Illinois is a hub for automotive parts manufacturing, representing companies that create essential components for vehicles. The industry spans small-scale manufacturers to large global enterprises while producing a wide spectrum of products, including brakes, engine parts, and electrical components. With evolving technology, firms are increasingly adopting eco-friendly practices and investing in electric vehicle components. As manufacturing evolves, Illinois positions itself at the forefront of innovation, focusing on efficient production methods to meet the growing demand for high-quality automotive parts, essential for both traditional and new-age vehicles.

This list highlights 22 automotive parts manufacturing companies located in Illinois. Predominantly family-owned or private firms, they range in size from small operations to significant manufacturers employing thousands. Founded between 1909 and 2013, these companies focus on creating critical parts across various automotive sectors, including brakes, filters, and electronics, showcasing Illinois' extensive role in the automotive supply chain.

Continue reading to discover the top automotive parts manufacturing companies in Illinois.

Top 22 Automotive Parts Manufacturing Companies in Illinois

1. Wanxiang America Corporation

• Website: wanxiang.com
• Ownership type: Corporate
• Headquarters: Elgin, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: December 2012
• Founded year: 1993
• Headcount: 1-10
• LinkedIn: wanxiang-america-corporation

Wanxiang America Corporation, founded in 1993 and based in Elgin, Illinois, is a manufacturer of automotive parts, particularly known for its bearings and driveline components. The company serves both automotive manufacturers and industrial clients, providing high-quality parts that are crucial for vehicle production. With a commitment to reducing manufacturing costs and enhancing product offerings, Wanxiang America leverages its global resources to effectively support its customers. As the U.S. subsidiary of Wanxiang Group, one of China's largest automotive components manufacturers, Wanxiang America plays a significant role in the automotive supply chain. Their operations are backed by a strong focus on research and development, ensuring they remain competitive in the evolving automotive market. The company is ISO/TS 16949:2002 certified, which underscores its commitment to quality management in the automotive industry.

2. MAT Holdings, Inc.

• Website: matholdingsinc.com
• Ownership type: Family Owned
• Headquarters: Long Grove, Illinois, United States (USA)
• Employee distribution: India 56%, United States (USA) 41%, Other 4%
• Founded year: 1984
• Headcount: 10001+
• LinkedIn: mat-holdings-inc-

MAT Holdings, Inc., based in Long Grove, Illinois, is a family-owned manufacturing company established in 1984. The company operates in both the automotive and consumer products sectors, providing a wide array of components such as braking systems, suspension products, and outdoor power equipment. MAT Holdings has a significant global footprint, with operations in multiple countries and a workforce of over 13,000 employees. Their automotive division, known as MAT Auto Group, is particularly noteworthy for its production of braking and suspension components for both original equipment manufacturers (OEM) and the aftermarket. The company emphasizes quality and performance in its offerings, with a commitment to research and development that supports innovation in automotive technologies. MAT Holdings also maintains a robust logistics network, enhancing their distribution capabilities across various markets.

3. Midwest Air Technologies, INC.

• Website: midwest-air.com
• Ownership type: Family Owned
• Headquarters: Lincolnshire, Illinois, United States (USA)
• Employee distribution: United States (USA) 50%, China 50%
• Founded year: 1984
• Headcount: 1-10
• LinkedIn: midwest-air-technologies-inc.

Midwest Air Technologies, INC. operates under MAT Holdings, Inc., a company founded in 1984 and based in Lincolnshire, Illinois. It specializes in manufacturing automotive components, particularly focusing on OEM and aftermarket parts. The company produces critical automotive products such as braking systems and suspension components, serving both commercial and passenger vehicle markets. With a global operational footprint, Midwest Air Technologies collaborates with automotive manufacturers and consumers alike, emphasizing quality and innovation in its offerings. The company is part of a larger group that employs over 13,000 people worldwide, reflecting its significant role in the automotive parts manufacturing sector.

4. AISIN Manufacturing Illinois

• Website: aisinillinois.com
• Ownership type: Private
• Headquarters: Marion, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2002
• Headcount: 1001-5000
• LinkedIn: aisin-mfg.-illinois

AISIN Manufacturing Illinois, LLC (AMI) is an automotive manufacturer based in Marion, Illinois, established in 2002. The company focuses on producing components like sunroofs, door handles, and other essential parts for prominent automotive brands such as Toyota, General Motors, Lexus, and Subaru. AMI prides itself on its commitment to quality, having achieved multiple certifications, including ISO 9001 and IATF 16949, which reflect their dedication to maintaining high manufacturing standards. The company operates with a strong emphasis on community involvement, providing job opportunities and engaging in corporate donations. With a workforce of around 280 employees, AMI has grown significantly since its inception, now shipping over 60,000 automotive parts each day. Their operational excellence and focus on quality make them a noteworthy entity in the automotive parts manufacturing sector.

