Connecticut's automotive parts manufacturing sector encompasses a range of companies focused on producing components essential for vehicles. From precision engine parts to electronic systems, these firms exhibit a strong commitment to quality and safety in their products. As the industry evolves, many are adapting to technological advancements, including electric vehicle components and smart systems. With a history of innovation and a forward-looking approach, the industry is set to thrive as the demand for efficient, reliable automotive solutions grows globally. It is also a robust contributor to local economies, bolstering jobs and partnerships across related sectors.

The companies listed here vary in size from small manufacturers to corporate giants. Many were established over the past several decades, with founding years ranging from 1936 to 2009. These firms specialize in various automotive components and systems, including precision parts, performance enhancements, and critical safety systems. With headquarters spread across Connecticut, they collectively highlight the state's role as a hub for automotive parts manufacturing. The unique capabilities and innovations offered by these companies position them to meet the evolving demands of the automotive industry while driving local economic growth.

Continue reading to explore Connecticut's top automotive parts manufacturing companies.

Top 19 Automotive Parts Manufacturing Companies in Connecticut

1. Precision Resource, Inc.

• Website: precisionresource.com
• Ownership type: Corporate
• Headquarters: Shelton, Connecticut, United States (USA)
• Employee distribution: United States (USA) 37%, Canada 30%, Mexico 21%, Other 11%
• Latest funding: November 2015
• Founded year: 1947
• Headcount: 1001-5000
• LinkedIn: precision-resource-inc-

Precision Resource, Inc., founded in 1947 and based in Shelton, Connecticut, is a manufacturer that specializes in fineblanking technology. This process allows for the production of high-quality, precision-engineered components that are critical across various industries, including automotive, aerospace, and medical. In the automotive sector, Precision Resource produces a wide range of fineblanked parts, such as powertrain components, safety features, and general hardware. Their operations are supported by over 100 fineblanking presses, making them one of the most capable manufacturers in this niche. The company is committed to quality, adhering to ISO9001 and IATF16949 standards, and continuously seeks to innovate and improve its manufacturing processes. With a global presence that includes facilities in the United States, Canada, Mexico, Slovenia, and China, Precision Resource is well-positioned to serve automotive clients with reliable and efficient solutions.

2. Barden Corporation, The

• Website: bardenbearings.com
• Ownership type: Family Owned
• Headquarters: Danbury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 56%, United Kingdom (UK) 44%
• Founded year: 1942
• Headcount: 201-500
• LinkedIn: barden-corp

Barden Corporation, The, operates under the umbrella of Schaeffler Group USA Inc., a prominent automotive and industrial supplier. Founded in 1942, Barden is based in Danbury, Connecticut, and specializes in high-precision components and systems tailored for engine, transmission, and chassis applications. The company serves a wide array of automotive manufacturers, providing innovative solutions that enhance efficiency and reliability. Barden's commitment to quality and advanced technology is evident in its manufacturing processes and product offerings. As part of Schaeffler, Barden benefits from a global network of resources and expertise, allowing it to remain competitive in the automotive parts sector. The company has a strong presence in North America, with multiple manufacturing plants and R&D facilities, ensuring it meets the evolving demands of the automotive industry.

3. Global Steering Systems, LLC.

• Website: globalsteering.com
• Ownership type: Private
• Headquarters: Watertown, Connecticut, United States (USA)
• Employee distribution: United States (USA) 68%, Poland 27%, Brazil 5%
• Founded year: 2009
• Headcount: 501-1000
• LinkedIn: global-steering-systems-llc-

Global Steering Systems, LLC. is an automotive manufacturer based in Watertown, Connecticut, specializing in steering components for various vehicles, including passenger cars and trucks. Established in 2009, the company has built a reputation for high-quality products that enhance vehicle safety and performance. They collaborate with major automotive brands such as Ford, Jeep, and General Motors, providing essential components that meet rigorous industry standards. Their operations include comprehensive engineering and testing services, ensuring product reliability and compliance. With a workforce of around 166 employees and facilities in the United States, Poland, and Brazil, Global Steering Systems is well-positioned to serve both local and global automotive markets. Their commitment to product safety and performance is evident in their extensive testing protocols, which are designed to meet the demands of modern vehicles, including electric and high-performance models.

4. FCP Euro

• Website: fcpeuro.com
• Ownership type: Venture Capital
• Headquarters: Milford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Latest funding: Series A, $25.0M, October 2023
• Founded year: 1986
• Headcount: 201-500
• LinkedIn: fcp-euro

FCP Euro, founded in 1986 and based in Milford, Connecticut, is an automotive parts retailer that focuses on replacement parts for European vehicles. The company has evolved from a local brick-and-mortar store to a robust online platform, offering over 190,000 Genuine, OE, and OEM parts for brands such as BMW, Volvo, Audi, VW, Mercedes, and Porsche. FCP Euro prides itself on its customer service and quality assurance, providing a Lifetime Replacement Guarantee on many of its products. The company has also developed a significant online presence, including a DIY blog and instructional content on platforms like YouTube, aimed at empowering car owners to maintain their vehicles. Recently, FCP Euro secured $25 million in Series A funding, reflecting its growth trajectory and commitment to expanding its inventory and service capabilities.

