ARP High Performance Series Head Bolt Kit

Multiple Ford Fitments / Head Bolt Kit

Part #: 155-3602

Overview

The ARP High Performance Series Head Bolt Kit is engineered for enthusiasts and professional builders seeking reliable, high-strength fasteners for Ford engines. Designed to withstand the demanding conditions of high-performance applications, these head bolts provide a secure and durable clamping force to ensure proper cylinder head sealing and optimal engine performance. Whether you're rebuilding a stock engine or pushing your vehicle to its limits with modifications, this kit offers the strength and consistency needed for a successful build.

Constructed from premium chromoly steel and finished with a black oxide coating, these head bolts are rated at an impressive 180,000 psi, making them approximately 15 percent stronger than standard Grade 8 fasteners. This increased strength helps support higher cylinder pressures, improved combustion efficiency, and enhanced overall engine reliability. The kit is suitable for a variety of Ford models, providing a versatile solution for performance and racing applications.

Key Features

ARP's High Performance Series Head Bolt Kit offers several advanced features designed to meet the needs of serious engine builders:

• Superior Material: Made from high-strength chromoly steel, these bolts deliver exceptional tensile strength and durability under extreme conditions.
• Black Oxide Finish: Provides corrosion resistance and a sleek appearance, ensuring longevity and consistent performance over time.
• Reduced Wrenching Hex Head / 12-Point Head Options: The kit includes head styles that facilitate easier installation and re-torqueing without removing the valvetrain, saving time and effort during assembly or maintenance.
• Rated at 180,000 psi: Significantly stronger than standard fasteners, supporting higher horsepower and boost levels.
• Includes Washers: Ensures proper load distribution and secure fastening for maximum clamping force.
• Versatile Fitment: Compatible with multiple Ford engines, making it an ideal choice for various builds and applications.

Construction & Design

The ARP Head Bolt Kit features a precision-machined chromoly steel construction, ensuring consistent thread engagement and reliable clamping force. The black oxide finish not only enhances corrosion resistance but also reduces glare in engine bays. The bolts are designed with a reduced wrenching hex head or 12-point head, allowing for easier access in tight engine compartments and simplifying the re-torque process. The inclusion of washers helps distribute load evenly, preventing head gasket leaks and maintaining optimal sealing integrity during high-stress conditions.

Installation & Fitment

The ARP Head Bolt Kit is designed for straightforward, bolt-on installation. It is compatible with a range of Ford engines, and no special modifications are typically required beyond standard engine assembly procedures. The included head styles facilitate easier re-torqueing without valvetrain removal, streamlining maintenance and rebuilds. Always follow ARP's recommended torque specifications and sequence to ensure proper installation and maximum fastener performance. No cutting, drilling, or additional tuning is necessary.

• Ensure proper cleaning and lubrication of threads before installation.
• Use a calibrated torque wrench to achieve specified torque values.
• Follow the manufacturer's tightening sequence for optimal results.

What's Included

• Complete set of chromoly steel head bolts with black oxide finish
• Included washers for each bolt
• Installation instructions

Ideal For

• High-performance Ford engine builds
• Rebuilding or upgrading stock engines for increased strength
• Racing and spirited driving applications
• Enthusiasts seeking reliable, high-quality fasteners for demanding conditions