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ARP 300-2409 2in Drilled Carburetor Spacer Stud Kit with 5/16" Thread Size, Includes Nuts and Washers - 300-2409

If you're diving into some serious diesel work, you’ll want to check out the ARP 2in Drilled Carburetor Spacer Stud Kit. ARP has been in the game since '68, and they really know how to engineer fasteners that can take a beating. These aren’t your average bolts; they’ve been crafted to withstand the extreme loads that come with high-performance setups. I’ve used these studs in my own projects, and let me tell you, they hold up like a champ.

What sets these fasteners apart is their design. They’ve got a high installation pre-load, which means when you’re tightening them down, they stretch just the right amount to ensure a solid grip without any risk of failure. It’s that kind of reliability you want when you’re pushing your engine to its limits.

Now, let’s talk specs. You’re looking at a 1/2 hex socket size, which makes it easy to work with standard tools. The kit includes four studs with an overall length of 1.250 inches and another four that measure 1.700 inches. Both sets have a thread size of 5/16 inches, so they fit nicely into a variety of applications. Plus, ARP doesn’t skimp on the details—they throw in nuts and washers, so you’ve got everything you need to get started right away.

In short, if you’re serious about your diesel setup, you’ll want fasteners that are up to the task. The ARP 2in Drilled Carburetor Spacer Stud Kit is a solid choice that I can personally vouch for. It’s built for durability and performance, so you can focus on what really matters—getting the most out of your ride.

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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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