Dorman Products, Inc. engages in the supply of automotive replacement parts, fasteners and service line products for the automotive aftermarkets. Its products are divided into four major classes: Power-train, Automotive Body, Chassis and Hardware. The Power-train product line includes intake and exhaust manifolds, cooling products, harmonic balancers, fluid lines, fluid reservoirs, connectors, 4 wheel drive components and axles, drain plugs, and other engine, transmission and axle components. The Automotive Body products include door handles and hinges, window lift motors, window regulators, switches and handles, wiper components, lighting, electrical, and other interior and exterior automotive body components. The Chassis products include brake hardware and hydraulics, wheel and axle hardware, suspension arms, knuckles, links, bushings, and other suspension, steering and brake components. The Hardware products include threaded bolts, auto body and home fasteners, automotive and home electrical wiring components, and other hardware assortments and merchandise. Dorman Products was founded by Steven L. Berman in October 1978 and is headquartered in Colmar, PA.