ARP Nut Kits

2010–2025 Universal / Automotive M12 x 1.25 Nut Kit

Part #: 301-8349

Overview

The ARP Nut Kits are precision-engineered fasteners designed for high-performance automotive and industrial applications. Crafted from aerospace-quality materials, these nuts provide exceptional strength and durability, making them ideal for enthusiasts and professionals who demand reliability under extreme conditions. Whether you're assembling engine components, suspension parts, or custom hardware, ARP nuts ensure a secure and lasting fit.

Designed with versatility in mind, these M12 x 1.25 nuts are suitable for a wide range of vehicles and machinery. Their robust construction and high tensile strength help support your vehicle's performance upgrades, ensuring that critical fasteners maintain integrity during spirited driving, off-road adventures, or heavy-duty use. With ARP's reputation for quality, you can trust these nuts to deliver consistent, dependable performance every time.

Key Features

ARP Nut Kits incorporate several advanced features that set them apart from standard hardware. Made from aerospace-quality steel or chromoly, these nuts are engineered to withstand extreme stress and high torque loads. The 12-point style head provides increased wrench engagement, allowing for easier installation and removal in tight spaces. The black oxide finish not only enhances corrosion resistance but also offers a sleek, professional appearance.

• Constructed from aerospace-grade chromoly or stainless steel for maximum strength and longevity.
• 12-point nut style for improved wrench grip and easier installation in confined areas.
• Rated at 180,000 psi tensile strength, supporting demanding applications and high-stress environments.
• Black oxide finish provides corrosion resistance and a clean, finished look.
• Designed without nylon inserts or self-locking features, suitable for applications requiring high clamp loads and reusability.
• Compatible with standard 16mm wrench sizes for broad usability across various tools and setups.

Construction & Design

The ARP Nut Kits are meticulously manufactured using aerospace-quality materials, ensuring they meet the highest standards of strength and durability. The nuts feature a 12-point head design, which allows for greater torque application and easier tightening in tight or hard-to-reach spaces. The black oxide coating not only enhances corrosion resistance but also minimizes glare and provides a professional finish.

These nuts are engineered to withstand extreme tensile loads, supporting your vehicle's performance modifications and ensuring safety during high-stress conditions. Their precise threading and high-quality manufacturing process guarantee a perfect fit with compatible bolts and studs, reducing the risk of stripping or failure over time.

Performance & Reliability

With a tensile strength rating of 180,000 psi, ARP nuts are built to support demanding applications where strength and reliability are critical. They are ideal for use in engine assemblies, suspension components, and other high-performance hardware. Their aerospace-grade construction ensures consistent performance, even under the most challenging conditions, giving you peace of mind during intense driving or off-road adventures.

Installation & Fitment

Installing the ARP Nut Kits is straightforward, thanks to their standard 16mm wrench compatibility and precise threading. These nuts are designed for bolt or stud applications with M12 x 1.25 thread sizes. No special tools or modifications are required, making them a perfect upgrade or replacement for OEM hardware. Their robust construction ensures a secure fit that maintains integrity over multiple uses.

• Easy bolt-on installation with common hand tools.
• No need for special torque procedures beyond standard specifications.
• Suitable for a wide range of automotive and industrial applications requiring M12 x 1.25 fasteners.

What's Included

• Complete set of ARP M12 x 1.25 nuts in black oxide finish.
• High-quality hardware designed for demanding performance applications.

Ideal For

• Performance automotive enthusiasts upgrading or replacing factory fasteners.
• Engine builders and mechanics requiring high-strength nuts for critical components.
• Off-roaders and heavy-duty users needing reliable, durable fasteners.
• Custom fabrication projects where aerospace-grade quality is desired.

Emissions Note

This product is a high-performance fastener kit designed for automotive use and does not impact emissions. It is suitable for off-road or race applications and may not be legal for street use in all jurisdictions. Please verify local regulations before installation.