ARP Nut Kits

2011–2025 Subaru Forester / Subaru Impreza / Subaru WRX / Subaru STI 1/2˝-13 Stainless Steel Nut Kit

Part #: 401-8342

Overview

The ARP Nut Kits are precision-engineered fasteners designed for automotive enthusiasts and professionals who demand the highest quality and reliability in their builds. Crafted from aerospace-grade materials, these nuts provide exceptional strength and durability, making them ideal for high-performance applications, including racing, off-road, and street use. Whether you're assembling a custom engine, suspension, or chassis components, these nuts ensure a secure and long-lasting connection.

Designed specifically for your vehicle's needs, the ARP Nut Kits help support increased horsepower and torque by providing a reliable fastening solution that withstands the rigors of spirited driving and demanding conditions. Their polished finish not only offers corrosion resistance but also adds a sleek, professional look to your engine bay or chassis assembly.

Key Features

The ARP Nut Kits feature several technical advantages that set them apart from standard nuts:

• Manufactured from aerospace-quality stainless steel, ensuring exceptional tensile strength and corrosion resistance for long-term durability.
• 12-point style heads provide increased wrench engagement, allowing for easier installation and removal in tight spaces.
• Rated at 180,000 psi tensile strength, these nuts are engineered to withstand high loads and stresses encountered during high-performance driving.
• Polished finish enhances corrosion resistance and provides a clean, professional appearance.
• Designed without nylon inserts or self-locking features, these nuts rely on proper torque and thread engagement for secure fastening, making them suitable for critical applications where maximum strength is required.
• Compatible with standard 1/2˝-13 thread sizes, making them versatile for a wide range of automotive applications.

Construction & Design

The ARP Nut Kits are meticulously crafted from aerospace-grade stainless steel, which offers a perfect balance of strength, corrosion resistance, and aesthetic appeal. The 12-point head design allows for easier wrench access in confined spaces, reducing installation time and effort. The polished finish not only enhances visual appeal but also provides an additional layer of protection against rust and corrosion, ensuring the nuts maintain their integrity over time.

These nuts are engineered to meet or exceed industry standards for tensile strength, providing peace of mind that your fasteners will perform reliably under demanding conditions. Their robust construction makes them suitable for high-stress environments, including racing, off-road adventures, and high-performance street applications.

Installation & Fitment

The ARP Nut Kits are designed for straightforward, bolt-on installation. They utilize standard 1/2˝-13 threads, making them compatible with a wide range of automotive components. Proper torque specifications should be followed to ensure maximum holding strength and safety. No special tools or modifications are required, and these nuts are suitable for use in various applications including engine assembly, suspension components, and chassis hardware.

• Easy to install with standard wrenches.
• No cutting, drilling, or special tuning required.
• Ideal for high-performance and racing applications where strength and reliability are critical.

What's Included

• Complete set of stainless steel 12-point nuts
• No washers or additional hardware included; compatible with existing components

Ideal For

• Performance automotive enthusiasts
• Racing and track use
• Off-road builds requiring high-strength fasteners
• Street cars demanding reliable, corrosion-resistant hardware