What Hyundai WIA makes

Hyundai WIA is a Korean manufacturer of automotive driveline and thermal management components, as well as defense systems. Its automotive business spans three product families.

The Mobility Parts line covers the core driveline: drive axles, all-wheel-drive coupling systems, constant velocity joints, power transfer units (PTU), electronic limited-slip differentials (e-LSD), and engines. The company manufactures petrol engines across multiple displacements (1.4L, 1.6L, 1.8L, 2.0L and larger variants) at plants in Seosan, Pyeongtaek, and Ulsan, as well as at its facility in Rizhao, Shandong, China. Engine and CVJ production has been a core activity since the company's early years.

The Thermal Management System line has grown substantially since 2020. Hyundai WIA produces coolant modules, refrigerant modules, HVAC (heating, ventilation, and air conditioning) units, e-compressors, and integrated thermal management modules that combine these circuits. In July 2025 the company completed development and began mass production of a full HVAC climate-control system, with the Kia PV5 as its first application. Systems for internal combustion engine and hybrid vehicles are scheduled to reach production from 2027 onward.

The Mobility Solution line supplies smart factory automation: assembly lines for powertrain components, body jig systems, logistics robots, parking robots, and collaborative robots. This segment allows Hyundai WIA to sell production infrastructure to third-party manufacturers alongside its own parts.

A fourth segment, Defense Solution, produces artillery systems (including the K9 self-propelled howitzer's components), naval guns, tank guns, and aircraft landing gear. Hyundai WIA holds Korean defense procurement authority (DAPA) certification and supplies the Republic of Korea military. Defense remains a smaller revenue contributor relative to automotive parts, but the company describes it as a strategic long-term commitment.

In July 2025, Hyundai WIA completed the sale of its Machine Tools division to the SMAC/Lilson Private Equity consortium for approximately KRW 340 billion. Financial results from 2022 onward present the machine tools business as a discontinued operation under K-IFRS, which is relevant context when comparing historical revenue figures.

Financial performance

Hyundai WIA's continuing operations generated KRW 8,481.5 billion in revenue for FY2025, a 3.7% increase in Korean won terms over FY2024's KRW 8,181 billion. Operating income for FY2025 reached KRW 204.4 billion, a 2.4% margin, down from KRW 219 billion (2.7% margin) in FY2024. Net income for FY2025 was KRW 164.6 billion, up 27.1% from the prior year, reflecting both improved non-operating income and the discontinued machine tools contribution.

The Berylls by AlixPartners Top-100 study for 2026 places Hyundai WIA at rank 69 by automotive-sector revenue, citing €4,856M for FY2025 against €5,311M in FY2024. The EUR-denominated decline of 8.6% primarily reflects the weaker Korean won against the euro during the period and the removal of machine tools revenue from the automotive perimeter, rather than an organic revenue contraction.

The company carries an AA- credit rating as of 2025, per its own investor materials. It employs approximately 2,903 people as of FY2025 across its automotive, defense, and mobility solution divisions, a figure that reflects the post-divestiture workforce.

A target of KRW 1 trillion in thermal management sales by 2028 has been stated publicly by company leadership, per a February 2025 Partnership Day event.

Ownership and history

Hyundai WIA was established on March 29, 1976, initially as a manufacturer of machine tools and industrial machinery in Changwon, Gyeongnam, South Korea. Over subsequent decades it expanded into automotive powertrain components, becoming a core supplier within Hyundai Motor Group.

The company listed on the Korea Exchange (KRX: 011210) in February 2011. Hyundai Motor Group holds a controlling ownership stake, making Hyundai WIA a captive tier-1 supplier whose primary customers are Hyundai Motor and Kia, though the company also supplies non-captive global automakers.

Headquarters are at 153 Jeongdong-ro, Seongsan-gu, Changwon, Gyeongnam. The company maintains six domestic production sites in Korea (Changwon, Seosan, Pyeongtaek, and Ulsan) plus a research center in Uiwang, Gyeonggi. International facilities include plants in Shandong and Jiangsu (China), Slovakia, Mexico, Alabama (USA), and a newly announced site in Khed City near Pune, India (confirmed April 2025).

