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ARP Bolts ARP Jeep 4.0L Inline 6 Main Bolt Kit - 2-Bolt, Hex, 180,000 psi Strength - 146-5001

If you're diving into a rebuild or just looking to beef up your Jeep's engine, the ARP Jeep 4.0L Inline 6 Main Bolt Kit is a solid choice. Trust me, these bolts are no joke. With a main bolt style that’s a reliable 2-bolt, they’re designed to keep your engine securely held together under pressure.

Now, let’s talk about the fastener style. We're looking at good old-fashioned bolts here, which means you can easily get a grip with a hex head. No fancy stuff, just straightforward reliability. And while this kit doesn’t come with nuts (so make sure you've got those on hand), it does include washers, which is a nice touch for ensuring a snug fit.

What really sets these bolts apart is their yield strength—180,000 psi. That’s some serious toughness, perfect for the demands of off-roading or high-performance builds. You won’t have to worry about them giving out when you’re pushing your Jeep to the limits.

Just a heads up, this kit doesn’t work with windage trays, so keep that in mind if you're planning to add one. But if you’re looking for a straightforward, dependable main bolt kit for your 4.0L inline 6, this is it. It’s all about keeping things simple and effective, and that’s exactly what you get here.

Other Part Numbers:
ARP Bolts #arp146-5001

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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