Peterbilt 389 Air Tanks, Wraps & Mounting

Frequently Asked Questions About Peterbilt 389 Air Tanks, Wraps & Mounting

What is included in this category?

This category covers air tanks for the Peterbilt 389, along with the decorative wraps (also called sleeves or covers) that dress them up, and the mounting hardware and brackets used to secure the tanks to the frame. These parts are commonly purchased together since a new tank, wrap, or mount often requires the others to complete a clean installation.

Will an air tank wrap fit my specific tank size?

Air tank wraps are designed to match standard tank diameters and lengths, but sizing can vary between manufacturers and tank styles. Before ordering, measure the diameter and length of your existing air tank and compare those measurements to the product specifications listed on each item to confirm a proper fit.

What materials and finish options are available for tanks and wraps?

Air tanks are typically steel or aluminum, while wraps are most often stainless steel and available in polished, brushed, or textured finishes. Some wraps also feature cutouts or drain hole access to match factory tank features. Choosing a finish that matches your existing stainless trim helps maintain a consistent look on your truck.

Do I need special tools or expertise to install a wrap or mounting kit?

Most wraps are designed to install with basic hand tools using clamps, straps, or self-tapping fasteners, and many customers install them without professional help. Mounting brackets for the air tank itself involve more structural work, since they support the weight of the tank and connect to the frame, so if you are unsure about proper torque specs or bracket placement, having a qualified technician handle that portion is recommended.

Are these air tanks and mounts compatible with air brake system requirements?

Air tanks are part of the truck's air brake system, so any replacement tank should match the capacity, fittings, and mounting configuration of the original equipment to maintain proper system function. Wraps and cosmetic covers do not affect brake system performance since they are installed over the exterior of the tank, but you should always verify that a wrap does not obstruct drain valves, fittings, or inspection points required for routine maintenance.