ARP Nut Kits

2011–2025 Subaru Forester / Subaru Impreza / Subaru WRX 5/16˝-24 Nut Kit

Part #: 200-8203

Overview

The ARP Nut Kits are precision-engineered fasteners designed for automotive enthusiasts who demand the highest quality and reliability. Crafted from aerospace-grade materials, these nuts provide a secure and durable fastening solution for a variety of performance and restoration applications. Whether you're building a race car, upgrading your suspension, or performing custom modifications, ARP nut kits ensure your components stay firmly in place under demanding conditions.

Ideal for street, track, or off-road use, these nuts are engineered to withstand extreme stresses and provide consistent performance. Their high tensile strength and corrosion-resistant finish make them a dependable choice for both daily drivers and competitive vehicles. With ARP's reputation for quality and precision, you can trust these nut kits to deliver long-lasting performance and peace of mind.

Key Features

ARP Nut Kits feature a robust design and premium materials that set them apart from standard hardware. The 5/16˝-24 thread size makes them versatile for a wide range of automotive applications, including securing suspension components, engine parts, or custom fabrication projects. The 12-point hex head allows for easy installation and removal with standard tools, even in tight spaces.

• Manufactured from aerospace-quality steel, ensuring exceptional strength and durability.
• Available in chromoly or stainless steel options for enhanced corrosion resistance and aesthetic appeal.
• Rated at 180,000 psi tensile strength, providing superior holding power under high loads.
• Designed with a cadmium finish for excellent corrosion resistance, especially in harsh environments.
• Includes no washers, focusing on a clean, secure fit for your fastening needs.
• Self-locking design with nylon inserts ensures the nuts stay tight during operation, reducing the risk of loosening due to vibration.
• Perfect for high-performance applications where strength and reliability are critical.

Construction & Design

The ARP Nut Kits are meticulously crafted from aerospace-grade steel, which offers an outstanding balance of strength, toughness, and corrosion resistance. The nuts feature a 12-point hex head design, allowing for better torque application and easier access in confined spaces. The cadmium plating not only enhances corrosion resistance but also provides a sleek, professional appearance.

The nylon insert in these nuts acts as a self-locking mechanism, preventing loosening caused by vibration or thermal cycling. This feature is especially important in high-performance and racing environments, where maintaining tight fastenings is crucial for safety and performance. The precise threading and high-quality manufacturing ensure a perfect fit and consistent torque throughout the life of the fastener.

Installation & Fitment

Installing the ARP Nut Kits is straightforward and requires only standard hand tools. The nuts are designed to thread directly onto compatible 5/16˝-24 bolts or studs, providing a secure and precise fit. No special modifications, cutting, or tuning are necessary. For optimal torque, use a calibrated wrench to ensure proper tightening according to ARP's specifications.

• Simply thread the nut onto the matching bolt or stud until snug.
• Use a torque wrench to tighten to the recommended torque setting for your application.
• Ensure the nylon insert is properly engaged to prevent loosening over time.

What's Included

• One set of ARP 5/16˝-24 Nut Kits with 12-point hex heads

Ideal For

• Performance enthusiasts building or upgrading their vehicles
• Race car builders requiring high-strength, reliable fasteners
• Restoration projects needing aerospace-quality hardware
• Off-road vehicles exposed to harsh conditions