If you're diving into the world of Chevy Duramax engines, you’re probably already aware of how crucial every little detail is. That’s where the ARP Chevy Duramax 6.6L LB7 12pt Valve Cover Bolt Kit comes into play. This isn’t just any bolt kit; it’s a solid upgrade for those of us who want to keep our engines performing at their best.
First off, let’s talk about the fasteners. These are 12-point stainless steel bolts that not only look polished but also pack a punch in terms of durability. You know how it is when you’re out there working on your rig—having reliable parts can make or break your day. The 6mm x 1.0 thread size ensures a snug fit, so you won’t have to worry about them coming loose on those bumpy trails or during heavy towing.
And yes, they come with washers included, which is a nice touch. It’s the little things that count, right? You won’t find any hold-down tabs in this kit, but honestly, who needs them when you’ve got a solid setup ready to go? Whether you’re doing a full rebuild or just swapping out the old bolts, this kit is designed to make your life easier.
So, if you’re serious about your Duramax and want to ensure everything is locked down tight under the hood, this ARP kit is worth a look. It’s built for those who know what they’re doing and want to get the most out of their engine. Trust me, you won't regret investing in quality hardware when it comes to your ride.
Other Part Numbers:
ARP Bolts #arp400-7531
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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.