5. Moroso Performance Products

• Website: moroso.com
• Ownership type: Private
• Headquarters: Guilford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1968
• Headcount: 51-200
• LinkedIn: moroso-performance-products

Moroso Performance Products, based in Guilford, Connecticut, has been a significant manufacturer and retailer of automotive performance parts since its inception in 1968. The company offers a wide array of products tailored for automotive enthusiasts and professionals alike. Their catalog features engine components, oil pans, and various accessories designed to enhance vehicle performance. Moroso's commitment to quality and innovation has made them a trusted name among both individual consumers and businesses in the automotive sector. They actively participate in the automotive community, providing technical articles and engaging with customers through events and shows. This involvement underscores their relevance and dedication to the industry.

6. HARMAN International

• Website: harman.com
• Ownership type: Corporate
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: India 43%, United States (USA) 14%, China 7%, Other 36%
• Latest funding: $8.0B, November 2016
• Founded year: 1980
• Headcount: 10001+
• LinkedIn: harman-international

HARMAN International Industries, Inc. is an audio electronics company based in Stamford, Connecticut, founded in 1980. The company specializes in designing and engineering connected products and solutions for various sectors, including automotive, consumer electronics, and enterprise applications. In the automotive industry, HARMAN is recognized for its advanced audio products and infotainment systems that enhance the driving experience. Their automotive solutions focus on delivering seamless connectivity, safety, and entertainment, catering to the evolving needs of drivers and passengers. As a wholly-owned subsidiary of Samsung, HARMAN benefits from a robust corporate structure and a strong leadership team. The company has a significant global presence, with a workforce of over 27,000 employees, and has received substantial funding, indicating its financial stability and growth potential.

7. Linal, INC.

• Website: linal.com
• Ownership type: Private
• Headquarters: Windsor, Connecticut, United States (USA)
• Founded year: 1994
• Headcount: 1-10
• LinkedIn: linal-inc.

Linal, INC., founded in 1994 and based in Windsor, Connecticut, is a private manufacturer that specializes in custom components across multiple industries, including automotive, medical, and military. With a small team of around 16 employees, Linal focuses on producing high-quality products such as stampings, wire forms, castings, machined parts, and injection molded items. Their automotive segment caters to both aftermarket and OEM suppliers, providing essential components for various vehicles, including recreational vehicles and military vehicles. Linal emphasizes quality management and efficient logistics to ensure timely delivery and customer satisfaction. Their ISO 9001:2015 registration highlights their commitment to maintaining high standards in their manufacturing processes.

8. Nickson Industries, Inc.

• Website: nickson.com
• Ownership type: Private
• Headquarters: Plainville, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1959
• Headcount: 51-200
• LinkedIn: nickson-industries-inc.

Nickson Industries, Inc., based in Plainville, Connecticut, has been a player in the automotive parts manufacturing industry since its inception in 1959. The company specializes in producing a variety of exhaust hardware products, including brackets, clamps, gaskets, and other essential components for automotive repair shops. With a strong emphasis on innovative design and quality manufacturing, Nickson aims to meet the specific needs of its customers. The company prides itself on its extensive research and development efforts, which have resulted in a significant number of patents, showcasing its commitment to advancing product quality and functionality. Nickson's products are designed to be user-friendly and efficient, addressing common challenges faced by automotive technicians. Their customer base appreciates the reliability and performance of Nickson's offerings, which have been refined over decades of industry experience.

9. Callaway Cars Inc.

• Website: callawaycars.com
• Ownership type: Private
• Headquarters: Old Lyme, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1976
• Headcount: 51-200
• LinkedIn: callaway-cars-inc

Callaway Cars Inc., founded in 1976 and based in Old Lyme, Connecticut, is an automotive manufacturer that specializes in high-performance vehicles and components. The company is well-known for its supercharged cars and performance parts, catering primarily to automotive enthusiasts who seek enhanced performance and unique modifications. Callaway operates through direct sales of both new and pre-owned vehicles, alongside an online store that offers a variety of performance parts and apparel. Their product line includes supercharging kits, exhaust systems, and other performance enhancements for popular models from Chevrolet, GMC, and Cadillac. Callaway's commitment to engineering excellence and customer satisfaction has solidified its reputation in the automotive community, making it a notable player in the automotive parts manufacturing sector.

