ARP Main Stud Kits

Part #: 201-5001

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 achieve a tensile strength of 190,000 psi, these studs are engineered to withstand the demanding conditions of high-performance engines. Ideal for automotive enthusiasts and professional rebuilders, this kit helps prevent main cap walk and fretting, ensuring consistent engine integrity under extreme loads. Whether you're assembling a race engine or upgrading a daily driver, these studs provide a secure, stable foundation for your engine components, supporting optimal performance and longevity.

Key Features

Designed with precision and durability in mind, the ARP Main Stud Kit offers several key benefits:

• Made from 8740 chromoly steel for exceptional strength and toughness
• Heat-treated in-house to a 190,000 psi tensile-strength rating for maximum durability
• Rolled J-form threads after heat treatment for stronger, more reliable threads
• Includes hardened, parallel-ground washers for precise load distribution
• High-quality nuts designed for secure fastening and ease of installation
• Engineered to eliminate main cap walk and protect engine threads during high-stress operation
• Suitable for a variety of BMW applications, ensuring versatile compatibility

Construction & Design

The studs are manufactured from premium chromoly steel, known for its excellent strength-to-weight ratio and resistance to fatigue. The precision rolled threads enhance thread integrity and reduce the risk of stripping or failure, providing a robust connection between the main caps and engine block. The inclusion of hardened washers ensures even load distribution, minimizing stress concentrations and promoting long-term reliability.

Installation & Fitment

Installation requires proper torque specifications and should be performed by experienced technicians familiar with engine assembly. Fitment details should be verified against your specific vehicle model and engine configuration to ensure compatibility.

What’s Included

The kit includes all necessary studs, hardened washers, and nuts required for a complete installation, providing everything needed to upgrade your engine's main cap fastening system.

Ideal For

This product is ideal for engine builders, performance enthusiasts, and professionals aiming to enhance engine strength, reliability, and performance in BMW applications or similar high-performance engines.