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ARP Bolts ARP Holden 308 CID 12 Bolt Hex Head Stud Kit 5/8 Socket Size - 205-4001

So, you’re diving into some serious engine work, huh? If you’ve got a Holden 308 CID under the hood and you’re looking to beef up your setup, you might want to check out the ARP 205-4001 Hex Head Stud Kit. These aren’t just any fasteners; they’re built for the kind of heavy-duty performance that can handle the kind of stress that comes with high-performance builds.

ARP has been in the game since 1968, and they’ve really honed their craft when it comes to race fastener design. This kit is all about strength. The head studs and bolts are engineered to withstand extreme loads, which means you can crank up the power without worrying about your fasteners giving out on you. Seriously, these things are tough.

One of the standout features of this kit is the installation pre-load. What does that mean for you? Well, it’s the amount the fastener is stretched during installation, and with these studs, you’re looking at some pretty high numbers. This means once you’ve got them in, they’re going to hold everything together nice and tight, even under the most demanding conditions.

Now let’s talk specs. You’ll need a 5/8 hex or 3/16 Allen for installation, so make sure you’ve got those tools on hand. And remember, this kit is specifically designed for the 12-bolt head setup, so no mixing and matching with other models—keep it true to the Holden 308 CID.

All in all, if you’re serious about your build and want to ensure everything stays put when you’re pushing your engine to the limits, the ARP Hex Head Stud Kit is a solid choice. It’s built for performance, and it’s got the specs to back it up.

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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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