ARP Hex Bolt Kits

2011–2025 Subaru Forester / Subaru Impreza / Subaru WRX 10mm x 1.50 Chromoly Hex Bolt Kit

Part #: 662-1005

Overview

The ARP Hex Bolt Kits are high-quality fasteners designed to provide reliable, durable, and precise fastening solutions for a wide range of automotive applications. Crafted from premium materials and engineered for strength, these bolts are ideal for enthusiasts and professionals seeking to upgrade or replace factory hardware with components that offer enhanced safety margins and longevity. Whether you're working on engine assemblies, suspension components, or custom modifications, ARP's hex bolt kits deliver confidence and performance.

Designed for both daily drivers and performance builds, these bolts help ensure your vehicle's critical components are securely fastened under demanding conditions. The M10 x 1.50 metric thread size and flanged hex head provide easy installation and a secure grip, reducing the risk of loosening due to vibration or thermal cycling. With ARP's reputation for quality and precision, you can trust these fasteners to support your vehicle's performance and safety needs.

Key Features

ARP Hex Bolt Kits incorporate several advanced features to meet the demands of automotive enthusiasts and professionals alike:

• Constructed from ARP's proprietary 8740 chromoly steel, these fasteners are heat-treated to achieve a tensile strength of 180,000 psi, providing a significant safety margin over standard Grade 8 hardware.
• The black oxide finish not only enhances corrosion resistance but also offers a sleek, professional appearance suitable for high-performance applications.
• The flanged hex head design ensures a secure grip with a standard wrench or socket, simplifying installation and removal during maintenance or assembly.
• Precisely machined threads and underhead length of 40mm guarantee a consistent fit across various applications, reducing installation time and ensuring proper torque specifications are met.
• Versatile use cases include engine assembly, suspension mounting, and other critical fastening points where strength and reliability are paramount.
• Manufactured to strict quality standards, ARP fasteners are trusted by racers, technicians, and automotive enthusiasts worldwide for their durability and performance.
• These bolts are compatible with a wide range of vehicles and custom builds, making them a versatile choice for your automotive hardware needs.

Construction & Design

The ARP Hex Bolt Kits are meticulously engineered from ARP's proprietary 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and toughness. The heat treatment process enhances the material's tensile strength to 180,000 psi, ensuring the fasteners can withstand high-stress environments without failure. The black oxide coating provides excellent corrosion resistance, extending the service life of the bolts even in harsh conditions.

The flanged hex head design allows for a secure grip with standard tools, reducing the risk of stripping or slipping during installation. The precise machining of the threads and the underhead length of 40mm ensure a consistent and reliable fit across various applications. These design features collectively contribute to the fasteners' durability, ease of installation, and ability to maintain proper clamping force over time.

Performance & Reliability

With a tensile strength of 180,000 psi, ARP's chromoly bolts offer a substantial safety margin over typical Grade 8 hardware, making them suitable for high-performance and demanding applications. Their superior material properties help prevent stretching or elongation under load, maintaining consistent clamping force and ensuring the integrity of your assembly. The black oxide finish not only provides corrosion resistance but also helps prevent galling during installation and removal.

Installation & Fitment

Installing the ARP Hex Bolt Kits is straightforward, thanks to their standard hex head design and precise threading. These bolts are designed to be a direct replacement for OEM hardware or to be used in custom applications where high-strength fasteners are required. No special tools or modifications are necessary, and the bolts can be torqued to manufacturer specifications for optimal performance. Always follow proper torque procedures to ensure safety and reliability.

• Easy bolt-on installation with standard hand tools
• No cutting, drilling, or special modifications required
• Suitable for engine, suspension, and other critical components

What's Included

• Complete set of ARP M10 x 1.50 chromoly hex bolts with black oxide finish
• All necessary hardware for installation

Ideal For

• Automotive enthusiasts upgrading or replacing factory fasteners
• Performance and racing applications requiring high-strength hardware
• Engine builds, suspension work, and custom modifications
• Professionals and DIYers seeking reliable, durable fasteners

Emissions Note

These ARP Hex Bolt Kits are designed for use in automotive applications where high strength and durability are required. They are intended for off-road, racing, or performance use and may not be legal for street use in all jurisdictions. Please verify local regulations before installation.