5. Sequoia Automatic, Inc.

• Website: sequoiaweb.com
• Ownership type: Private
• Headquarters: Crystal Lake, Illinois, United States (USA)
• Employee distribution: United States (USA) 66%, Mexico 34%
• Founded year: 1958
• Headcount: 51-200
• LinkedIn: sequoia-automatic

Sequoia Automatic, Inc., based in Crystal Lake, Illinois, is a manufacturer with a focus on high-volume production machining of automotive climate control components. Established in 1958, the company has built a reputation for precision engineering and quality assurance. With over 50 years of experience, Sequoia serves a global clientele, including Tier-1 and Tier-2 suppliers in the automotive climate control sector. Their manufacturing processes are supported by a robust Quality Management System certified to IATF 16949:2016, ensuring that they meet stringent industry standards. The company has achieved a remarkable 9.3 parts per million defect rate and maintains a delivery performance exceeding 99% on-time. This track record reflects their commitment to quality and customer satisfaction, making them a reliable partner in the automotive parts manufacturing industry.

6. Eakas Corporation

• Website: eakas.com
• Ownership type: Private
• Headquarters: Peru, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1990
• Headcount: 51-200
• LinkedIn: eakas-corporation

Eakas Corporation, established in 1990 and located in Peru, Illinois, is an automotive parts manufacturer that specializes in producing both functional and decorative components for vehicles. The company offers a range of services, including engineering, injection molding, painting, chrome plating, and assembly, catering primarily to automotive manufacturers across the United States. Eakas has built a solid reputation as a Tier 1 supplier, known for its commitment to quality and customer satisfaction. Their product lineup includes essential automotive parts such as door handles, body side moldings, and rear-panel garnishes. Eakas operates under stringent quality management systems, holding certifications like ISO 14001:2015 and IATF 16949:2016, which reflect their dedication to environmental standards and quality assurance. The company has also expanded its facilities to enhance production capabilities, indicating a strong presence in the automotive parts sector.

7. Metform

• Website: metformjobs.com
• Ownership type: Private
• Headquarters: Savanna, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1976
• Headcount: 201-500
• LinkedIn: metform-mfcs

Metform, established in 1976 and located in Savanna, Illinois, is a private manufacturing company that specializes in high-quality automotive components. The company focuses on forging machined parts for advanced automotive transmissions and heavy-duty trucks, serving a variety of vehicle manufacturers. Metform prides itself on delivering reliable and critical components that enhance vehicle performance. With a workforce of approximately 201-500 employees, the company is dedicated to continuous improvement and innovation within the automotive parts sector. Their operations not only support the production of vehicles but also contribute to the efficiency and reliability of the automotive supply chain.

8. UCAL Systems, Inc dba AMTEC Precision Products

• Website: ucalsystems.com
• Ownership type: Private
• Headquarters: Elgin, Illinois, United States (USA)
• Employee distribution: United States (USA) 89%, India 11%
• Founded year: 1954
• Headcount: 51-200
• LinkedIn: amtec-precision

UCAL Systems, Inc., formerly known as AMTEC Precision Products, is a manufacturer based in Elgin, Illinois, specializing in precision machined components for various sectors, particularly automotive and aerospace. Established in 1954, the company has a rich history and has evolved to meet the changing demands of the industry. UCAL Systems produces a wide array of components, including those for fuel injection systems, drivetrain assemblies, and hydraulic valves. Their manufacturing capabilities are extensive, featuring in-house machining processes that include turning, milling, and secondary operations like broaching and honing. The company is certified under several quality standards, including ISO 9001:2015 and IATF 16949:2016, which underscores their commitment to quality and efficiency. UCAL Systems serves a broad customer base, including original equipment manufacturers (OEMs) and Tier 1 suppliers, and emphasizes continuous improvement and employee training to maintain high standards in production. With a workforce that is experienced and skilled, UCAL Systems is well-positioned to meet the needs of the automotive industry.

