SEGMENTS WHERE GBR PARTS OPERATES Automotive Truck factories and manufacturers and road implements. industrial Industries that use various parts and bearings in their production system. AgriCULTURAL Factories and manufacturers of agricultural implements and machines. Divisions Within the segments where GBR Parts operates, we serve the OEM market and the aftermarket OEM Original Equipment Manufacturer. Wheels, bearings and original parts produced for specific assembly lines. Aftermarket Wheels, bearings, and parts intended for aftermarket companies.