10. Stewart EFI, LLC

• Website: stewartefi.com
• Ownership type: Private
• Headquarters: Thomaston, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1936
• Headcount: 201-500
• LinkedIn: stewart-efi-llc

Stewart EFI, LLC, founded in 1936, is a private manufacturing company based in Thomaston, Connecticut. The firm specializes in precision metal stamping and contract manufacturing, providing a range of services that include deep drawn components, progressive die stampings, and engineering solutions. Stewart EFI serves various industries, with a significant focus on automotive applications. Their expertise extends to producing high-quality components for airbag systems, braking systems, fuel injection, and more. The company operates multiple facilities, including locations in El Paso, Texas, and a joint venture in Hangzhou, China. Stewart EFI is recognized for its commitment to quality, holding ISO/TS 16949 certification, which is essential for automotive suppliers. Their engineering capabilities and dedication to defect-free manufacturing make them a trusted partner for automotive clients.

11. Metallon Inc.

• Website: metallon.com
• Ownership type: Private
• Headquarters: Thomaston, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1964
• Headcount: 51-200
• LinkedIn: metallon-inc

Metallon Inc., founded in 1964 and based in Thomaston, Connecticut, is a private manufacturer specializing in precision metal stampings. The company produces high-quality stamped parts and assemblies for various industries, with a significant focus on the automotive sector. Metallon is dedicated to meeting customer requirements and expectations, leveraging their expertise in manufacturing processes. They are certified under IATF16949:2016, ISO9001:2015, and ISO14001:2015, which underscores their commitment to quality management and environmental standards. Metallon actively participates in industry events, such as the Design-2-Part shows, to showcase their capabilities and foster partnerships within the automotive industry. Their workforce is experienced, enabling them to tackle complex manufacturing challenges effectively.

12. Stevens Company, Inc.

• Website: stevenscompanyinc.com
• Ownership type: Private
• Headquarters: Thomaston, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1945
• Headcount: 11-50
• LinkedIn: stevens-company-inc.

Stevens Company, Inc., based in Thomaston, Connecticut, has been a player in the custom metal parts manufacturing sector since its founding in 1945. With a workforce of 22 employees, the company specializes in producing a variety of metal components, including eyelets, stampings, and deep drawn parts. Their products cater to several industries, prominently featuring automotive, aerospace, and medical sectors. The company prides itself on its precision manufacturing capabilities, which allow them to meet specific customer requirements effectively. Stevens Company is committed to delivering high-quality products that stand the test of time, leveraging over 70 years of experience in the field. They operate under ISO 9001:2015 certification, ensuring adherence to quality management standards. Their technical expertise and innovative approach enable them to provide tailored solutions for their clients' metal needs.

13. Truelove & Maclean, Inc., A member of SFS

• Website: trueloveandmaclean.com
• Ownership type: Private
• Headquarters: Watertown, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1944
• Headcount: 51-200
• LinkedIn: truelove-and-maclean

Truelove & Maclean, Inc., based in Watertown, Connecticut, has been a significant player in the manufacturing sector since its founding in 1944. The company specializes in deep drawn and progressive die stampings, providing high-quality, precision-engineered components primarily for the automotive and medical industries. With a commitment to customer satisfaction and continuous improvement, Truelove & Maclean has built a reputation for delivering complex components that meet stringent requirements. Their state-of-the-art manufacturing facility spans 100,000 square feet and is equipped with high-speed production equipment, allowing them to maintain efficiency and cost-effectiveness. The company is also recognized for its investment in technology and innovation, ensuring they remain competitive in the market. As a member of SFS Group AG since 2020, Truelove & Maclean benefits from enhanced resources and a broader manufacturing platform, further solidifying its role in the automotive parts sector.

14. The Carby Corporation

• Website: carbycorp.com
• Ownership type: Private
• Headquarters: Watertown, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $903,000, January 2025
• Founded year: 1947
• Headcount: 51-200
• LinkedIn: carby-corporation

The Carby Corporation, founded in 1947 and based in Watertown, Connecticut, is a manufacturer specializing in precision deep drawn metal components. They serve various industries, including aerospace, automotive, communications, and healthcare. Carby is particularly noted for its engineering support, rapid prototyping, and in-house tooling capabilities, which ensure high-quality production of parts. In the automotive sector, Carby produces critical components such as electrical connectors, airbag parts, and fuel system components, all designed to meet stringent quality standards. Their state-of-the-art facility is equipped to handle high-volume production, making them a reliable partner for businesses requiring defect-free parts for mission-critical applications. The company operates under ISO 9001:2015 and AS9100D certifications, reflecting their commitment to quality management. Recently, they received a grant of $902,555, indicating ongoing investment in their operations and capabilities.

