ARP Rod Bolt Kits

Part #: 118-6401

Overview

The ARP Rod Bolt Kit for 1988-2005 Mazda Miata is a high-performance upgrade designed to enhance the strength and durability of your engine's connecting rods. Crafted from seamless, defect-free 8740 chromoly steel, these bolts are engineered for demanding applications, including stock replacements, circle track racing, marine engines, and drag racing. Whether you're restoring a stock engine or pushing your vehicle to its limits in competition, these bolts provide a reliable solution to withstand high stress and thermal conditions. Their superior material quality and manufacturing process ensure consistent performance, helping to maintain engine integrity under extreme loads and high RPMs.

Key Features

Designed with precision and durability in mind, the ARP High Performance Series connecting rod bolts offer several key benefits:

• Made from high-quality 8740 chromoly steel for exceptional strength and toughness
• Heat-treated before grinding and thread rolling to optimize mechanical properties
• Large underhead radius for increased fatigue life and stress distribution
• Guaranteed to pass magnetic inspection testing for quality assurance
• Suitable for a wide range of applications from stock rebuilds to racing engines
• Designed to help prevent bolt failure during high-stress engine operation
• Manufactured with precision to ensure proper fitment and reliable clamping force

Construction & Design

The ARP rod bolts are meticulously manufactured from seamless 8740 chromoly steel, a material known for its excellent strength-to-weight ratio and fatigue resistance. The bolts undergo a rigorous heat treatment process, which enhances their mechanical properties and ensures long-lasting performance. The large underhead radius is carefully designed to distribute stress evenly, reducing the risk of bolt fatigue and failure during high-performance use.

Driving Feel & Feedback

While primarily a performance upgrade, these bolts contribute to the overall engine reliability, allowing you to push your Mazda Miata with confidence. They help maintain proper engine timing and response by ensuring the connecting rods remain securely fastened under extreme conditions, providing a more consistent and predictable driving experience.

Installation & Fitment

Installation requires proper torque specifications and should be performed by a qualified technician familiar with high-performance engine assembly. Verify fitment against your vehicle's specifications and the part number to ensure compatibility.

What’s Included

The package includes a complete set of ARP high-performance connecting rod bolts designed specifically for 1988-2005 Mazda Miata engines, along with any necessary hardware for installation.