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ARP Bolts ARP Oldsmobile 455 Head Stud Kit 7/16 in. 8740 Chromoly Black Oxide Finish - 185-4001

If you're diving into a project with your Oldsmobile 455, you might want to check out the ARP Oldsmobile 455 Head Stud Kit. Trust me, these aren't just any head studs; they’re the kind of pieces that can make a real difference under the hood. The fastener style here is a stud, specifically designed to give you that solid, reliable hold you need when pushing your engine to its limits.

Now, the thread size is 7/16 inches, which makes it compatible with a range of setups. No undercut studs here, so you can count on a straightforward installation. The hex head style is pretty standard, but it gives you the leverage you need when tightening things down. And let’s talk material—these bad boys are made from 8740 chromoly. That’s some tough stuff, folks. It’s known for its strength and durability, which means you can trust them not to let you down when the going gets tough.

The black oxide finish isn’t just for looks; it helps with corrosion resistance, so you won’t be worrying about rust creeping in after a few runs. Plus, this kit comes with washers included, which is a nice touch. You won't have to hunt around for those little extras when you’re deep into your build.

One thing to note, though—these studs are cut to fit, so you’ll want to make sure you’ve got the right setup for your engine. But if you’re looking for reliability and performance, this ARP kit is a solid choice. It’s the kind of upgrade that can give you peace of mind when you’re out on the road or tearing up the track.

Other Part Numbers:
ARP Bolts #arp185-4001

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⚠ WARNING: Cancer and Reproductive Harm
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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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