Peterbilt 375/377 Fairings & Steps

Frequently Asked Questions About Peterbilt 375/377 Fairings & Steps

Will these fairings and steps fit my specific Peterbilt 375 or 377 model year?

Fairing and step designs can vary depending on cab configuration and production year, so it is important to check the fitment notes listed on each product page before ordering. If you are unsure whether a part will match your truck, our team can help confirm compatibility using your VIN or chassis details prior to purchase.

What materials are these fairings and steps made from, and how durable are they?

Most fairings are constructed from fiberglass or durable plastic composites, while steps are typically made from aluminum or steel for added strength. Material choice affects both weight and long-term durability, so consider your typical driving conditions, such as exposure to road salt, debris, or extreme weather, when choosing a product.

Do these parts come pre-painted, primed, or unfinished?

Fairings are commonly available in either a gel-coated finish ready for paint or a pre-painted option to match factory colors. Steps are often finished in raw aluminum, painted, or powder-coated. Always check the product description to see what finish is included so you can plan for any additional painting or coating work.

How difficult is it to install a fairing or step, and can I do it myself?

Many fairings and steps are designed for bolt-on installation using existing mounting points, making them manageable for someone comfortable with basic hand tools. However, some fairing kits may require drilling or fabrication depending on the specific mounting bracket setup, so it is a good idea to review the included instructions or ask about installation hardware before you buy.

Will adding these fairings or steps affect fuel efficiency or ground clearance?

Properly fitted fairings are designed to improve aerodynamics, which can have a positive effect on fuel efficiency, while steps are primarily added for safer cab access and generally do not impact ground clearance when installed correctly. If you frequently drive on rough terrain or in low-clearance areas, it is worth double-checking the step design and mounting height before installation.