Peterbilt 379 Hub Adapters

Frequently Asked Questions About Peterbilt 379 Hub Adapters

What are hub adapters used for on a Peterbilt 379?

Hub adapters are mounted onto the wheel hub and allow you to attach chrome hub covers, lug nut covers, or axle covers without drilling into the hub or wheel itself. They provide the mounting studs or threaded surface needed to secure decorative hub caps, giving you a finished, polished look on the front and rear axles.

Will these hub adapters fit my specific axle and hub configuration?

Hub adapter fitment depends on your axle type, hub bolt pattern, and whether you are outfitting a front steer axle or rear drive axle. Before ordering, check the bolt circle, number of lug positions, and axle spindle size on your truck, and compare them to the specifications listed for each adapter. If you are unsure, have your hub measurements or axle information on hand so you can confirm compatibility with our team before purchase.

What material and finish options are available?

Most hub adapters are made from stainless steel or chrome-plated steel for durability and resistance to road grime, moisture, and corrosion. Stainless steel typically offers better long-term corrosion resistance, especially in areas with heavy road salt exposure, while chrome finishes provide a bright, mirror-like look. Choose based on your climate, maintenance preferences, and the finish that matches the rest of your chrome package.

How do I install a hub adapter, and do I need special tools?

Installation generally involves securing the adapter over the existing hub studs or spindle nut, then attaching your hub cap or cover to the adapter using the provided hardware. Basic hand tools such as a socket set and torque wrench are usually sufficient, but torque specifications should be followed closely to keep the adapter and cover securely seated during operation. If you are replacing an adapter on a drive axle, you may need to remove the wheel or work around the axle nut, so plan for extra time compared to a simple bolt-on front hub.

Can hub adapters be used with any hub cap or cover, or do they need to match?

Not all hub caps and adapters are universally interchangeable. The adapter needs to match the bolt pattern of both your hub and the cover you intend to install, and some covers are designed for specific adapter styles or diameters. When purchasing a new hub cap separately, check that its mounting pattern lines up with the adapter you already have, or buy them as a matched set to avoid fitment issues.