ARP 12pt Hardware Kit

2010–2025 Universal Fitment for Automotive, Marine, and Trailer Applications

Part #: 675-1003

Overview

The ARP 12pt Hardware Kit is a premium fastener solution designed to meet the demanding needs of automotive enthusiasts, builders, and professionals. Crafted from high-quality materials, this bolt kit provides a reliable and durable fastening option for a wide range of applications, including cars, boats, and trailers. Whether you're assembling a performance engine, securing components in a marine environment, or working on trailer modifications, this hardware kit offers the strength and precision you require.

Engineered for those who demand excellence, the ARP 12pt Hardware Kit ensures a secure fit and long-lasting performance. Its robust construction and heat-treated design make it ideal for high-stress environments, providing peace of mind during spirited driving, off-road adventures, or heavy-duty use. With its versatile thread size and high tensile strength, this kit supports your project from start to finish, helping you achieve professional-grade results.

Key Features

The ARP 12pt Hardware Kit is packed with 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, offering a significant safety margin over typical Grade 8 hardware.
• Black oxide finish provides corrosion resistance and a sleek, professional appearance.
• Designed with a 12-point head for increased torque application and easier installation in tight spaces.
• Available in a variety of thread sizes and head styles to suit diverse project needs.
• Ideal for high-performance, marine, and trailer applications where strength and reliability are critical.
• Precision-machined to ensure proper fitment and consistent quality across all fasteners.
• Suitable for use in demanding environments, including exposure to moisture, heat, and vibration.
• Backed by ARP's reputation for quality and engineering excellence, ensuring your hardware performs under pressure.

Construction & Design

The ARP 12pt Hardware Kit features a meticulously engineered design that emphasizes durability and ease of use. Made from ARP's renowned 8740 chromoly steel, these fasteners undergo a proprietary heat-treating process that enhances their tensile strength and toughness. The black oxide finish not only provides corrosion resistance but also reduces glare and adds a professional aesthetic.

The 12-point head design allows for increased torque application, making installation and removal more efficient, especially in tight or hard-to-reach areas. The precision machining ensures a perfect fit with ARP's own tools or standard sockets, minimizing the risk of stripping or rounding off the fastener heads. This kit is engineered to withstand high-stress conditions, providing a reliable fastening solution for critical components.

Performance & Reliability

Designed for high-performance applications, the ARP 12pt Hardware Kit offers exceptional strength and safety margins. Its high tensile rating ensures that your fasteners can support increased loads and stresses without failure. Whether used in engine assembly, suspension mounting, or marine hardware, these bolts deliver consistent performance and peace of mind. The corrosion-resistant finish extends the lifespan of the fasteners, maintaining their integrity even in harsh environments.

Installation & Fitment

The ARP 12pt Hardware Kit is designed for straightforward, bolt-on installation. Its precise dimensions and high-quality machining ensure a snug, secure fit with minimal effort. No special tools beyond standard sockets or wrenches are required. The kit is suitable for a wide range of applications, including automotive, marine, and trailer projects, and can be used with existing hardware or new components. Always follow manufacturer torque specifications for optimal safety and performance.

• Easy to install with common hand tools
• No cutting, drilling, or special modifications required
• Compatible with standard metric fastener sizes

What's Included

• Complete set of ARP 12pt chromoly bolts in specified thread size and length
• Assorted nuts, washers, and hardware necessary for installation (if applicable)
• Instruction sheet for proper installation and torque specifications

Ideal For

• High-performance engine builds
• Marine hardware and boat assembly
• Trailer modifications and repairs
• Heavy-duty automotive applications
• Enthusiasts seeking reliable, professional-grade fasteners

Emissions Note

This product is designed for off-road, racing, or recreational use only and may not be compliant with certain emissions regulations. Please verify local laws before installation for street use.