ARP 12pt Hardware Kit

2010–2025 Universal / Automotive Applications M8 x 1.25 Thread

Part #: 661-1011

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 projects. Whether you're assembling engine components, mounting accessories, or performing custom modifications, these high-strength bolts provide the reliability and durability needed to ensure a secure fit and long-lasting performance. Crafted from top-grade materials, this hardware kit is ideal for those seeking to upgrade their fasteners with components that can withstand demanding conditions.

Perfect for street, racing, off-road, or marine applications, the ARP 12pt Hardware Kit offers peace of mind with its superior tensile strength and heat-treated construction. You’ll get a combination of strength, precision, and corrosion resistance, making it suitable for a wide range of automotive and industrial uses. This kit helps support the integrity of your assembly, ensuring safety and performance under stress.

Key Features

The ARP 12pt Hardware Kit stands out with its advanced design and construction features, including:

• 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 standard Grade 8 hardware.
• Black oxide finish offers corrosion resistance and a sleek appearance, suitable for both functional and aesthetic purposes.
• 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 and head styles to accommodate various applications and preferences.
• Precision-machined threads ensure proper fitment and consistent torque values, reducing the risk of stripping or failure.
• Ideal for use in high-stress environments such as engine assembly, drivetrain components, and custom fabrication projects.
• Engineered to meet or exceed OEM standards, providing a reliable upgrade over generic hardware.
• Suitable for use on cars, boats, trailers, and other machinery requiring high-quality fasteners.

Construction & Design

The ARP 12pt Hardware Kit is constructed from ARP's renowned 8740 chromoly steel, a material celebrated for its exceptional strength-to-weight ratio and durability. Each fastener is meticulously heat-treated to achieve a tensile strength of 180,000 psi, ensuring they can handle high-stress loads without deformation or failure. The black oxide finish not only enhances corrosion resistance but also provides a professional, finished look.

The 12-point head design allows for greater torque application and easier access in confined spaces, making installation more straightforward even in tight engine bays or assemblies. The precision-machined threads guarantee a proper fit, reducing the risk of cross-threading and ensuring consistent clamping force. These design features combine to produce a fastener that is both robust and reliable, capable of withstanding the rigors of high-performance applications.

Installation & Fitment

The ARP 12pt Hardware Kit is a bolt-on upgrade that requires no special tools beyond standard wrenches or sockets. Its precise machining ensures easy installation and removal, making it suitable for both professional mechanics and DIY enthusiasts. The kit is compatible with a wide range of vehicles and applications that utilize M8 x 1.25 threaded fasteners. No cutting, drilling, or special tuning is required, making it a straightforward upgrade to your existing hardware.

• Designed for universal use with automotive, marine, and industrial applications.
• Compatible with any component or assembly requiring M8 x 1.25 fasteners.

What's Included

• Complete set of high-strength M8 x 1.25 bolts with 12-point heads
• All necessary hardware for installation (nuts, washers, etc., if applicable)
• Comprehensive instructions for proper installation and torque specifications

Ideal For

• Engine builders and performance enthusiasts seeking reliable fasteners
• Professionals performing high-stress assemblies in automotive, marine, or industrial settings
• DIYers upgrading or replacing factory hardware with premium-grade components
• Anyone requiring durable, high-tensile fasteners for demanding applications