Since its inception in 1968, Automotive Racing Products (ARP) has grown from a humble backyard operation to a leading manufacturer of high-performance fasteners. Founded by Gary Holzapfel, the company initially aimed to solve engine reliability issues for drag racers. Over the decades, ARP has expanded into a sprawling enterprise with over 200,000 square feet of facilities dedicated to research, development, manufacturing, quality control, warehousing, and administration. The business remains family-owned, spanning three generations, and prides itself on producing top-tier products entirely in-house at its Southern California facilities.

The company's commitment to excellence extends beyond fasteners. A unique addition to their headquarters is Hozy’s Grill, a restaurant that reflects the founder's passion for fine dining. Equipped with state-of-the-art testing capabilities, ARP collaborates closely with leading racers and engineers to develop innovative solutions. They also offer free torque wrench calibration services at major racing events, ensuring optimal performance and safety. ARP's dedication to metallurgy and manufacturing techniques ensures their products meet the highest standards, making them indispensable in both racing and automotive industries.

Pioneering Fastener Technology and Quality Assurance

ARP's journey began with addressing the critical need for reliable fasteners in high-stress environments like drag racing. By focusing on premium-grade materials and meticulous manufacturing processes, the company has established itself as a leader in the industry. Their in-house operations cover everything from forging and heat-treating to precision machining and packaging, ensuring unparalleled quality and consistency. ARP's comprehensive product line includes over 5,500 fastener kits designed for various applications, from classic cars to modern engines.

One of ARP's key innovations is the development of Ultra-Torque Fastener Lubricant, which addresses the issue of "preload scatter" caused by inconsistent lubrication. This advanced lubricant delivers consistent preload performance, significantly improving the effectiveness of fasteners. Additionally, ARP uses only the highest grades of metal, including CHQ and SDF, and employs five types of alloys specifically tailored for critical engine components. These materials are subjected to rigorous heat-treating processes and thread rolling techniques that enhance fatigue strength and ensure superior thread engagement. ARP's commitment to using the best possible materials and methods sets them apart from competitors, providing customers with reliable, high-performance fasteners for all types of engines.

Community Engagement and Beyond the Track

Beyond its core business, ARP has made significant contributions to the local community and the broader racing world. The company's Santa Paula facility houses Hozy’s Grill, a restaurant that not only serves as a gathering place but also showcases the founder's culinary heritage. Decorated with a racing theme and staffed by classically trained chefs, Hozy’s Grill offers a unique dining experience featuring top-quality ingredients and an impressive wine selection. This initiative highlights ARP's holistic approach to creating value for its employees and visitors alike.

ARP's involvement in racing extends far beyond product development. As a long-time NHRA major sponsor, they actively support various racing initiatives, including the newly announced "6-Second Club" for Factory X competitors. The company's motto, "Working together, we win races," underscores their collaborative spirit and strong relationships with racers, crew chiefs, and engine builders. At NHRA national events, ARP provides free torque wrench testing services, emphasizing the importance of properly calibrated tools for optimal fastener performance. Through these efforts, ARP continues to foster a culture of innovation, reliability, and community engagement, solidifying its position as a cornerstone of the automotive racing industry.