Truck and bus body builders are the part of the truck and bus industry concerned with the manufacturing, remanufacturing, distribution, retailing, and installation of all parts and accessories for trucks and buses, after the sale of the vehicle by the original vehicle manufacturer or OEM.

Estimated as a $257 billion market in the United States alone, truck and bus body building help keep vehicles properly maintained by providing consumers the choice of where they want their vehicles serviced, maintained or customized.