Motorcar Parts of America Inc is a supplier of automotive aftermarket non-discretionary replacement parts and test solutions and diagnostic equipment. It operate in the non-discretionary automotive aftermarket for replacement hard parts in North America and includes products such as light-duty rotating electrical products, wheel hub products, brake-related products, and turbochargers. In addition, it sell test solutions and diagnostic equipment. The company operates in three segments Hard Parts, Test Solutions and Diagnostic Equipment and Heavy Duty. Key revenue is generated from Hard Parts, which includes (i) light duty rotating electric products such as alternators and starters, (ii) wheel hub products, (iii) brake-related products, including brake calipers, brake boosters, brake rotors.