Certifications and quality

Per the company's own certification status disclosures, Hyundai WIA holds IATF 16949:2016 across five domestic automotive manufacturing sites, certified by DQS with validity running through 2027. Scopes cover thermal management systems, driveline parts, constant velocity joints, power transfer units, and engine manufacturing.

The Changwon 1 plant additionally holds ISO 9001:2015 (for remaining machine tool and defense-related manufacturing), KS Q 9100:2018 (aerospace scope: landing gear and helicopter systems, valid through 2029), and a Korean defense authority standard (KDS STD-0005-1, valid through 2030) covering artillery, naval guns, and fire control systems.

IATF 16949 is the production part approval process quality management standard required by most OEM customers for automotive components; multi-site certification across five plants reflects program scale.

Known customers

Hyundai Motor Group companies represent the primary documented customer base. Mass production of integrated thermal management and HVAC systems for the Kia PV5 purpose-built vehicle began in July 2025, with the system also confirmed for the successor model of the Hyundai Motor Kona from 2027 onward. The Mexico facility has been confirmed to supply K4 hybrid engines to Kia's Mexico assembly plant beginning January 2026.

Hyundai WIA's investor materials describe supply relationships with "global automakers worldwide," though specific non-captive program details are not disclosed in public filings. The company's positioning within Hyundai Motor Group gives it preferred-supplier access to Hyundai, Kia, and Genesis programs globally. For a broader view of supplier tier structures in automotive, see the LightSource glossary.

Recent news

July 2025 -- Asia Business Daily reported the completed sale of Hyundai WIA's Machine Tools division to the SMAC/Lilson PE consortium for approximately KRW 340 billion, marking the company's formal exit from a business line it had operated since its founding.

July 2025 -- The company entered the automotive air conditioning market for the first time, announcing mass production of an integrated HVAC and cooling module system. The initial application is the Kia PV5; a variant for ICE and hybrid vehicles will follow in 2027, per the company's press release.

December 2025 -- Businesskorea reported that Hyundai WIA's Mexico facility began mass production of K4 hybrid engines in January 2026, expanding the plant's role beyond its earlier gasoline engine work.

Frequently asked questions

What does Hyundai WIA make? Hyundai WIA manufactures automotive driveline components (drive axles, AWD systems, constant velocity joints, PTU, e-LSD), engines, integrated thermal management and HVAC systems, smart factory automation equipment, and defense systems including artillery and naval guns. As of 2025 it no longer produces machine tools following the sale of that division.

Who owns Hyundai WIA? Hyundai WIA is publicly listed on the Korea Exchange (KRX: 011210) and is a subsidiary of Hyundai Motor Group, the South Korean automotive conglomerate that also owns Hyundai Motor, Kia, and Genesis. Hyundai Motor Group holds a controlling stake.

What is Hyundai WIA's revenue? Hyundai WIA reported KRW 8,481.5 billion (approximately USD 6.1 billion) in continuing-operations revenue for FY2025, up 3.7% in Korean won terms from FY2024. The Berylls automotive-sector study cites €4,856M for the same period.

Where is Hyundai WIA headquartered? Hyundai WIA's global headquarters are at 153 Jeongdong-ro, Seongsan-gu, Changwon, Gyeongnam, South Korea. Changwon Plant 1 at this address also serves as the primary production site for thermal management systems, defense products, and mobility solutions.

Who are Hyundai WIA's customers? Hyundai Motor and Kia are the primary documented customers. Confirmed programs include thermal management systems for the Kia PV5 (mass production 2025) and Hyundai Kona successor (2027), and K4 hybrid engines for Kia's Mexico plant (from 2026). The company also supplies "global automakers worldwide" per its investor materials, without naming specific non-captive accounts publicly.

Last verified Sep 2026. Is this your company? Request a correction.