If you're diving into some serious engine work on your 2003-2007 Ford Focus, you might want to check out this head stud kit from ARP. I’ve had my hands on these, and let me tell you, they’re not your average fasteners. These studs are made from 8740 chromoly, which is a fancy way of saying they’re tough as nails. You’ll appreciate that when you’re cranking down the head and looking for peace of mind in high-stress situations.
The head style is 12-point, which means you get a solid grip when you’re torquing them down. No slipping or stripping here. Plus, they come with washers included, so you don’t have to hunt around for the right ones. It’s the little things that make a big difference, right? And just to clarify, these studs are not cut to fit, so you can trust they’re designed specifically for your Duratec 2.3L engine.
What I really dig about these studs is the black oxide finish. Not only does it look slick, but it also helps resist corrosion, which is crucial if you’re putting your ride through the wringer. No undercut stud nonsense here; these are built to hold up under pressure. So, if you’re looking to beef up your engine setup, this ARP head stud kit is definitely worth considering. It’s solid, reliable, and ready to help you push your Focus to the next level.
Other Part Numbers:
ARP Bolts #arp151-4204
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2003-2007 Ford Focus |
Focus | 2003-2007 |

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.