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ARP 400-3213 5/16-24 x 4.000 SS Hex Water Pump Pulley with 2.750in Fan Spacer Stud Kit - 400-3213

If you're diving into some serious diesel work, let me tell you about these ARP fasteners. They've been at it since '68, and their experience really shows. These aren’t just any bolts and studs; they’re built to take a beating. Think about it—when you’re pushing your engine to the limit, you want fasteners that can handle the stress without breaking a sweat. That’s where these bad boys come in.

Take the ARP 5/16-24 X 4.000 SS Hex Water Pump Pulley with a 2.750in Fan Spacer Stud Kit. This kit is all about reliability and strength, designed to keep your water pump securely in place, even when things get hot and heavy. The studs are crafted to withstand those extreme loads that come with high-performance setups. You won’t have to worry about them letting you down when you're pushing your rig hard.

  • Socket Size: 1/2 hex, 1/8 Allen

What’s cool about these fasteners is that they come with a high installation pre-load. This means when you’re screwing them in, they stretch just right, giving you that snug fit that’s essential for keeping everything tight. Plus, the stainless steel construction means they’re not just tough; they also resist corrosion, so you can count on them for the long haul.

Whether you’re a weekend warrior or a full-time diesel enthusiast, these ARP studs are a solid choice. They clear the way for a clean setup, so you can focus on what really matters—getting the most out of your ride without worrying about the little things.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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The Story Behind ARP Bolts

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 Racing

If 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.

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