9. Kay Manufacturing Co.

• Website: kaymfg.com
• Ownership type: Private
• Headquarters: Calumet City, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), August 2015
• Founded year: 1946
• Headcount: 201-500
• LinkedIn: kay-manufacturing-company-inc-

Kay Manufacturing Co., based in Calumet City, Illinois, is a precision parts manufacturer that has been operational since 1946. The company specializes in producing high-quality components for various sectors, prominently including automotive and aerospace. With a workforce of around 70 employees, Kay Manufacturing emphasizes innovative manufacturing processes and stringent quality assurance measures. Their capabilities extend to creating tight-tolerance parts, essential for automotive applications, and they have a significant focus on collaboration with clients to ensure on-time and on-budget delivery. The company also engages in continuous improvement practices, such as Kaizen workshops, to enhance cost efficiency and product quality. Their commitment to integrating automation with skilled labor allows them to maintain competitive pricing while ensuring high standards of production.

10. Mattoon Precision Manufacturing, Inc.

• Website: mpmiusa.com
• Ownership type: Private
• Headquarters: Mattoon, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1989
• Headcount: 51-200
• LinkedIn: mattoon-precision-manufacturing-inc.

Mattoon Precision Manufacturing, Inc. (MPMI) is a private automotive parts manufacturer based in Mattoon, Illinois. Established in 1989, the company initially focused on manufacturing air-conditioning compressor parts. Over the years, MPMI has expanded its capabilities to include a wide range of precision components for drivetrain, suspension, braking, and HVAC systems. As a Tier 1 and Tier 2 supplier, MPMI serves some of the most reputable OEMs in the automotive industry, emphasizing quality and reliability in their products. The company has received multiple awards for excellence in quality and delivery from clients such as Toyota and Honda, showcasing their commitment to maintaining high standards. MPMI operates with a focus on sustainability and ethical practices, striving to minimize environmental impact while promoting inclusivity within their workforce. Their strategic location in Central Illinois allows for efficient logistics and shipping, further enhancing their service to customers across the United States.

11. Brake Parts Inc LLC

• Website: brakepartsinc.com
• Ownership type: Corporate
• Headquarters: Mchenry, Illinois, United States (USA)
• Employee distribution: United States (USA) 44%, Mexico 33%, India 20%, Other 4%
• Latest funding: July 2020
• Founded year: 2013
• Headcount: 5001-10000
• LinkedIn: brake-parts-inc

Brake Parts Inc LLC, founded in 2013 and based in McHenry, Illinois, is a manufacturer specializing in brake system components. The company offers a comprehensive range of products, including brake pads, rotors, calipers, and other essential parts for vehicles. Brake Parts Inc is dedicated to ensuring that their products meet or exceed industry standards, emphasizing quality and innovation in their manufacturing processes. They have a global presence, with a significant portion of their workforce located in Mexico, India, and China, reflecting their commitment to serving a broad market. The company has been recognized for its excellence, receiving awards such as the Supplier of the Year from General Motors and the Diamond Award from Uni-Select. This recognition underscores their role as a reliable supplier in the automotive aftermarket.

12. Power Stop LLC

• Website: powerstop.com
• Ownership type: Private Equity
• Headquarters: Bedford Park, Illinois, United States (USA)
• Employee distribution: United States (USA) 95%, United Kingdom (UK) 2%, United Arab Emirates 2%
• Latest funding: June 2015
• Founded year: 1995
• Headcount: 51-200
• LinkedIn: power-stop-llc

Power Stop LLC, based in Bedford Park, Illinois, is an automotive parts manufacturer that has been operational since 1995. The company specializes in brake systems and components, offering a wide array of products such as brake kits, pads, rotors, and wiper blades. Power Stop aims to enhance vehicle performance and safety through its high-quality offerings. The company serves both consumers and businesses, ensuring that its products meet the needs of various vehicles. Power Stop primarily operates through online sales and has established partnerships with retailers and installers to broaden its market reach. With a workforce of around 130 employees, Power Stop continues to be an active participant in the automotive parts industry, focusing on innovation and customer satisfaction.

13. Champion Laboratories

• Website: champlabs.com
• Ownership type: Corporate
• Headquarters: Albion, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: July 2020
• Founded year: 1936
• Headcount: 1001-5000
• LinkedIn: champion-laboratories

Champion Laboratories Inc., based in Albion, Illinois, has been a prominent name in automotive filter manufacturing since its inception in 1936. The company specializes in producing high-quality filtration products tailored for both light-duty and heavy-duty vehicles. Champion Laboratories caters to a wide array of clients, including automotive manufacturers, retailers, and fleet operators, ensuring optimal engine performance and reliability through their products. Their commitment to quality is underscored by a comprehensive Quality Assurance program, which has earned them numerous supplier awards. Champion Laboratories also operates under several well-known brands, such as Champ, Luber-Finer, and PetroClear, and is recognized as one of the largest private label automotive filter suppliers. Their extensive product range includes oil filters, air filters, cabin air filters, fuel filters, and transmission filters, with over 10,000 SKUs available. This broad offering reflects their capability to meet the filtration needs of various vehicles and applications.

