ARP 12pt Hardware Kit

2011–2025 Subaru Forester / Subaru Impreza / Subaru WRX 1/4 in.-20 Thread

Part #: 640-0515

Overview

The ARP 12pt Hardware Kit is a premium-quality fastener solution designed for automotive enthusiasts and professionals who demand the highest standards in their builds. Whether you're assembling a performance engine, upgrading suspension components, or securing critical parts on your vehicle, this hardware kit provides the strength, durability, and reliability needed to ensure a secure fit. Crafted from top-grade materials, these fasteners are ideal for street, track, or off-road applications where safety and performance are paramount.

Designed by ARP, a trusted name in high-performance fasteners, this kit offers a robust solution for those seeking to replace or upgrade their existing hardware with components that can withstand demanding conditions. The kit's versatility makes it suitable for a wide range of applications, including engine assembly, chassis reinforcement, and other critical mounting points on compatible Subaru models from 2011 to 2025.

Key Features

ARP's 12pt Hardware Kit features several technical advantages that set it apart from standard fasteners:

• Manufactured from heat-treated 8740 chromoly steel, providing exceptional strength and toughness for demanding automotive applications.
• Black oxide finish offers corrosion resistance and a sleek, professional appearance suitable for both performance and restoration projects.
• Nominally rated at 180,000 psi tensile strength, offering a substantial safety margin over traditional Grade 8 hardware, ensuring your vehicle's critical components stay securely fastened under high stress.
• Designed with a 12-point head configuration, allowing for increased torque application and easier access in tight or hard-to-reach spaces.
• Available in a wide range of thread sizes, head styles, and options to match your specific needs and vehicle requirements.
• Precision-machined to strict tolerances for a perfect fit and reliable performance.
• Suitable for use in automotive, marine, and trailer applications, providing versatility across various projects.
• Backed by ARP's reputation for quality and engineering excellence, ensuring long-lasting performance and peace of mind.

Construction & Design

This hardware kit is constructed from ARP's proprietary 8740 chromoly steel, a material renowned for its high strength-to-weight ratio and durability. The fasteners undergo a specialized heat-treating process that enhances their tensile strength and fatigue resistance, making them capable of withstanding the rigors of high-performance driving and demanding environments. The black oxide coating not only provides corrosion resistance but also reduces glare and enhances the overall aesthetic of your engine bay or chassis.

The 12-point head design allows for increased torque application and better grip in tight spaces, reducing the risk of stripping or rounding off the fastener head during installation or removal. Each fastener is machined to precise specifications, ensuring a consistent, high-quality fit that meets or exceeds industry standards. This attention to detail ensures your hardware maintains its integrity over time, even under extreme conditions.

Performance & Reliability

With a tensile strength rated at 180,000 psi, these ARP fasteners provide a significant safety margin compared to standard hardware. This strength ensures that your critical components remain securely fastened during spirited driving, high-performance applications, or off-road adventures. The durable construction helps prevent loosening or failure, contributing to the overall safety and reliability of your vehicle.

Installation & Fitment

The ARP 12pt Hardware Kit is designed for straightforward, bolt-on installation. It uses the factory or OEM mounting points and thread sizes, making it compatible with a variety of Subaru models from 2011 to 2025. No special tools or modifications are typically required, and the fasteners can be installed with standard hand tools. Always ensure proper torque specifications are followed to maximize safety and performance.

• Easy to install with common hand tools.
• Designed to fit OEM and aftermarket components with matching thread sizes.
• No cutting, drilling, or special modifications are necessary.

What's Included

• Complete set of ARP 12pt fasteners in the specified thread size and head style.
• All necessary hardware components for your application.
• Installation instructions and technical data sheet for optimal torque settings.

Ideal For

• Performance engine builds and upgrades
• Chassis reinforcement and suspension upgrades
• Restoration projects requiring high-quality fasteners
• Off-road and racing applications demanding maximum strength

Emissions Note

This hardware kit is intended for off-road or racing use only and is not designed for emissions compliance. Always verify your local regulations before installation.