15. Century Spring Manufacturing

• Website: centuryspringmfg.com
• Ownership type: Private
• Headquarters: Bristol, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1975
• Headcount: 11-50
• LinkedIn: century-spring

Century Spring Manufacturing, founded in 1975 and based in Bristol, Connecticut, is a private manufacturer that specializes in springs and metal components. The company serves multiple industries, including aerospace, medical devices, and notably, the automotive aftermarket. They provide a range of products such as compression springs, extension springs, torsion springs, and custom metal stampings. Their emphasis on quality and customer service has fostered long-term relationships with clients. Century Spring is known for its innovative solutions, often collaborating with customers to develop custom components that meet specific needs, particularly in high-performance and safety-critical applications. They have also achieved NADCAP accreditation for their heat treatment processes, underscoring their commitment to quality standards in manufacturing.

16. Camerota Truck Parts

• Website: camerota.com
• Ownership type: Private
• Headquarters: Enfield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1960
• Headcount: 51-200
• LinkedIn: camerota-truck-parts

Camerota Truck Parts, based in Enfield, Connecticut, has been a significant player in the automotive parts manufacturing industry since its inception in 1960. The company specializes in drivetrain components, offering a comprehensive range of products including remanufactured and new transmissions, differentials, and steering systems. With a workforce of approximately 67 employees, Camerota serves primarily businesses in the transportation industry, focusing on providing reliable parts and repair services to reduce vehicle downtime. Their operations span multiple locations across the Northeast, ensuring quick service and support for their clients. The company prides itself on maintaining the largest inventory of drivetrain components in the region, which enhances their ability to meet customer demands efficiently. Camerota's commitment to quality is evident through their ISO 9001:2015 certification, which highlights their dedication to high standards in remanufacturing and distribution. Their expertise and extensive product offerings make them a vital resource for businesses relying on heavy-duty and off-highway vehicles.

17. Tollman Spring Company

• Website: tollmanspring.com
• Ownership type: Corporate
• Headquarters: Bristol, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: April 2023
• Founded year: 1945
• Headcount: 51-200
• LinkedIn: tollmanspringcompany

Tollman Spring Company, founded in 1945, is based in Bristol, Connecticut. This corporate entity specializes in manufacturing a variety of springs and metal components, serving multiple industries, including automotive, defense, electronics, and medical. With a workforce of approximately 100 employees, Tollman Spring has built a reputation for precision engineering and advanced manufacturing techniques. Their automotive division supplies components for essential functions such as door locks, ignition systems, and brake components. The company prides itself on its modern production facilities equipped with state-of-the-art machinery, which allows for efficient and high-quality manufacturing processes. Tollman Spring is also committed to sustainability, aligning with global initiatives to reduce environmental impact. They are part of the Lesjöfors Group, which enhances their capabilities and market reach.

18. Engineering Specialties, Inc. (ESI)

• Website: esict.com
• Ownership type: Private
• Headquarters: North Branford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1990
• Headcount: 11-50
• LinkedIn: engineering-specialties-inc--esi-

Engineering Specialties, Inc. (ESI), founded in 1990 and based in North Branford, Connecticut, is a private manufacturing company that specializes in custom metal stamping and assembly services. With a workforce of 11-50 employees, ESI serves multiple industries, including aerospace, automotive, and medical. The company is particularly noted for its precision-engineered components, which are critical in applications where safety and reliability are paramount. ESI employs advanced manufacturing techniques and adheres to strict quality assurance protocols, ensuring that their products meet the rigorous standards required by their clients. Their automotive sector involvement includes the production of components such as knee airbag grommets and seat belt parts, showcasing their capability to deliver high-quality, safety-critical products. ESI's commitment to quality is further evidenced by their IATF 16949:2016 certification, which is specifically tailored for the automotive industry, highlighting their focus on maintaining high standards in manufacturing processes.

19. Westminster Tool

• Website: westminstertool.com
• Ownership type: Private
• Headquarters: Plainfield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $100,000, September 2021
• Founded year: 1997
• Headcount: 11-50
• LinkedIn: westminstertool

Westminster Tool Inc., founded in 1997 and based in Plainfield, Connecticut, is a private manufacturing firm that specializes in injection molding and tooling solutions. With a workforce of approximately 26 employees, the company has carved out a niche in producing high-performance components and molds for several industries, including medical, aerospace & defense, consumer packaging, and notably, automotive. Their focus on precision engineering and customer collaboration allows them to deliver tailored solutions that meet the specific needs of their clients. In the automotive sector, Westminster Tool is involved in the production of instrumentation and complex, small-sized interior components, showcasing their capability to address the technical demands of this industry. The company has also received funding, with a reported grant of $100,000 in September 2021, which supports their ongoing operations and development.

Automotive Parts Manufacturing Insights: Key Companies in Connecticut

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