ARP Nut Kits

Universal M11 x 1.25 Nut Kit

Part #: 401-8361

Overview

The ARP Nut Kits are high-quality, all-metal, self-locking nuts designed for a wide range of automotive applications. Whether you're assembling engine components, securing suspension parts, or working on custom builds, these nuts provide a reliable and reusable fastening solution. Built with durability and precision in mind, they are ideal for enthusiasts and professionals who demand excellence in their hardware.

These nuts are engineered to withstand harsh conditions, including high temperatures and vibrations, making them suitable for both street and racing environments. Their unique elastic deformation creates a friction lock that prevents loosening due to vibrations, ensuring your assemblies stay tight over time. With ARP's reputation for quality and precision, you can trust these nuts to deliver consistent performance and peace of mind during your projects.

Key Features

ARP Nut Kits incorporate several advanced features that set them apart from standard nuts. These include:

• All-metal construction with high-grade stainless steel, providing excellent strength and corrosion resistance.
• Self-locking design utilizing elastic deformation to create a positive, vibration-resistant lock without the need for additional locking mechanisms.
• Available in both 6-point Jet-nuts and 12-point K-nuts, offering versatility for various applications and wrench compatibility.
• Offset design enhances clearance and accessibility in tight spaces, simplifying installation and removal.
• Lightweight construction reduces overall weight without sacrificing strength, ideal for performance builds.
• Reusability ensures long-term value and sustainability for multiple projects or repairs.
• Compatible with M11 x 1.25 thread size, a common standard in many automotive and performance applications.
• Includes an M13 wrench size for easy installation and removal, streamlining your assembly process.

Construction & Design

The ARP Nut Kits are crafted from premium stainless steel, ensuring durability and resistance to corrosion and high temperatures. The nuts feature a precise, self-locking mechanism that relies on elastic deformation, providing a secure fit that resists vibration-induced loosening. Their offset, lightweight design allows for easier access in confined spaces, reducing installation time and effort. The combination of high-quality materials and thoughtful engineering results in a robust fastening solution that maintains integrity under demanding conditions.

Performance & Reliability

Designed for reliability and long-term performance, these nuts help support the integrity of critical assemblies in your vehicle. Their positive-locking feature ensures they stay tight even in high-vibration environments, reducing the risk of loosening that can lead to component failure. Whether used in engine builds, suspension setups, or other high-stress applications, ARP Nut Kits provide a dependable fastening solution that meets or exceeds industry standards.

Installation & Fitment

Installing the ARP Nut Kits is straightforward, thanks to their standard M11 x 1.25 thread size and included M13 wrench compatibility. These nuts are designed for bolt or stud applications where a secure, vibration-resistant lock is required. No special tools beyond a standard wrench are necessary, and their self-locking feature eliminates the need for additional lock washers or thread-locking compounds. Their offset design allows for easier access in tight or hard-to-reach areas, making installation quick and hassle-free.

• Simple bolt-on installation with standard tools
• No cutting, drilling, or special modifications required
• Reusable and designed for multiple uses without loss of locking ability

What's Included

• All-metal self-locking nuts in your chosen configuration (6-point Jet-nuts or 12-point K-nuts)
• Installation wrench (M13 size)
• Comprehensive installation instructions

Ideal For

The ARP Nut Kits are perfect for automotive enthusiasts, professional mechanics, and fabricators seeking a reliable, reusable fastening solution. They are suitable for engine assemblies, suspension components, chassis work, and any application where vibration resistance and durability are critical. Their versatility makes them a valuable addition to any toolbox, especially for high-performance builds and maintenance tasks requiring secure, long-lasting fasteners.

Emissions Note

These nuts are designed for use in standard automotive applications and do not impact emissions or require special legal considerations. Always verify compatibility with your specific vehicle and application requirements.