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Spanish As the automotive industry continues to grow, more and more custom auto parts manufacturers are beginning to serve the global automotive market with their high-quality technology. Whether you’re an OEM, a tuning brand, or a product developer, working with a trusted supplier ensures your parts meet exact specifications, safety standards, and market demands. In this article, we explore 20 world-leading custom car parts manufacturers:
| Azienda | Country | Establishment Date | Main Focus Area |
| SCOJET | Cina | 2001 | Precision metal machining, plastic injection, product design, prototyping for auto parts |
| COWTOTAL | Cina | 2008 | Aftermarket auto parts, electrical & engine parts |
| eMachineShop | STATI UNITI D'AMERICA | 1999 | Custom manufacturing, CNC, prototyping for auto parts |
| Robert Bosch GmbH (Bosch) | Germany | 1886 | Automotive systems, electrical, engine components manufacturing |
| Midland Metal Products | STATI UNITI D'AMERICA | 1923 | Custom automotive metal fabrication |
| YIJIN Hardware | Cina | 2003 | Precisione Lavorazione CNC, automotive components |
| Sungplastic | Cina | over 20 years ago | Plastic/metal custom car parts,stampaggio a iniezione |
| DENSO Corporation | Japan | 1949 | Automotive systems, electronics, powertrain |
| Xometry | STATI UNITI D'AMERICA | 2013 | On-demand custom manufacturing, CNC, Stampa 3D for auto parts |
| GN Corporations | Canada | 1965 | CNC machining for automotive/industrial sectors |
| Magna International Inc. | Canada | 1957 | Automotive systems, body, seating, electronics |
| ZF Friedrichshafen AG | Germany | 1915 | Driveline, chassis, active/passive safety systems |
| Neway Precision | Cina | 1995 | Custom auto parts, CNC machining, metal fabrication, injection molding |
| Lear Corporation | STATI UNITI D'AMERICA | 1999 | Automotive seating, electrical systems |
| Flex-N-Gate Corporation | STATI UNITI D'AMERICA | 1956 | Metal/plastic automotive parts, lighting |
| Faurecia (FORVIA) | France | 1914 | Seating, interiors, electronics, clean mobility |
| Continental AG | Germany | 1871 | Tires, electronics, safety, powertrain |
| Cummins Inc. | STATI UNITI D'AMERICA | 1919 | Engines, filtration, power generation manufacturing |
| Brembo S.p.A. | Italy | 1961 | High-performance braking systems manufacturing |
| AMG Industries | STATI UNITI D'AMERICA | 1904 | Automotive metal fabrication |
SCOJET
Paese: Cina
Founded in 2001 and headquartered in Georgia, USA, SCOJET began as a small product design house and has since evolved into a full‑service manufacturing solutions provider. As a leading custom auto parts solution provider in China, SCOJET offers CNC turning/milling, plastic injection molding, pressofusione, stamping, and rapid prototyping for car parts customization.
There are experienced and expert service engineers who can answer all manufacturing-related inquiries in SCOJET. These engineers not only provide professional advice, but also help customers optimize designs, reduce costs and improve the standardization of quality control through DFM (Design for Manufacturability) feedback.
With ISO 9001, IATF 16949, and ISO 13485 certifications, it operates dual‑site production facilities in Ningbo totaling over 20,000 m².
COWTOTAL
Paese: Cina
Established in 2008 in Beijing, China, COWTOTAL is an online manufacturing platform that connects international buyers with Chinese job shops for CNC machining, rapid prototyping, sheet metal fabrication, and low‑volume production.
Leveraging a proprietary quoting engine, Cowtotal provides instant, transparent pricing and lead‑time estimates across materials such as aluminum, stainless steel, titanium, and engineering plastics. Its satellite offices and certified partner network span more than 100 factories across Guangdong, Zhejiang, and Jiangsu provinces.
Focused on automotive, robotics, and industrial equipment sectors, Cowtotal guarantees PPAP compliance for automotive parts and IP protection through NDAs and secure data encryption.
eMachineShop
Country: STATI UNITI D'AMERICA
Launched in 1999 and based in Boston, Massachusetts, eMachineShop pioneered online CNC machining services for hobbyists, engineers, and startups.
