ZF is a global leader in driveline and chassis technology as well as active and passive safety technology. The ZF Aftermarket Division ensures that ZF's systems expertise is carried forward consistently into the aftermarket. With integrated solutions and the comprehensive ZF product portfolio, the division ensures the performance and efficiency of vehicles throughout their entire lifecycle. Company’s Aftermarket provides services for Passenger Cars and Light Commercial Vehicles, Off-Highways, Trucks and Buses, and Motorcycles.

DENSO International America, Inc. supplies advanced automotive technology, systems, and components. The Company product line includes; radiators, fuel pumps, heating, ventilation, air conditioners, instrument clusters, electronic fuel injection, and wiper systems.

Continental Automotive Systems US, Inc. was founded in 2002 and is based in Auburn Hills, Michigan. It has locations in Europe, North America, South America, Australia, Asia, and Africa. Continental Automotive Systems US, Inc. operates as a subsidiary of Continental Automotive GmbH. The major product line of the company is; advanced driver assistance systems, electronic brakes; stability, tires, foundation brakes, chassis systems, safety electronics, telematics, powertrain electronics, injection systems & turbochargers.

Lear Corporation is a leading Tier 1 supplier to the global automotive industry. The company supplies seating, electrical distribution systems, and electronic modules, as well as related sub-systems, components, and software, to all the world's major automotive manufacturers. Lear has 261 manufacturing, engineering and administrative locations in 39 countries and is continuing to grow their business in all automotive producing regions of the world, both organically and through complementary acquisitions. Lear's manufacturing footprint reflects more than 145 facilities in 22 low-cost countries.

Having established a regional presence in 1906 in North America, the Bosch Group employs 35,000 associates in more than 100 locations, as of December 31, 2018. According to preliminary figures, in 2018 Bosch generated consolidated sales of USD 14.5 billion in the U.S., Canada, and Mexico. Bosch aftermarket product line includes Powertrain solutions; chassis systems controls; electrical drives, car multimedia, electronics, steering systems & battery technology.

Flex-N-Gate manufactures and distributes plastics, metals and mechanical assemblies and systems for the automotive industry. Flex-N-Gate's headquarters is in Warren, Michigan. Flex-N-Gate 2018 revenue was expected to be USD7.5 billion. The company has around 3,000 employees. The main aftermarket product line of the company is; Interior & exterior plastics, metal bumpers & hitches, structural metal assemblies, forward & signal lighting, mechanical assemblies, prototyping & sequencing. Flex-N-Gate transformed itself from an after-market parts producer to an original equipment manufacturer. The company expanded by acquiring businesses including mechanical assembly supplier Ventra Group Inc. in 2001, the bumper business from Meridian Automotive Systems in 2009 and a headlamps and taillights business from Ford Motor Co.

Aisin U.S.A., Inc. founded in 1970. In 1988, Aisin America, Inc. was founded. In 1992, Aisin U.S.A., Inc. merged with Aisin America, Inc. to form Aisin World Corp. of America. AISIN provides customers with innovative products of unparalleled quality for aftermarket and service requirements. Company's main product line is; Body, brake & chassis systems, automatic transmission fluid, coolant, electronics, drivetrain & engine components.

Adient plc is based in Dublin, Ireland. The company operates in the Americas, Europe, China, and internationally. Adient US LLC was formerly known as Johnson Controls Interiors LLC. The company was incorporated in 1997 and is based in Plymouth, Michigan. Seating & seating systems & components are the main products of the company.

American Axle & Manufacturing, Inc. (AAM), Headquartered in Detroit, AAM has over 25,000 associates operating at nearly 90 facilities in 17 countries to support their customers on global and regional platforms with a focus on quality, operational excellence, and technology leadership. AAM designs, tests and validates components to the vehicle manufacturer’s exact specifications. Company's manufacturing operations - from heat treating and sealing to gear cutting - use proprietary processes and methods. For instance, AAM gear-cutting technology assures that a specific gearbox meets the exact noise vibration- harshness (NVH) characteristics established by the vehicle manufacturer.