Seojin Automotive Co., Ltd. is a South Korea-based automotive parts manufacturer primarily engaged in the development, production, and global distribution of powertrain and drivetrain components for internal combustion engine, hybrid, and electric vehicles. Founded in 1966 and headquartered in Siheung-si, Gyeonggi-do, South Korea, the company operates as an integral member of the SECO business group and is publicly traded on the KOSDAQ market under ticker 122690.
The company organizes its business across automotive transmission systems, eco-friendly mobility solutions, and emerging industrial robotics hardware. Its core product portfolio encompasses a comprehensive suite of power transfer mechanisms, including manual and automatic clutch assemblies; clutch discs; clutch covers; clutch release bearings; dual-mass flywheels; flexible and conventional flywheels; drive plates; separator plates; torque converter components; and transmission gear systems. In response to global powertrain electrification, Seojin Automotive engineers and manufactures advanced hybrid powertrain dampers; plug-in hybrid electric vehicle dampers; electric vehicle reduction gear trains; and structural parts for secondary battery systems. The company supplies original equipment manufacturers, most notably Hyundai Motor Company, Kia Corporation, and Hyundai Transys, as well as global Tier-1 automotive system integrators and independent aftermarket distributors across South Korea, North America, Europe, and Asia.
In recent strategic developments, Seojin Automotive has significantly scaled its eco-friendly vehicle operations and diversified into intelligent automation technologies. The company commenced execution on a 10-year, KRW 1 trillion long-term supply agreement with Hyundai Transys spanning 2025 through 2034 to provide medium- and large-scale hybrid dampers for global vehicle architectures, alongside a KRW 150 billion contract with Hyundai Motor Company for plug-in hybrid dampers running through 2031. Broadening its corporate scope beyond traditional automotive mechanics, Seojin Automotive amended its corporate charter to integrate robotics hardware development. Within this initiative, the company established strategic joint development alliances, including a memorandum of understanding with Robros to co-develop humanoid robot hardware systems and a strategic partnership with Twinny to advance autonomous mobile robot manufacturing and international commercialization. Through these ongoing operational shifts and its network of domestic and international consolidated subsidiaries, Seojin Automotive continues to transition its manufacturing capabilities toward electrified vehicle drivetrains and next-generation robotics platforms.