Dorman Products, Inc. supplies replacement and upgrade parts for the motor vehicle aftermarket industry in the United States and internationally. It operates through three segments: Light Duty, Heavy Duty, and Specialty Vehicle. The company offers engine products, including intake and exhaust manifolds, fans, thermostat housings, and throttle bodies; undercar products, such as fluid lines, fluid reservoirs, connectors, 4-wheel drive components and axles, drain plugs, other engine, transmission, and axle components; steering and suspension products consisting of control arms, ball joints, tie-rod ends, brake hardware and hydraulics, wheel and axle hardware, suspension arms, knuckles, links, bushings, and leaf springs, as well as other suspension, steering, and brake components; body products, which include door handles and hinges, window lift motors, window regulators, switches and handles, wiper components, lighting, electrical, and other interior and exterior vehicle body components, including windshields for UTVs; electronics products, such as new and remanufactured modules, clusters and sensors; and hardware products consisting of threaded bolts and auto body fasteners, automotive and home electrical wiring components, and other hardware assortments and merchandise.