ARP 12pt Hardware Kit

2011–2025 Subaru Forester / Subaru Impreza 2.0L Turbo

Part #: 641-1000

Overview

The ARP 12pt Hardware Kit is a premium fastener solution designed for automotive enthusiasts and professionals who demand the highest quality hardware for their builds. Whether you're assembling a performance engine, upgrading suspension components, or securing critical parts on your vehicle, this kit provides reliable, high-strength fasteners to ensure safety and durability. Crafted from top-grade materials, these bolts are engineered to withstand demanding conditions, making them ideal for street, spirited driving, and even track applications.

With ARP's reputation for precision and strength, this hardware kit helps support your vehicle's performance upgrades by providing a secure and reliable fastening solution. The 12-point head design allows for easier installation and removal in tight spaces, reducing the risk of stripping or damaging the fasteners during assembly or maintenance. Designed for those who want peace of mind and long-lasting performance, this kit is an essential addition to any high-performance build or repair.

Key Features

The ARP 12pt Hardware Kit offers several key features that set it apart from standard fasteners:

• Constructed from heat-treated 8740 chromoly steel, providing exceptional strength and durability for demanding automotive applications.
• Black oxide finish enhances corrosion resistance and gives a sleek, professional appearance.
• Nominally rated at 180,000 psi tensile strength, offering a substantial safety margin over typical Grade 8 hardware, ensuring your components stay secure under high stress.
• Designed with a 12-point head for improved access and easier installation in tight or hard-to-reach areas, reducing installation time and effort.
• Available in a wide range of thread sizes, head styles, and configurations to suit various applications, from engine assembly to chassis modifications.
• Precision-machined to strict tolerances for a perfect fit and reliable performance.
• Suitable for use on cars, boats, trailers, and other machinery requiring high-quality fasteners.
• Heat-treated for maximum strength and longevity, ensuring the fasteners maintain their integrity over time.
• Ideal for performance builds, restorations, or any project where high-quality hardware is critical for safety and reliability.

Construction & Design

The ARP 12pt Hardware Kit is meticulously engineered using premium materials to ensure maximum strength and corrosion resistance. The fasteners are made from 8740 chromoly steel, a material renowned for its toughness and ability to withstand high stress levels. The heat-treatment process further enhances the tensile strength, making these bolts capable of handling demanding automotive environments.

The black oxide finish not only provides a sleek appearance but also offers excellent corrosion resistance, extending the lifespan of the hardware. The 12-point head design allows for better torque application and easier access in confined spaces, which is especially beneficial during complex assembly or maintenance tasks. Each fastener is precision-machined to tight tolerances, ensuring a perfect fit and reducing the risk of stripping or cross-threading.

Performance & Reliability

Designed for high-performance applications, these fasteners provide a significant safety margin with their 180,000 psi tensile strength rating. They help support the integrity of your vehicle's critical components, whether you're building a race engine, upgrading suspension parts, or securing aftermarket modifications. The durability and strength of ARP hardware ensure that your fasteners will perform reliably under high loads, vibrations, and thermal cycles, giving you confidence in your build's safety and longevity.

Installation & Fitment

The ARP 12pt Hardware Kit is a bolt-on solution that requires no special tools beyond standard wrenches or sockets. The 12-point head design facilitates easier installation and removal, especially in tight or awkward spaces. These fasteners are designed to thread directly into compatible OEM or aftermarket components without the need for modifications. Proper torque specifications should be followed during installation to ensure optimal clamping force and safety. No cutting, drilling, or special tuning is required.

• Easy to install with standard hand tools
• Compatible with a wide range of automotive applications requiring 5/16˝-18 fasteners
• Ideal for engine assembly, chassis upgrades, and general hardware replacements

What's Included

• Complete set of high-strength 12pt bolts in various sizes and lengths as specified for your application
• All necessary nuts, washers, and hardware components for a comprehensive installation kit
• Instruction sheet with recommended torque specifications and assembly tips

Ideal For

• Performance automotive builds and upgrades
• Engine and transmission assembly
• Chassis reinforcement and suspension modifications
• Restorations requiring high-quality hardware
• Marine and trailer applications needing durable fasteners

Emissions Note

This hardware kit is designed for automotive use and does not impact emissions. It is intended for off-road, racing, or recreational use only and may not be legal for street use in all jurisdictions. Please check local regulations before installation.