Automotive Racing Products, Inc.

The World Leader in racing fastener technology since 1968

If you're installing our diesel kit, make sure you're using ARP Ultra-Torque™ fastener assembly lubricant

Find the latest on new diesel parts, ARP racer results and a whole lot more...

ARP has dealers all over the world. Please call to make sure they have what you're looking for.

Have a tech question? Looking for a special part or kit? Our support desk can point you in the right direction.

ARP makes more than just diesel fasteners. View, download or request our full catalog today.

ARP has additional Web sites for specific markets in addition to our main site.

View, Download or
Request a Catalog

Web site - always the most current parts. You can view the entire catalog or download the latest version as a PDF.

Printed Catalog - We'll mail you our most recent catalog free of charge.

We Take Quality Seriously

ARP ISO 9001 and AS9100 Certifications

ARP achieved ISO 9001 and AS9100 registration in 2009. These registrations represent ARP's unwavering dedication to producing quality fasteners, continually improving our quality management system and delivering total customer satisfaction.

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Send us your diesel photos

Have a great diesel ride that uses ARP? Email us your photo along with any interesting information. Click here

Do you have suggestions on how we can improve?

As part of our continuous improvement processes, we are always looking for feedback. This might be a suggestion for a new kit or something that we should add to our Web site.

Click here to let us know.

ARP Ultra-Torque™
Fastener Assembly Lubricant

Today's critical diesel fasteners - head studs and bolts, main studs and bolts, and driveline - have been designed stronger than ever before to handle the extreme loads. As a results, installation pre-loads - the amount the fastener is stretched during installation - are very high.

Fastener Assembly Lube Basics:

There are a lot of opinions out there about which fastener assembly lube to use and what the torque value should be. First, let's be clear: ARP provides torque specs for our fasteners based on using ARP Ultra-Torque. If you're not using our specs and our lube, you have no real idea what pre-load you're getting. We've done the testing where we can measure the torque applied and the resulting pre-loads. We've tested with our lube and the others people use...and we've got the results to back it up. (It's not like we're trying to sell more lube - we send you some free in every kit! We just want your installation to be right.)

ARP Ultra-Torque Detail Paper

Technical Support

Questions about which kit to use, torque values or your specific installation.

Hours
M-F 7:30a-4:30p PST
800-826-3045 or
805-339-2200

You can call us or use our online form to submit your question.

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FAQs - Frequently Asked Questions

We've answered several of the most common questions we get. Check here before you call or submit a questions online and you may save yourself some time.

Answers to FAQs