14. Connor Manufacturing

• Website: connorms.com
• Ownership type: Corporate
• Headquarters: Itasca, Illinois, United States (USA)
• Employee distribution: Mexico 46%, Malaysia 22%, United States (USA) 20%, Other 13%
• Latest funding: October 2023
• Founded year: 1913
• Headcount: 501-1000
• LinkedIn: connor-manufacturing-services

Connor Manufacturing, established in 1913, is a precision metal fabrication and stamping company based in Itasca, Illinois. With a workforce of around 127 employees, the company operates globally, with manufacturing facilities in the USA, Mexico, China, and Malaysia. Connor specializes in providing high-quality components and assembly solutions tailored for various industries, including automotive, heavy truck, and consumer electronics. In the automotive sector, Connor plays a significant role by supplying essential components such as battery management systems, safety sensors, and wire harnesses. Their advanced manufacturing capabilities include metal stamping, CNC machining, and automated assembly, which are crucial for meeting the stringent demands of automotive OEMs and Tier 1 suppliers. Connor's commitment to quality is underscored by its adherence to ISO 9001 and IATF 16949 standards, ensuring that their products meet the rigorous requirements of the automotive industry.

15. Fabrik Molded Plastics

• Website: fabrikind.com
• Ownership type: Private
• Headquarters: Mchenry, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1980
• Headcount: 201-500
• LinkedIn: fabrik-molded-plastics

Fabrik Molded Plastics, Inc., founded in 1980 and based in McHenry, Illinois, is a private manufacturer specializing in molded plastics tailored for the automotive sector. The company focuses on producing high-quality components, particularly for vehicle lighting applications. Their capabilities include injection molding, scientific plastic injection molding, and custom automation services. Fabrik Molded Plastics serves a range of automotive manufacturers, providing them with reliable and durable parts essential for vehicle safety and functionality. Their projects include the production of injection molded throttle bodies, LED automotive taillight lenses, and insert molded automotive sensors. The company emphasizes quality assurance and adheres to industry standards, ensuring that their products meet the rigorous demands of automotive manufacturing.

16. Dynacast International

• Website: dynacast.com
• Ownership type: Private Equity
• Headquarters: Elgin, Illinois, United States (USA)
• Employee distribution: United States (USA) 28%, Canada 13%, Indonesia 13%, Other 46%
• Latest funding: December 2014
• Founded year: 1936
• Headcount: 5001-10000
• LinkedIn: dynacast

Dynacast International, based in Elgin, Illinois, is a precision component manufacturer that specializes in small engineered components using proprietary multi-slide die casting technology. Founded in 1936, the company has built a reputation for delivering high-quality die casting solutions across various industries, including automotive, aerospace, and consumer electronics. Dynacast serves the automotive sector by providing precision parts that meet stringent industry standards. With 21 manufacturing facilities in 16 countries, Dynacast has a robust global footprint, allowing them to cater to a wide range of customer needs. Their engineering expertise extends to prototyping services, ensuring that they can support clients from the initial design phase through to mass production. Dynacast's commitment to quality and innovation positions them as a relevant player in the automotive parts manufacturing space.

17. Elgin Industries

• Website: elginind.com
• Ownership type: Family Owned
• Headquarters: Elgin, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1919
• Headcount: 51-200
• LinkedIn: elgin-industries

Elgin Industries, based in Elgin, Illinois, is a family-owned manufacturer that has been operational since 1919. The company specializes in producing engine and chassis components for the automotive and heavy-duty vehicle sectors. Their extensive product line includes camshafts, lifters, and various chassis parts, catering to both OEMs and aftermarket professionals. Elgin Industries prides itself on its commitment to quality and innovation, having earned multiple certifications such as TS16949 and ISO14001. The company operates a modern manufacturing facility and has received numerous quality awards from prominent customers, including General Motors, Ford, and Harley-Davidson. With a focus on customer satisfaction and a century of industry experience, Elgin continues to be a trusted supplier in the automotive parts market.

18. WeatherTech

• Website: weathertech.com
• Ownership type: Private
• Headquarters: Bolingbrook, Illinois, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Founded year: 1989
• Headcount: 1001-5000
• LinkedIn: weathertech

WeatherTech, founded in 1989 and based in Bolingbrook, Illinois, is a manufacturer specializing in automotive accessories designed to protect vehicles. The company offers a wide range of products, including custom-fit floor mats, trunk liners, and various other vehicle protection solutions. WeatherTech serves both individual consumers and businesses, emphasizing high-quality materials and craftsmanship. Their products are primarily sold through an online platform, which allows customers to select items tailored to their specific vehicle make and model. The company prides itself on manufacturing in the USA and provides a lifetime limited warranty on many of its products, reflecting its commitment to quality and customer satisfaction. WeatherTech has built a strong reputation in the automotive accessories market, making it a notable player in the automotive parts manufacturing sector.