Users upload CAD files to the eMachineShop web portal and instantly receive quotes for precision‑machined metal and plastic parts in materials including aluminum, steel, brass, Delrin®, and acrylic.
The company’s purpose‑built facility houses a fleet of CNC mills, lathes, routers, and 3D printers, enabling production runs from a single prototype to mid‑volume batches.
eMachineShop’s clientele spans educational institutions, research labs, prototype developers, and small OEMs; the company’s on‑demand model minimizes inventory costs and accelerates product iteration cycles.
Robert Bosch GmbH (Bosch)
Country: Germany
Founded by Robert Bosch in 1886 in Stuttgart, Germany, Robert Bosch GmbH has grown into one of the world’s leading Tier 1 automotive suppliers and technology innovators.
With more than 420,000 associates in over 60 countries, Bosch’s Automotive Technology division develops powertrain systems (including fuel‑injection, electric drive, and hybrid modules), chassis controls (ABS, ESP®), safety electronics, advanced driver‑assistance systems (ADAS), and connectivity solutions.
Beyond mobility, Bosch is active in industrial automation, consumer goods (home appliances, power tools), and energy services. The company reported over €87 billion in revenue in 2023, driven by substantial R&D investments and a commitment to IoT and electrification.
Midland Metal Products
Country: STATI UNITI D'AMERICA
Established in 1923 and headquartered in Port Washington, Wisconsin, USA, Midland Metal Products is a family‑owned manufacturer specializing in heavy‑duty metal stamping and fabrication for the automotive, agricultural, and construction equipment markets.
Its 200,000 ft² facility features high‑tonnage stamping presses, CNC punching, laser cutting, robotic welding cells, and roll‑forming lines. Midland’s engineering team provides design for manufacturability, progressive die development, and full prototype validation.
The company’s quality management system is ISO 9001 and TS 16949 certified, and it supports just‑in‑time (JIT) and Kanban programs for major OEMs, delivering stamped components such as brackets, chassis parts, and structural assemblies.
YIJIN Hardware
Country: Cina
Founded in 2003 and located in Dongguan, Guangdong Province, China, YIJIN Hardware has established itself as a specialist in high‑precision CNC machining and metal finishing.
Serving the automotive, aerospace, and electronics industries, YIJIN operates over 60 CNC machining centers, including 5‑axis mills and multi‑spindle turning centers.
The company offers end‑to‑end services: rapid prototyping, production tooling, CNC turning/milling, EDM, surface treatments (anodizing, plating, painting), and assembly. Equipped with in‑house metrology labs featuring CMMs and vision systems, YIJIN ensures tight tolerances (± 0.005 mm) and delivers tailored low‑ to medium‑volume automotive components worldwide.
Sungplastic
Country: Cina
Since its founding over 20 years ago in Dongguan, China, Sungplastic has specialized in plastic injection molding and composite prototyping for automotive exterior and interior parts.
With over 100 injection molding machines (ranging from 50 to 3,500 tons), Sungplastic produces bumpers, grilles, trim panels, and functional prototypes using materials like ABS, PC‑ABS, PP, and TPE. The company’s integrated tool shop designs and manufactures molds using high‑grade steel, supported by rapid prototyping via SLA and SLS 3D printing.
Sungplastic maintains IATF 16949 certification and exports to OEMs and tier‑1 suppliers across North America, Europe, and Southeast Asia, offering value‑added services such as painting, assembly, and logistics coordination.
DENSO Corporation
Country: Japan
Formed on December 16, 1949, in Kariya, Japan, DENSO Corporation is a core member of the Toyota Group and one of the largest global automotive suppliers.
DENSO develops and manufactures thermal systems (radiators, air‑conditioners), powertrain control modules, fuel-injection systems, spark plugs, and advanced electronics (ECUs, sensors, inverters).
