ARP 12pt Hardware Kit

2010–2025 Subaru Forester / Subaru Outback 3/8˝-16 SAE Bolt Kit

Part #: 642-4250

Overview

The ARP 12pt Hardware Kit is a premium-quality fastener solution designed for automotive enthusiasts and professionals who demand the best in strength, durability, and reliability. Whether you're assembling a high-performance engine, upgrading suspension components, or securing critical parts on your vehicle, this hardware kit provides the confidence and peace of mind you need. Crafted from top-grade materials and engineered for precision, these bolts are ideal for both daily drivers and race applications.

Designed to meet or exceed OEM standards, the ARP 12pt Hardware Kit ensures a secure fit and long-lasting performance. Its versatile design makes it suitable for a wide range of applications across various Subaru models, including the Forester and Outback, from 2010 through 2025. If you're looking for hardware that combines strength, corrosion resistance, and ease of installation, this kit is an excellent choice.

Key Features

The ARP 12pt Hardware Kit offers a range of features that set it apart from standard fasteners:

• Manufactured from high-strength 8740 chromoly steel, providing exceptional tensile strength and durability for demanding applications.
• Heat-treated to a tensile strength of 180,000 psi, offering a significant safety margin over typical Grade 8 hardware, ensuring your components stay secure under stress.
• Black oxide finish enhances corrosion resistance and provides a sleek, professional appearance suitable for engine bays and undercarriages.
• Designed with 12-point (12pt) head configuration for increased engagement and easier installation in tight spaces, reducing the risk of stripping or cam-out during tightening.
• Available in a wide range of thread sizes, head styles, and lengths to accommodate various fastening needs on your vehicle.
• Precision-machined to strict tolerances for a perfect fit and reliable torque consistency.
• Ideal for use in engine assembly, suspension mounting, drivetrain components, and other critical fastening points.
• Compatible with both OEM and aftermarket parts, making it a versatile choice for custom builds and repairs.
• Designed to withstand harsh conditions, including exposure to heat, moisture, and road debris, ensuring long-term performance.

Construction & Design

The ARP 12pt Hardware Kit is constructed from 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and toughness. The fasteners undergo a proprietary heat-treating process that enhances their tensile strength to 180,000 psi, providing a robust safety margin for high-stress applications. The black oxide finish not only adds corrosion resistance but also gives the hardware a sleek, professional look that complements any engine bay or chassis.

The 12-point head design allows for increased torque application and better grip in tight spaces, making installation and removal more straightforward even in confined areas. Each bolt is machined to precise specifications, ensuring a perfect fit and consistent torque values, which is critical for maintaining the integrity of your vehicle's assembly.

Performance & Reliability

Using ARP's high-quality fasteners can help support increased horsepower and torque by providing a secure, reliable connection between critical components. The superior material and manufacturing process reduce the risk of stripping or failure under extreme conditions, giving you confidence during spirited driving or demanding off-road adventures. While these bolts are not designed to increase power directly, their strength and durability contribute to the overall reliability and safety of your vehicle.

Installation & Fitment

The ARP 12pt Hardware Kit is designed for easy, bolt-on installation. Its compatibility with OEM and aftermarket parts means you can replace worn or damaged fasteners without modifications. No cutting, drilling, or special tools are required—simply use standard hand tools to tighten to the manufacturer's specified torque values. Proper torque application is essential to ensure maximum strength and safety.

• Compatible with 2010–2025 Subaru Forester and Subaru Outback models.
• Suitable for various engine, suspension, and chassis applications requiring 3/8˝-16 SAE bolts.

What's Included

• Complete set of 3/8˝-16 SAE bolts in various lengths and head styles
• All necessary hardware for a comprehensive fastening solution
• Installation instructions (if provided)

Ideal For

• Performance enthusiasts building or upgrading Subaru vehicles
• Engine builders and mechanics seeking high-strength fasteners
• Off-roaders and racers requiring reliable, durable hardware
• Anyone looking to replace OEM fasteners with premium-quality ARP hardware for added safety and longevity