ARP 742-1500 Black Oxide 3/8-24 Fine RH Thread 12‑Point Bolt Set of 5

Description

Product Overview

The ARP 742-1500 is a premium-grade bolt engineered for high‑performance automotive applications. Finished in a durable black‑oxide coating, each bolt resists corrosion and maintains its appearance even under extreme temperature fluctuations. The fine right‑hand 3/8‑24 thread provides a precise fit for critical engine components, while the 12‑point UHL (Unified Hexagonal Lug) head offers superior torque transfer and reduces the risk of cam‑out during tightening. Measuring 1.500 inches in length, the bolt is sized to replace OEM fasteners in a variety of engine assemblies, including cylinder heads, intake manifolds, and exhaust headers. The package includes five identical bolts, each accompanied by a matching 3/8‑inch socket and a flat washer, ensuring a complete installation solution straight out of the box. Designed to meet ARP’s rigorous quality standards, these bolts undergo heat treatment and dimensional verification to guarantee consistent performance across every unit.

Beyond the core specifications, the ARP 742-1500 bolt incorporates advanced material science. The alloy composition balances tensile strength with ductility, allowing the fastener to absorb dynamic loads without fracturing. The black‑oxide finish not only provides aesthetic appeal but also acts as a barrier against moisture and chemical exposure, extending the service life of the bolt in harsh engine environments. The included socket is machined to exact tolerances, ensuring a snug fit that eliminates play and maximizes torque efficiency. The washer distributes load evenly across the mating surface, preventing localized stress concentrations that could lead to component deformation. Together, these elements create a comprehensive fastening system that simplifies installation while delivering reliable, long‑lasting performance.

Usage

These bolts are ideally suited for performance enthusiasts who demand reliability during high‑rpm operation and aggressive tuning. Whether rebuilding a classic engine, upgrading a modern powerplant, or assembling a custom exhaust system, the ARP 742-1500 provides the confidence that critical joints will remain secure under increased horsepower and torque. The fine RH thread is compatible with standard automotive hardware, making it easy to integrate into existing builds without the need for specialized tools. The set’s versatility also extends to racing applications, where rapid disassembly and reassembly are common; the 12‑point UHL head allows technicians to apply consistent torque quickly, reducing downtime on the track.

In addition to performance builds, the bolt is an excellent choice for routine maintenance and replacement of worn or damaged fasteners. Its corrosion‑resistant coating ensures that the bolt will not seize or gall when removed after extended service, facilitating easier repairs. The included socket and washer eliminate the need to source additional components, streamlining the repair process for both professional mechanics and DIY hobbyists. For applications such as turbocharger mounts, fuel pump installations, and valve cover assemblies, the ARP 742-1500 offers a balance of strength and precision that exceeds typical aftermarket alternatives.

Why Choose Us

Choosing ARP means selecting a brand with a legacy of engineering excellence and a reputation built on decades of motorsport and automotive success. Every ARP bolt is manufactured in a controlled environment, where temperature, humidity, and machining parameters are meticulously monitored to achieve repeatable results. The company’s commitment to quality is reflected in its extensive testing protocols, which include tensile, shear, and fatigue testing that simulate real‑world operating conditions. This rigorous validation process ensures that each bolt meets or exceeds OEM specifications, providing peace of mind for users who demand reliability.

Our distribution network guarantees that the ARP 742-1500 arrives promptly and in pristine condition, backed by a comprehensive warranty that covers material defects and workmanship. Customer support is staffed by knowledgeable technicians who can assist with installation guidance, torque specifications, and compatibility questions. We also provide detailed documentation, including installation manuals and technical data sheets, to help users achieve optimal results. By partnering with ARP, you gain access to a community of experts and enthusiasts who share best practices and troubleshooting tips, fostering a collaborative environment for continuous improvement.

Beyond the product itself, our commitment to sustainability drives us to source materials responsibly and minimize waste throughout the manufacturing process. The black‑oxide coating is applied using environmentally friendly methods, and our packaging is designed for recyclability. When you purchase the ARP 742-1500, you are not only investing in superior performance but also supporting a company that values long‑term ecological stewardship.

Key Features

• Premium black‑oxide finish resists corrosion and extends bolt lifespan
• Fine RH 3/8‑24 thread ensures precise fit for critical engine components
• 12‑point UHL head delivers superior torque transfer and reduces cam‑out
• Includes matching 3/8‑inch socket and washer for a complete installation kit
• Backed by ARP’s industry‑leading warranty and dedicated customer support

FAQ

What size is the bolt?

The bolt measures 1.500 inches in length, features a 3/8‑24 fine right‑hand thread, and uses a 12‑point UHL head for optimal torque application.

Is the black‑oxide coating durable?

Yes, the black‑oxide coating is specifically formulated to resist moisture, chemicals, and high temperatures, providing long‑term protection against rust and wear.

Can I use these bolts for turbocharger installations?

Absolutely. The ARP 742‑1500’s strength and precise threading make it suitable for securing turbocharger housings, manifolds, and related components in both street and race applications.

Do I need any special tools to install the bolt?

No special tools are required. The set includes a 3/8‑inch socket that fits the 12‑point UHL head perfectly, allowing you to install the bolt with standard hand tools or a torque wrench.

What warranty does ARP provide?

ARP offers a comprehensive warranty that covers material defects and workmanship for the life of the product, ensuring you receive reliable performance and support.