Find the best Peterbilt 386 aftermarket and custom parts in the business here at 4 State. The Peterbilt 386 semi truck has all the same great features and construction expected from the Peterbilt brand, with one notable addition: the 386 has an innovative design that was developed to help reduce the ongoing operational costs for truck owners. Pete 386's aerodynamic shape and other careful considerations during manufacturing created a high value big rig that offers an unparalleled combination of fuel efficiency, performance, and style. If you want your Peterbilt 386 to be a one-of-a-kind custom truck, just for you, 4 State Trucks has custom parts and accessories to help. We can help you hit the highway in style with our selection of aftermarket bumpers, exhaust, wheels, and more for your Peterbilt 18 wheeler.