When it comes to building serious engines, ARP Pro Series head studs are the go-to choice for just about every pro engine builder out there. It’s not just hype; these studs are built to handle the kind of power that makes your heart race. Let’s break down why they’re the best in the business.
First off, ARP uses a top-notch 8740 alloy for their studs. This stuff is rated way above your typical "aircraft" quality materials. You can trust that these studs are going to hold up under some serious stress. Each one is heat-treated to a staggering 200,000 psi, which means they’re tough as nails. Unlike other brands that just toss their studs in a basket and hope for the best, ARP takes the time to heat-treat each stud vertically in special racks. This ensures that every inch gets the heat it needs, which translates to performance you can count on.
After that heat treatment, the studs go through a centerless grinding process, making them as straight as possible. We’re talking about precision here—ten tiny cuts to get them just right. This attention to detail means your gaskets and cylinder heads will fit like a glove, which is something you won’t find with those cheaper studs that skip this step.
Now, here’s a cool feature: ARP threads their studs after heat-treating them. This gives them a fatigue strength that’s about ten times better than those that are threaded beforehand—a common shortcut in the industry. Sure, it’s a more costly process and tough on the tools, but the end result is worth every penny. Plus, they offer specially undercut studs for certain engines, which helps balance the stretch between the studs. This means a more consistent clamping force, reducing the chances of blown head gaskets and ensuring your engine seals tight.
These premium heat-treated 8740 chrome moly steel head stud kits cover a wide range of domestic and import applications, so you’re likely to find a set that fits your ride. When you see ARP stamped on each stud, you know you’re getting quality that’s trusted by the best in the racing world.
So if you’re working on a Nissan 240SX, whether it’s the S13 from '89 to '94 or the S14 from '95 to '98, the ARP Head Stud Kit (102-4701) is your best bet for a solid build. You won’t find a better quality stud out there—these are the real deal.
Other Part Numbers:
ARP Bolts #arp102-4701
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1989-1994 Nissan 240SX S13 |
240SX S13 | 1989-1994 |
|
1995-1998 Nissan 240SX S14 |
240SX S14 | 1995-1998 |

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 RacingIf 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.