,000 psi, making them 15 percent stronger than traditional Grade 8 fasteners. This increased strength provides enhanced clamping force, which is critical during high-performance operation or forced induction setups.

• Material & Finish: Made from high-quality chromoly steel with a black oxide finish for corrosion resistance and a sleek appearance.
• Design & Compatibility: Available with either a reduced wrenching hex head or a 12-point head, facilitating easier installation and re-torqueing without valvetrain removal.
• Included Components: Comes complete with washers to ensure proper load distribution and secure fastening.
• Strength & Reliability: Rated at 180,000 psi, these bolts provide peace of mind during high-stress engine operation.
• Ease of Use: Designed for straightforward installation, compatible with a wide range of Buick engines from 2011 to 2025 models.

Construction & Design

These ARP head bolts are meticulously manufactured from premium chromoly steel, known for its exceptional strength-to-weight ratio and durability. The black oxide finish not only enhances corrosion resistance but also provides a professional, finished look. The bolts feature a precise thread pitch and undercut design to optimize clamping force and minimize stretch or fatigue over time.

The choice of head style—either a reduced wrenching hex or a 12-point head—allows for easier access in tight engine bays and simplifies the installation process. The inclusion of washers ensures even load distribution, reducing the risk of head gasket leaks and maintaining optimal sealing pressure across the cylinder head surface.

Installation & Fitment

Installing these ARP head bolts is straightforward for experienced mechanics and enthusiasts familiar with engine assembly. They are designed as direct replacements for OEM fasteners, requiring no modifications or special tools beyond standard socket sets. Proper torque specifications should be followed as per ARP's instructions to ensure optimal clamping force and engine reliability. No valvetrain removal or engine disassembly beyond standard procedures is necessary, depending on your vehicle's configuration.

• Easy bolt-on installation with common hand tools
• No cutting, drilling, or additional modifications required
• Follow ARP's recommended torque sequence and specifications for best results

What's Included

• Complete set of high-performance chromoly steel head bolts
• Washers for load distribution
• Installation instructions

Ideal For

• Engine rebuilds and restorations for Buick models from 2011 to 2025
• High-performance street and strip applications
• Enthusiasts seeking reliable, durable fasteners for forced induction or high RPM use
• Professional engine builders and DIY mechanics aiming for quality and consistency