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ARP Bolts ARP Jeep 4.0L Inline 6 Head Stud Kit, 12-Point, 8740 Chromoly, Black Oxide Finish - 146-4201

ARP 146-4201 Studs: Precision Fastening for Your Performance Build

If you're diving into a serious engine build or just looking for reliable fasteners for your 2020 Subaru WRX, the ARP 146-4201 studs are an essential upgrade. Crafted from 8740 chromoly, these studs offer the strength and durability you need to keep your engine securely assembled, especially when pushing the limits on the track or during spirited drives.

Fitment

The ARP 146-4201 studs are designed specifically for the following vehicles:

  • 2020 Subaru WRX
  • 2019 Subaru WRX
  • 2018 Subaru WRX

These studs are perfect for those who are upgrading their head gaskets or performing a full engine rebuild. They ensure a tight seal and can handle the increased pressure from performance modifications.

Technical Specs

  • Fastener Style: Stud
  • Undercut Stud: No
  • Head Style: 12-point
  • Fastener Material: 8740 chromoly
  • Fastener Finish: Black oxide
  • Washers Included: Yes
  • Cut to Fit: No

Real-World Experience

Subaru WRX owners have shared their experiences after installing the ARP 146-4201 studs. One owner mentioned, "I replaced my stock head studs with these ARP ones during my engine rebuild. The difference in peace of mind is huge; I know my engine is secure even at high boost levels." Another user noted, "These studs fit perfectly and have held up under some serious power increases. I trust ARP for my performance builds."

When it comes to performance upgrades, don't skimp on the details. The ARP 146-4201 studs are a straightforward yet crucial component for any serious WRX owner looking to enhance reliability and performance. With the right fasteners in place, you can focus on what matters most—enjoying the drive.

Other Part Numbers:
ARP Bolts #arp146-4201

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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