If you’re diving into the world of diesel performance, you’ve probably heard of ARP. These guys have been pushing the envelope on fastener technology since 1968, and trust me, they know what they’re doing. Their latest offerings in critical diesel fasteners are designed to take some serious abuse. We’re talking head studs, main studs, and driveline components that are built tougher than ever. These fasteners are engineered to handle extreme loads, which means you can push your rig without worrying about the integrity of your setup.
One of the standout products is the ARP 5/16-24 x 3.250 Black Hex Water Pump Pulley with a 2.000in Fan Spacer Stud Kit. This isn’t just another kit on the shelf; it’s a piece of hardware that’s been crafted to perform. The black hex finish not only looks sleek but also adds some durability against the elements. When you install these, you’ll notice the pre-loads are pretty high, meaning these fasteners are stretched just right during installation. That’s crucial because it ensures everything stays snug and secure when you’re really putting your engine through its paces.
Now, let’s talk specs for a second. You’ll need a 1/2 hex or a 1/8 Allen socket to get these bad boys on. It’s a simple install, but don’t underestimate how much difference a solid fastener can make in your setup. Whether you’re hitting the trails or just cruising around town, having reliable fasteners means peace of mind. You’ll be able to focus on enjoying the ride instead of worrying about whether your parts are going to hold up.
So, if you're looking to upgrade your diesel game, don’t sleep on these ARP fasteners. They’ve got the history, the technology, and the performance to back them up. Get ready to take your build to the next level.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

ARP (Automotive Racing Products) was founded by Gary Holzapfel in 1968 when he noticed his drag-racing friends succumbing to bolt-induced engine failure as a result of poor-quality fasteners. He drew upon his expertise in the aerospace industry to develop a solution, which turned into a successful business nonetheless.
Since its inception, ARP has been engineering and perfecting a wide range of bolts, studs, nuts, and other fasteners for engines, cylinder heads, headers, wheels, and transmissions. Today, ARP remains the undisputed world leader in automotive fasteners. Racing aficionados everywhere know and recognize the ARP brand and can vouch for its quality.
What Makes ARP Bolts So Special?Located in Ventura, California, all ARP processes from raw wire to finished fasteners are conducted in-house, right here in the USA. The company continually improves its processes with strict quality control guidelines and is dedicated to producing products that are second to none. Simply put, ARP Bolts are better than the competition because of their quality materials and advanced processes.
ARP prides itself on using only top-quality materials that are above the usual “aerospace-grade” quality that other manufacturers settle for. For example, while 8740 Chromoly steel has four different grades, ARP only uses the top two, SDF and CHQ. These grades cost twice as much as the lower commercial and aircraft grades, but deliver “zero defect” quality that you can trust each and every time.
ARP Bolts are built to withstand serious racing, possess greater tensile strengths, and can survive higher stress levels than most aircraft fasteners. ARP is dedicated to creating fasteners that boast ultimate strength and durability to ensure they last race after race. Its product lineup ranges from quality high-performance OEM parts to exotic specialty hardware for IndyCar, NASCAR, NHRA drag racing, Formula 1, and even marine applications.
Equip Your Ride with ARP Bolts at Vivid RacingIf you are looking to change the fasteners on your car, you’ve come to the right place. No other brand beats out ARP Bolts in terms of strength, quality, and race-proven success. Vivid Racing is, therefore, proud to carry an extensive lineup of products from American Racing Products like bolts, fluids, sealants, hand tools, stud kits, piston sleeves, wheel bolts, and more! If you have any questions regarding the parts above, please call our specialized sales team at (480) 966-3040.