Operating 200 production bases and research centers in 35 countries, DENSO invests heavily in R&D for electrification, automated driving, and connectivity.
Xometry
Country: STATI UNITI D'AMERICA
Founded in 2013 and headquartered in North Bethesda, Maryland, USA, Xometry is an AI‑driven, on‑demand manufacturing marketplace connecting customers to a vetted network of over 1,000 partner factories across North America and Europe.
Offering CNC machining, sheet metal, 3D printing (SLA, SLS, DMLS), injection molding, and urethane casting, Xometry’s Instant Quoting Engine provides real‑time pricing and lead‑time estimates.
The company supports startups, OEMs, and defense contractors with end‑to‑end production—from rapid prototyping to volume runs—backed by certifications including ISO 9001, AS 9100, and ITAR compliance. Xometry also offers proprietary design analysis tools (like DfM feedback) to optimize parts for manufacturability and cost.
GN Corporations
Country: Canada
Since its founding in 1965 in Airdrie, Alberta, Canada, GN Corporations Inc. has delivered precision CNC machining, metal fabrication, and assembly solutions to aerospace, automotive, defense, and oil & gas industries.
Operating under strict PPAP and NADCAP standards, GN’s 100,000 ft² facility houses 5‑axis machining centers, EDM machines, waterjet cutters, and robotic welding cells. The company’s services include prototyping, low‑ to high‑volume production, secondary operations (heat treatment, coatings), and final assembly.
GN leverages Industry 4.0 practices—such as IoT‑enabled monitoring, digital work instructions, and ERP integration—to ensure traceability, on‑time delivery, and continuous quality improvement.
Magna International Inc.
Country: Canada
Founded in Aurora, Ontario, in 1957 as an auto parts manufacturer, Magna International Inc. has grown into one of the world’s largest automotive suppliers.
Now headquartered in Aurora with major R&D centers in Michigan and Germany, Magna operates 342 manufacturing operations and 109 product development, engineering and sales centers across 27 countries. It offers a broad portfolio—including body exteriors and structures, powertrain systems, seating, interior systems, and complete vehicle assembly.
Magna’s innovations include multi‑material lightweighting, electric vehicle (EV) drivetrains, and advanced driver assistance systems.
ZF Friedrichshafen AG
Country: Germany
Created on August 20, 1915, in Friedrichshafen, Germany, ZF Friedrichshafen AG is a leading global supplier of driveline and chassis technologies, safety systems, and electrification solutions.
ZF employs over 167,000 people at 230 locations in 32 countries. Its product portfolio includes automatic and manual transmissions, axles, steering systems, damping systems, and advanced driver assistance systems (ADAS).
In recent years, ZF has expanded into electric vehicle components—such as e‑axles and power electronics—and active safety solutions. ZF holds numerous patents and collaborates closely with OEMs on integration of mechatronic modules and modular vehicle platforms.
Lear Corporation
Country: STATI UNITI D'AMERICA
Founded as American Metal Products in Detroit in 1917 and rebranded as Lear Corporation in 1999, Lear is a global Tier 1 supplier of automotive seating and electrical distribution systems. Headquartered in Southfield, Michigan, Lear employs over 165,000 associates across 250 locations in 39 countries.
Its seating division develops complete seat systems—frames, mechanisms, cushions, covers—for EVs, ICE vehicles, and commercial trucks, integrating lightweight materials and smart features (heating, ventilation). The electrical division supplies wiring harnesses, power distribution modules, and electronic controls.
Flex-N-Gate Corporation
Country: STATI UNITI D'AMERICA
Founded in 1956 in Urbana, Illinois, Flex‑N‑Gate Corporation has grown into one of North America’s largest independent suppliers of bumpers, fascia systems, lighting assemblies, and structural components. Today, Flex‑N‑Gate operates 62 manufacturing and sales facilities across 15 countries, employing over 35,000 people.
Its capabilities include metal stamping, injection molding, welding, painting, and assembly. Serving OEMs such as Ford, GM, Toyota, and Volkswagen, the company focuses on lightweight materials, integrated lighting systems, and composite applications. Flex‑N‑Gate’s advanced engineering teams collaborate on DfM, CAE simulation, and rapid tooling to expedite vehicle program launches.
