ARP Main Stud Kits

Universal Fitment

Part #: 201-5401

Overview

The ARP Main Stud Kit is a high-quality engine component designed to enhance the durability and reliability of your engine's main cap assembly. Crafted for performance enthusiasts and professional builders, this kit helps prevent main cap walk and fretting, ensuring consistent engine integrity under demanding conditions. Made from premium 8740 chromoly steel and heat-treated to achieve a tensile strength of 190,000 psi, these studs provide exceptional strength and stability. The precision J-form threads are rolled after heat treatment, resulting in stronger, more reliable threads compared to standard fasteners. Complete with hardened, parallel-ground washers and high-quality nuts, this kit offers a comprehensive solution for securing your engine's main caps with confidence.

Key Features

Designed for maximum strength and durability, the ARP Main Stud Kit features:

• Made from 8740 chromoly steel for superior toughness
• Heat-treated in-house to 190,000 psi tensile strength
• Precision rolled J-form threads for enhanced thread strength
• Hardened, parallel-ground washers for consistent load distribution
• High-quality nuts for secure fastening
• Engineered to eliminate main cap walk and fretting
• Suitable for a variety of BMW engine applications

Construction & Design

The studs are machined from high-grade chromoly steel, known for its excellent strength-to-weight ratio and durability. The heat-treatment process ensures the studs maintain their integrity under high-stress conditions, while the rolled threads improve thread engagement and resistance to stripping. The inclusion of hardened washers and nuts completes the design, providing a robust and reliable fastening system that withstands the rigors of high-performance engine builds.

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 BMW model and engine configuration to ensure compatibility. The kit is designed as a direct replacement for the factory main studs, offering a straightforward upgrade for performance applications.

What’s Included

The ARP Main Stud Kit includes all necessary studs, hardened washers, and nuts needed for a complete installation, providing everything required to secure your engine's main caps effectively.

Ideal For

This kit is ideal for performance enthusiasts, engine builders, and anyone looking to reinforce their engine's main cap assembly for increased strength and reliability during high-stress driving or racing conditions.