ARP 12pt Hardware Kit

2011–2025 Subaru Forester / Subaru Impreza 2.0L Turbo / 2.5L

Part #: 641-1500

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. Crafted from top-grade materials, this kit provides reliable, high-strength fasteners that ensure secure and durable connections in a variety of applications. Whether you're assembling a performance engine, upgrading suspension components, or working on custom projects, these bolts are engineered to meet the rigorous demands of motorsport and street use.

Designed with versatility in mind, the ARP 12pt Hardware Kit is suitable for use on cars, boats, and trailers, offering a dependable fastening option across multiple platforms. The kit's robust construction and heat-treated properties help support increased safety margins and long-term reliability, making it an excellent choice for both daily drivers and performance builds.

Key Features

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

• Manufactured from ARP's proprietary 8740 chromoly steel, known for its exceptional strength and toughness.
• Heat-treated to a tensile strength of 180,000 psi, providing a significant safety margin over typical Grade 8 hardware.
• Black oxide finish offers corrosion resistance and a sleek, professional appearance.
• Designed with a 12-point (12pt) head for increased torque application and easier installation in tight spaces.
• Available in a wide range of thread sizes, including the 5/16" - 18 size featured in this kit, suitable for various automotive applications.
• Precision-machined to ensure proper fitment and consistent performance.
• Ideal for high-performance and heavy-duty applications where strength and reliability are critical.
• Suitable for use in engine assembly, suspension components, and other critical fastener points.
• Backed by ARP's reputation for quality and engineering excellence, ensuring peace of mind during installation and operation.

Construction & Design

The ARP 12pt Hardware Kit is constructed from ARP's renowned 8740 chromoly steel, a material selected for its superior strength-to-weight ratio and durability. Each fastener is meticulously heat-treated to achieve a tensile strength of 180,000 psi, ensuring they can withstand the stresses of high-performance driving and demanding environments. The black oxide finish not only enhances corrosion resistance but also provides a professional, finished look.

The 12-point head design allows for increased torque application and better grip in tight or hard-to-reach areas, reducing the risk of stripping or rounding off the fastener during installation. Precision machining ensures a perfect fit, promoting even load distribution and reducing the likelihood of fastener failure. These features collectively contribute to a reliable, long-lasting fastening solution that maintains integrity under extreme conditions.

Installation & Fitment

The ARP 12pt Hardware Kit is designed for straightforward, bolt-on installation. Its precise machining and standardized thread sizes ensure compatibility with a wide range of automotive components. No special tools beyond standard wrenches are required, and the 12-point head design facilitates easier tightening and loosening in confined spaces. These fasteners are suitable for use in engine assemblies, suspension mounting points, and other critical areas where high-strength hardware is essential.

Because these bolts are engineered to meet or exceed OEM specifications, no additional modifications or tuning are typically necessary. Always verify thread compatibility and torque specifications before installation to ensure optimal performance and safety.

What's Included

• Complete set of ARP 12pt chromoly bolts in the specified thread size (5/16" - 18)
• All necessary hardware components for installation
• Comprehensive instructions for proper torque and installation procedures

Ideal For

• Performance automotive builds requiring high-strength fasteners
• Engine assembly and modification projects
• Suspension and chassis upgrades
• Marine and trailer applications demanding durable hardware
• Enthusiasts seeking reliable, professional-grade fasteners for daily or race use