ARP Main Stud Kits

Part #: 201-5000

Overview

The ARP Main Stud Kit is a high-strength fastening solution designed for performance-oriented engine builds. Crafted from premium 8740 chromoly steel and heat-treated to achieve a tensile strength of 190,000 psi, these studs provide exceptional durability and reliability. Ideal for automotive enthusiasts and professional builders, this kit helps eliminate main cap walk and fretting, ensuring consistent engine integrity under demanding conditions. Whether you're restoring a classic or building a high-performance engine, these studs support a secure and stable assembly, contributing to improved engine longevity and performance consistency.

Key Features

This ARP Main Stud Kit is engineered with precision and strength in mind, offering several key benefits:

• Made from 8740 chromoly steel for superior strength and durability
• Heat-treated in-house to a 190,000 psi tensile-strength rating
• Rolled J-form threads for enhanced thread strength and fatigue resistance
• Includes hardened, parallel-ground washers for precise load distribution
• High-quality nuts designed for secure fastening and ease of installation
• Designed to prevent main cap walk and thread fretting during high-stress operation
• Suitable for a variety of BMW engine applications within the specified fitment range

Construction & Design

The studs are manufactured from 8740 chromoly steel, a material renowned for its excellent strength-to-weight ratio and fatigue resistance. The heat-treatment process enhances the tensile strength, ensuring the studs can withstand extreme engine stresses. The rolled J-form threads are precisely machined and heat-treated to provide stronger, more reliable threads compared to standard fasteners, reducing the risk of thread stripping or failure during high-performance use.

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 engine model and the part number to ensure compatibility.

What’s Included

The kit includes all necessary studs, hardened washers, and nuts required for a complete installation, providing a comprehensive solution for securing your engine's main caps.