ARP Hex Bolt Kits

Applicable for various automotive, marine, and trailer applications

Part #: 661-1003

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, marine, and trailer applications. Crafted from premium materials and heat-treated for enhanced strength, these bolts are ideal for enthusiasts and professionals seeking to ensure the safety and integrity of their assemblies. Whether you're performing engine rebuilds, chassis modifications, or trailer repairs, these ARP bolts deliver consistent performance and peace of mind.

Engineered for those who demand the best, ARP's Hex Bolt Kits help support the structural integrity of critical components, reducing the risk of failure under demanding conditions. Their robust construction and superior tensile strength make them suitable for high-stress environments, ensuring your project maintains its reliability over time. These bolts are perfect for daily drivers, performance builds, or off-road adventures where strength and dependability are paramount.

Key Features

ARP Hex Bolt Kits incorporate several advanced features that set them apart from standard hardware:

• Manufactured from ARP's proprietary 8740 chromoly steel, these fasteners offer exceptional strength and durability for demanding applications.
• Heat-treated to a tensile strength of 180,000 psi, providing a significant safety margin over typical Grade 8 hardware.
• Black oxide finish enhances corrosion resistance and provides a sleek, professional appearance suitable for visible engine bays or chassis components.
• Designed with a flanged hex head for easy installation and removal using standard tools, reducing the risk of stripping or rounding off the fastener head.
• Precisely machined with M8 x 1.25 thread size, ensuring a perfect fit for compatible applications and reducing installation time.
• Underhead length of 30mm offers versatility for various mounting depths and component thicknesses.
• Ideal for use in high-stress environments such as engine assemblies, suspension components, and structural fastenings.
• Manufactured and tested to meet or exceed industry standards for quality and performance, ensuring long-lasting reliability.
• Suitable for use on cars, boats, trailers, and other machinery requiring high-strength fasteners.

Construction & Design

The ARP Hex Bolt Kits are constructed from ARP's renowned 8740 chromoly steel, a material known for its excellent strength-to-weight ratio and toughness. The bolts undergo a proprietary heat-treatment process that significantly enhances their tensile strength, making them capable of withstanding high loads and stresses. The black oxide finish not only provides corrosion resistance but also offers a professional appearance, especially in applications where aesthetics matter.

The flanged hex head design ensures a secure grip with standard tools, minimizing the risk of stripping during installation or removal. The precise machining of the threads and head dimensions guarantees a perfect fit, reducing installation time and ensuring consistent clamping force. The 30mm underhead length provides flexibility for various mounting configurations, making these bolts versatile for multiple applications.

Performance & Reliability

Designed for high-performance and demanding environments, these ARP bolts deliver exceptional strength and durability. Their high tensile rating ensures they can support increased loads and stresses, providing added safety margins over conventional hardware. The heat-treated chromoly construction resists fatigue and wear, maintaining their integrity over many cycles of use. Whether used in engine rebuilds, chassis modifications, or trailer assemblies, these bolts help ensure your components stay securely fastened under challenging conditions.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. They utilize standard M8 x 1.25 threads and feature a flanged hex head for easy tightening with common tools. No special tools or procedures are required beyond typical mechanical work. These bolts are compatible with a wide range of applications, including engine components, suspension parts, and structural assemblies. Always ensure proper torque specifications are followed during installation to maximize safety and performance.

• Easy to install with standard tools
• No cutting, drilling, or special modifications needed
• Suitable for use in high-stress automotive, marine, and trailer applications

What's Included

• Complete set of ARP Hex Bolts with flanged hex heads
• High-strength chromoly construction for maximum durability
• Black oxide finish for corrosion resistance
• Installation instructions (if applicable)

Ideal For

• Automotive enthusiasts performing engine rebuilds or chassis modifications
• Marine applications requiring corrosion-resistant fasteners
• Trailer and heavy-duty equipment assembly
• Professionals seeking high-quality, reliable fasteners for demanding environments

Emissions Note

This product is a high-strength fastener designed for mechanical fastening and does not impact vehicle emissions. It is suitable for use in various applications where safety and durability are required.