Peterbilt 388 Day Cab Conversion

Frequently Asked Questions About Peterbilt 388 Day Cab Conversion

What does a Peterbilt 388 day cab conversion kit include?

A day cab conversion kit typically includes the back-of-cab panel, roof cap or fairing, and the necessary trim and mounting hardware needed to close off the area where the sleeper box used to be. These components are designed to give the truck a finished, factory-style appearance once the sleeper has been removed.

Will this conversion kit fit my specific Peterbilt 388 configuration?

Fitment can vary depending on the model year, cab height, and roof style of your Peterbilt 388, so it is important to check the listed specifications closely before ordering. If you are unsure whether a kit matches your truck's configuration, reach out to our team with your VIN or cab measurements so we can help confirm compatibility.

Because these are aftermarket panels built to match OEM dimensions, minor trimming or adjustment during installation is sometimes required to achieve a clean fit.

What material are the conversion panels made from, and how durable are they?

Day cab conversion panels are commonly molded from fiberglass or ABS composite material, chosen for its balance of durability and ease of shaping around the cab contours. These materials hold up well to normal highway use, but like any exterior panel, they should be properly sealed and painted to protect against long-term weather exposure.

Do these panels come pre-painted or gel-coated?

Most conversion panels ship in a raw or primed finish and are not pre-painted to match your truck's factory color. This allows the panel to be painted after installation to match your specific paint code, but it also means you should plan for paint and bodywork as part of your overall conversion budget.

Can I install a day cab conversion kit myself, or should I have a body shop do it?

While some experienced DIYers with fiberglass and bodywork experience do complete these conversions in their own shop, most customers have a professional body shop handle the installation and paint matching. Proper fitment, sealing, and structural mounting are important to ensure a clean, long-lasting result, so working with a shop familiar with truck body conversions is generally recommended.