Peterbilt 379 Day Cab Conversion

Frequently Asked Questions About Peterbilt 379 Day Cab Conversion

What exactly is a day cab conversion kit?

A day cab conversion kit is a set of components used to convert a Peterbilt 379 sleeper truck into a day cab configuration. This typically involves removing the sleeper box behind the cab and installing back panels, roof caps, cab extenders, and related trim and mounting hardware to give the truck a finished, factory-style day cab appearance once the sleeper has been removed.

Will this kit fit my specific Peterbilt 379 model year and cab configuration?

Peterbilt 379 trucks were produced over many years and came with different cab heights and roof styles, so fitment can vary. Before ordering, check the cab height, roof type, and frame width on your truck against the specifications listed for the kit, and reach out to our team if you are unsure. Providing your VIN or truck details when ordering helps ensure you get the correct components.

What materials are these conversion panels made from, and what finish options are available?

Day cab conversion panels are commonly made from fiberglass or aluminum, depending on the specific kit. Fiberglass panels are typically sold in a gel-coated or primed finish ready for paint, while aluminum components may be available in raw or finished options. Always confirm the material and finish with the product listing since this affects paint prep, weight, and long-term durability.

Do I need professional installation, or can this be done in my own shop?

Converting a sleeper truck to a day cab is a significant modification that involves cutting, fitting, and sealing body panels, as well as rerouting wiring and possibly relocating fuel lines, air lines, or exhaust components. While experienced fabricators and body shops handle these kits regularly, this is not a simple bolt-on accessory. If your shop does not have body and paint experience with heavy trucks, we recommend having the conversion performed by a qualified commercial truck body shop.

Are there any titling, weight, or inspection considerations after converting to a day cab?

Removing a sleeper compartment changes the overall length, weight, and configuration of your truck, which can affect your title description, registration details, and DOT inspection paperwork in some states. It is a good idea to check with your local DMV or motor carrier authority before or after completing the conversion so your paperwork accurately reflects the updated truck configuration.