ARP Main Stud Kits

Universal Fitment

Part #: 154-5401

Overview

The ARP Main Stud Kit is a high-strength fastening solution designed for engine builders seeking enhanced durability and reliability. Crafted from premium 8740 chromoly steel and heat-treated to a tensile strength of 190,000 psi, these studs provide a secure and stable connection for your engine's main caps. Ideal for performance applications and engine rebuilds, this kit helps prevent main cap walk and fretting, ensuring consistent alignment and reducing the risk of engine failure under demanding conditions. Whether you're building a high-performance street engine or a race-ready powerplant, these studs offer the strength and precision needed for a professional-grade assembly.

Key Features

This kit features precision-engineered components designed to support your engine's integrity and longevity:

• Made from heat-treated 8740 chromoly steel for maximum strength and durability
• Rolled J-form threads after heat treatment for superior thread strength and fatigue resistance
• Complete with hardened, parallel-ground washers for even load distribution
• High-quality nuts designed for secure fastening and ease of installation
• Engineered to eliminate main cap walk and fretting under high-stress conditions
• Suitable for a variety of Ford engine applications
• Designed for professional engine assembly and rebuilds

Construction & Design

The studs are machined from high-grade chromoly steel, known for its exceptional strength-to-weight ratio and resistance to fatigue. The J-form threads are rolled after heat treatment, providing a stronger, more reliable thread profile that resists stripping and wear. Hardened washers and nuts complement the studs, ensuring a secure fit that maintains clamping force over time.

Installation & Fitment

Installation requires proper torque specifications and basic hand tools. Fitment should be verified against your engine's specifications and the part number provided. These studs are designed to fit multiple Ford engine models, making them a versatile upgrade for various rebuild projects.

What’s Included

The kit includes all necessary studs, hardened washers, and nuts needed for a complete main cap fastening upgrade, ensuring a straightforward installation process and a reliable, long-lasting engine assembly.

Ideal For

Perfect for engine builders, performance enthusiasts, and professional rebuilders seeking to enhance engine strength and reliability in high-performance or racing applications.