19. Hendrickson

• Website: hendrickson-intl.com
• Ownership type: Private
• Headquarters: Woodridge, Illinois, United States (USA)
• Employee distribution: United States (USA) 80%, Canada 5%, India 4%, Other 12%
• Founded year: 1913
• Headcount: 1001-5000
• LinkedIn: hendrickson

Hendrickson, based in Woodridge, Illinois, has been a prominent manufacturer in the automotive parts industry since its founding in 1913. The company specializes in heavy-duty suspensions and components tailored for the commercial transportation sector. Their product offerings include mechanical, elastomeric, and air suspensions, along with axle and brake systems. Hendrickson's solutions are designed to improve vehicle performance while minimizing maintenance costs, which is essential for their clientele in the transportation industry. The company serves a global market, with a significant presence in North America, and is dedicated to innovation, as evidenced by their ongoing research and development efforts. Hendrickson's focus on quality and customer service further solidifies its role as a key player in the automotive parts manufacturing industry.

20. DeAmertek Corporation

• Website: deamertek.com
• Ownership type: Private
• Headquarters: Lombard, Illinois, United States (USA)
• Employee distribution: United States (USA) 86%, India 14%
• Founded year: 1977
• Headcount: 501-1000
• LinkedIn: deamertek-corporation

DeAmertek Corporation, based in Lombard, Illinois, is a technology manufacturer that has been active in the automotive components and electronics sector since its inception in 1977. The company specializes in creating advanced solutions aimed at improving vehicle safety and performance. Their product lineup includes Electric Power Assisted Steering (EPS), Adaptive Front Lighting (AFS), and Fuel Delivery Modules (FDM), which are critical for modern vehicles. DeAmertek serves a range of OEM customers, providing tailored solutions that meet specific automotive needs. The company is also engaged in research and development, focusing on innovative technologies such as Advanced Driver Assistance Systems (ADAS). With a workforce that spans the United States and India, DeAmertek maintains a commitment to quality and customer satisfaction, supported by certifications like ISO/IATF 16949 and ISO 9001.

21. Plews and Edelmann

• Website: plews-edelmann.com
• Ownership type: Private Equity
• Headquarters: Dixon, Illinois, United States (USA)
• Employee distribution: United States (USA) 90%, Mexico 10%
• Latest funding: August 2016
• Founded year: 1909
• Headcount: 51-200
• LinkedIn: plews-and-edelmann

Plews and Edelmann, based in Dixon, Illinois, has been a significant player in the automotive parts manufacturing industry since its inception in 1909. The company specializes in power steering components, providing a comprehensive range of products that includes hoses, pumps, filters, and turbocharger oil lines. Their products are designed to meet OEM specifications, ensuring that they deliver high performance and reliability for automotive repair shops and distributors. With a focus on quality, Plews and Edelmann aims to help customers minimize warranty claims and enhance vehicle performance. The company operates a state-of-the-art manufacturing and distribution facility that spans 320,000 square feet, allowing them to maintain a high fill rate for their products. Their commitment to innovation is evident in their Edelmann Elite product line, which features advanced engineering and materials designed to withstand extreme conditions. Plews and Edelmann's dedication to customer service and product quality positions them as a trusted partner in the automotive parts sector.

22. TCCI Manufacturing

• Website: tccimfg.com
• Ownership type: Private
• Headquarters: Decatur, Illinois, United States (USA)
• Employee distribution: United States (USA) 44%, India 43%, Germany 6%, Other 7%
• Founded year: 2005
• Headcount: 201-500
• LinkedIn: t-cci-manufacturing

TCCI Manufacturing, founded in 2005 and based in Decatur, Illinois, is a private company that specializes in compressor manufacturing. The firm focuses on electric and hybrid vehicle technologies, offering a wide array of compressor products tailored for the automotive and commercial vehicle sectors. TCCI is committed to innovation and sustainability, actively supporting clients in their transition to electrification. Their product lineup includes electric compressors, wobble plate compressors, swash plate compressors, and various other compressor types, alongside advanced testing services and CNC contract machining. TCCI has established itself as a significant player in the compressor market, recognized for its quality and reliability. The company operates globally, with facilities in the United States, India, Germany, and China, reflecting its international reach and operational capabilities.

Automotive Parts Manufacturing Insights: Key Companies in Illinois

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