Peterbilt 357/378 Door & Cab Side Acc.

Frequently Asked Questions About Peterbilt 357/378 Door & Cab Side Acc.

What kinds of parts are included in this category?

This category covers exterior door and cab side components for Peterbilt 357 and 378 models, including door handles, hinges, cab moldings, cab side extensions, mirror brackets and mounts, door panels, and related trim and hardware that attach to the door or side of the cab.

Will these parts fit my specific Peterbilt 357 or 378 model year?

Most items are designed to match factory specifications for the 357 and 378 body styles, but cab configurations and production years can vary. Always check the fitment notes listed on each product page, and compare part numbers or measurements against your truck before ordering to confirm a proper fit.

Are these parts made from stainless steel, aluminum, or plastic?

Material varies by part. Many cab side and door trim pieces are stainless steel for durability and corrosion resistance, while some brackets, panels, or interior-facing components may be aluminum or heavy-duty plastic. Check the product description for the specific material used on each item.

Do these components come with a factory finish, or will they need to be painted or polished?

Some parts arrive with a polished or brushed stainless finish ready for installation, while others are sold raw or unfinished and may require painting to match your cab color. Review the finish details on the listing so you know what to expect before it arrives.

How difficult is it to install door and cab side accessories myself?

Installation difficulty depends on the part. Trim pieces, moldings, and handles typically involve basic hand tools and can often be installed in a home garage, while items like hinges or structural cab side extensions may require more mechanical experience or a second set of hands. If a part involves drilling, wiring, or structural mounting, having a service manual or professional installer on hand is a good idea.