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ARP Bolts 3/8" x 1.000" 12pt Header Bolt Kit - Steel, Black Oxide, Set of 12 - 100-1209

If you're diving into some serious engine work or just need to replace a few worn-out bolts, the 100-1209 ARP 3/8 X 1.000in 12pt Header Bolt Kit is the real deal. These aren't your average fasteners; they’re built for performance and durability, making them a solid choice for any enthusiast who's serious about their ride.

Let’s talk specs. Each bolt features a 3/8-16 thread size, which is pretty standard for many setups, and with a 12-point head style, you get a better grip and more torque without stripping. That’s a game changer when you’re working in tight spaces or dealing with stubborn bolts. The underhead length measures in at a neat 1.000 inches (or 25mm for those who prefer metric), so you know they’ll fit snugly where you need them.

Constructed from high-quality steel and finished with a tough black oxide coating, these bolts are designed to withstand the heat and pressure of your engine while resisting corrosion. Trust me, you don’t want to skimp on fasteners when it comes to your headers; a good set of bolts can make all the difference in performance and reliability.

And hey, you’re not just getting one or two bolts here; this kit comes with a solid set of 12, so you’ll have enough to tackle your project without having to run to the store mid-job. Whether you’re upgrading your headers or just doing some routine maintenance, these ARP bolts are a smart choice that’ll keep your engine running smooth.

Other Part Numbers:
ARP Bolts #arp100-1209

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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