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Today, ARP’s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine ...

Searching by Make is the best way to get started looking for all the ARP kits you need for your build. Use the “ Search by Make ” menu to select your make. You'll be taken directly to the results page showing all the kits we make that are specifically linked to your make.

A misstep can lead to bolt failure. That's why ARP continually invests in best equipment, technology and personnel. The steps listed below are some of the steps that a given bolt goes through before "ARP" is stamped on the head – your assurance that it has met ARPs rigorous quality standards.

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“ARP”, the ARP logo, Wave-Loc, Perma-Loc, ARP2000, 2000, ARP3.5 and ARP Ultra-Torque are registered trademarks of Automotive Racing Products, Inc. All other trademarks are property of their respective owners.

ARP offers High Performance Series bolts that are made from a premium grade chrome moly and hardened to a nominal tensile strength of 180,000 psi. The Pro Series bolts, originally developed for NASCAR competition, are rated at 200,000 psi.

ARP Stainless gives Stupidbaker the corrosion resistance to survive sitting on the salt for a week and hold everything together at speed. ARP Stainless also gave it the good looks to be the first race car to be named a Mother’s Shine Award Finalist at the SEMA Show.

ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field.

Important: if you have an aftermarket connecting rod with an ARP bolt, please use the chart below to contact the rod manufacturer for the stretch/torque value. The calculation of those values is solely up to the rod manufacturer.