ARP 12pt Hardware Kit

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

Part #: 674-1011

Overview

The ARP 12pt Hardware Kit is a premium-quality fastener solution designed for automotive enthusiasts, builders, and professionals who demand strength, durability, and reliability in their assembly projects. Whether you're installing engine components, securing trailer parts, or working on marine applications, this hardware kit provides the robust fastening power needed to ensure safety and performance.

Constructed from high-grade materials and engineered for precision, these bolts are ideal for those seeking to upgrade from standard hardware or to complete a professional-grade assembly. With ARP's reputation for quality and innovation, this kit helps support your vehicle or equipment's integrity under demanding conditions, giving you confidence in every drive or operation.

Key Features

The ARP 12pt Hardware Kit offers a range of features tailored for high-performance and heavy-duty applications:

• Manufactured from specially heat-treated 8740 chromoly steel, providing exceptional strength and toughness for demanding environments.
• Black oxide finish enhances corrosion resistance and provides a sleek, professional appearance.
• Nominally rated at 180,000 psi tensile strength, offering a substantial safety margin over standard Grade 8 hardware, ideal for critical fastenings.
• Designed with a 12-point (12pt) head configuration, allowing for increased torque application and easier installation in tight spaces.
• Available in a wide range of thread sizes, head styles, and options to suit various applications and specifications.
• Precision-machined to ensure proper fitment and consistent performance across all fasteners.
• Suitable for use on cars, boats, trailers, and other equipment requiring high-strength fasteners.
• Backed by ARP's industry-leading quality control and manufacturing standards, ensuring reliability and longevity.
• Perfect for custom builds, restorations, or upgrading existing hardware to meet or exceed OEM standards.

Construction & Design

The ARP 12pt Hardware Kit is crafted from 8740 chromoly steel, a material renowned for its high tensile strength and durability. The fasteners undergo a specialized heat treatment process that enhances their mechanical properties, making them capable of withstanding extreme loads and harsh environments. 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 and better grip in confined spaces, reducing the risk of stripping or rounding off the fastener head during installation or removal. Each bolt is precision-machined to exact specifications, ensuring a perfect fit and consistent performance, whether used in high-performance engines, suspension components, or trailer assemblies.

Performance & Reliability

Designed for high-stress applications, these chromoly bolts deliver exceptional strength and safety margins. Their tensile rating of 180,000 psi ensures they can handle significant loads, making them suitable for critical fastening points where failure is not an option. The heat treatment and material selection contribute to long-lasting performance, even under vibration, thermal cycling, and corrosive conditions.

Installation & Fitment

The ARP 12pt Hardware Kit is a bolt-on solution that requires no special tools beyond standard wrenches or sockets. Its precise threading and head design facilitate straightforward installation, and the high-quality materials ensure that the fasteners maintain their integrity over multiple uses. Always follow torque specifications recommended for your application to ensure optimal safety and performance. No cutting, drilling, or additional modifications are necessary for most standard uses.

• Designed for universal fitment across a wide range of automotive, marine, and trailer applications.
• Ideal for custom builds, restorations, or upgrading existing hardware to high-performance standards.

What's Included

• Complete set of high-strength M12 x 1.5 chromoly bolts in various lengths and head styles as specified.
• All necessary hardware components for installation, including nuts and washers if applicable.
• Instruction sheet with recommended torque specifications and installation tips.

Ideal For

• Automotive enthusiasts and professionals seeking durable, high-strength fasteners for engine, suspension, or chassis assembly.
• Marine and trailer builders requiring corrosion-resistant hardware capable of withstanding harsh environments.
• Restorers and custom builders aiming for OEM-level quality and safety margins.