Faurecia (FORVIA)
Country: France
Formed in 1914 through the merger of France’s Bertrand Faure and ECIA, Faurecia is now part of FORVIA SE (rebranded in 2023 after merging with Hella). Headquartered in Nanterre, France, it employs over 155,000 people across 300 production sites in 37 countries.
Faurecia’s core activities are seating, interiors (instrument panels, door panels), emissions control technologies (catalysts, filters), and clean mobility (hydrogen systems). The company invests heavily in sustainability, producing lightweight composite materials and circular economy initiatives.
Neway Precision
Neway Precision Works Ltd. was established in 1995 in Dongguan, Guangdong Province, China, evolving from a small 1993 workshop that operated manual lathes and a milling machine to produce precision parts. Today, Neway operates a 30,000 m² facility housing over 60 CNC machining centers, injection presses, die‑casting cells, and additive‑manufacturing platforms.
Specializing in on‑demand custom automotive solutions, it offers precision engine and transmission components, lightweight structural parts, electronic enclosures, and fuel/exhaust system components—and supports rapid prototyping for product development. Certified to IATF 16949 and ISO 9001, Neway provides DFM feedback, PPAP documentation, and just‑in‑time delivery to global OEMs and tier‑1 suppliers.
Continental AG
Country: Germany
Continental AG was established on October 8, 1871, in Hanover, Germany, originally producing rubberized fabrics and tires. Today it is a top‑three global automotive supplier with ~200,000 employees at over 230 locations in more than 60 countries.
Continental’s product portfolio spans tires, brake systems, powertrain and chassis components, vehicle electronics (including ADAS and infotainment), and interior electronics. The company reported €48 billion in revenues for 2023. Continental is recognized for innovations in sensor fusion, software‑defined vehicles, and e‑mobility solutions—such as high‑voltage charging infrastructure and electric drive units.
Cummins Inc.
Country: STATI UNITI D'AMERICA
Founded on February 3, 1919, by Clessie Cummins in Columbus, Indiana, Cummins Inc. has grown into a global power leader, designing, manufacturing, and distributing diesel and alternative fuel engines, electric powertrains, and power generation systems.
Employing over 59,000 people at more than 600 company‑owned and independent distributor locations across approximately 190 countries, Cummins provides engines for trucks, buses, construction equipment, and marine vessels, as well as generators and related parts. The company invests heavily in clean technology—covering LNG, hydrogen fuel cells, and battery‑electric solutions—and reported US $30 billion in revenues in 2023.
Brembo S.p.A.
Country: Italy
Founded on January 11, 1961, in Paladina, Italy, Brembo S.p.A. is a global leader in high‑performance braking systems. Employing over 12,000 people across 24 production and business units on three continents, Brembo designs and manufactures disc brakes, calipers, master cylinders, and brake-by‑wire systems for automotive OEMs, motorsports (Formula 1, MotoGP), and high‑end motorcycle manufacturers.
The company’s engineering centers in Italy, USA, UK, and China focus on lightweight materials (aluminum, carbon ceramic), mechatronics, and brake-by‑wire integration. Brembo reported €3.7 billion in revenues in 2023 and maintains certifications including IATF 16949 and ISO 14001.
AMG Industries
Country: STATI UNITI D'AMERICA
Founded in 1904 as the Akron Metallic Gasket Company in Akron, Ohio, AMG Industries entered the automotive stamping market in 1972. Now headquartered in Mount Vernon, Ohio, AMG operates a 75,000 ft² ISO 9001 facility specializing in precision metal stampings, welded assemblies, and fabricated steel components for the automotive sector.
Its capabilities include progressive die stamping (up to 400 tons), robotic welding, hydroforming, and secondary operations such as plating and painting.
AMG serves domestic OEMs and tier‑1 suppliers, delivering critical chassis brackets, inside door and body structure components, and exhaust system mounts with just‑in‑time delivery and kanban support.
