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ARP Bolts ARP M11 X 1.25 SS 12pt Nut Kit - Set of 10, Socket Size 13mm - 401-8401

If you're diving into the world of diesel engines, you probably know that the right fasteners can make or break your build. That's where ARP comes in. Since 1968, they've been pushing the envelope on race fastener design, and their experience really shows in their products. These aren’t just any fasteners; they’re engineered to handle some serious stress, which is exactly what you need when you're cranking up the power on your diesel.

Take the ARP M11 X 1.25 (M13 wr) SS 12pt Nut Kit, for instance. This set of 10 nuts is designed with strength in mind, perfect for those high-stakes applications where every detail counts. The 13mm 12-point socket size means you’ll have a solid grip when you’re tightening things down, ensuring that you get the right pre-load. And let me tell you, the pre-load on these bad boys is no joke—it’s all about keeping everything tight and secure under extreme loads.

Whether you're working on a race rig or just want to beef up your daily driver, these fasteners are built to withstand the kind of forces that would make lesser bolts buckle. So, if you’re serious about your build and want to avoid any headaches down the road, ARP is a name you can trust. They’ve been in the game long enough to know what it takes to keep your engine running strong.

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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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