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ARP M11 x 1.25 12pt Nut Kit for Diesel Fasteners, Socket Size 13mm, 301-8361 - 301-8361

If you're diving into the world of diesel performance, you’ve probably heard of ARP. These guys have been in the fastener game since way back in 1968, and they really know their stuff. I’ve used their products on my own builds, and let me tell you, their fasteners are built to take a beating. Whether you're talking about head studs, main studs, or driveline bolts, ARP has upped the ante with designs that can handle some serious loads.

One of the standout features of ARP fasteners is their ability to handle high installation pre-loads. What does that mean for you? Basically, when you install these fasteners, they stretch a bit, which helps them stay tight even under extreme conditions. This is crucial if you’re pushing your rig to the limits, whether it’s on the track or off-road.

Now, if you’re looking for something specific, check out the ARP M11 x 1.25 (M13 WR) 12pt Nut Kit (part number 301-8361). The socket size is 13mm with a 12-point design, which gives you a solid grip and makes installation a breeze. Trust me, when you’re under the hood trying to get everything just right, you’ll appreciate the little things like that.

In a nutshell, if you want reliable, heavy-duty fasteners that won’t let you down, ARP is the way to go. They’ve been in the business long enough to know what works, and their products reflect that expertise. So, if you’re serious about your build, don’t skimp on the fasteners—pick up a set from ARP and get ready to unleash some serious power.

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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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