Motorcar Parts of America, Inc. manufactures, remanufactures, and distributes heavy-duty truck, industrial, marine, and agricultural application replacement parts in the United States. The company offers rotating electrical products, including alternators and starters; wheel hub assemblies and bearings; and brake-related products comprising brake calipers, brake boosters, brake rotors, brake pads, and brake master cylinders. It also offers turbochargers; test solutions and diagnostic equipment for the pre- and post-production of electric vehicles; combustion engine vehicles; and software emulation of power systems applications for the electrification of forms of transportation. In addition, it offers heavy duty parts, including non-discretionary automotive aftermarket replacement hard parts for heavy-duty truck, industrial, marine, and agricultural applications. It sells its products to automotive retail chain stores and warehouse distributors, as well as various automobile manufacturers for their aftermarket programs and warranty replacement programs in North America. The company was incorporated in 1968 and is based in Torrance, California.