What Weichai America makes

Weichai America Corp is the North American operations hub of the global Weichai engine business, headquartered in Rolling Meadows, Illinois, northwest of Chicago. Its core business is powertrains and power generation: industrial diesel and spark-ignited engines, generator sets, and integrated power systems for demanding applications including data centers, marine, off-road and industrial equipment, oil and gas drilling, and agriculture. The North American lineup is built on three brands: Weichai Power base engines, Moteurs Baudouin marine and power-generation engines, and Power Solutions International (PSI), a Nasdaq-listed maker of emission-certified engines and power systems.

Baudouin, founded in 1918, supplies high-speed diesel engines for critical-power and marine work; in North America, Generac packages the Baudouin M33 and M55 engines at its Oshkosh, Wisconsin plant for the mission-critical and data-center markets. PSI, based in Wood Dale, Illinois, designs and manufactures emission-certified engines and power systems and has ridden strong data-center demand to record results. Weichai Power itself produces engines across a wide power band, from roughly 30 to 12,000 horsepower, and the group's diesel engine output exceeded 780,000 units in 2025. As an OEM engine and power-systems supplier, Weichai America sells parts and service support through a network of OEMs, distributors, and service providers.

Financial performance

Weichai America is a subsidiary of Weichai Power Co., Ltd., which is publicly traded in both Shenzhen (000338) and Hong Kong (2338). For the fiscal year 2024, Weichai Power reported revenue of about RMB 215.69 billion, roughly flat year over year, and net profit attributable to shareholders of RMB 11.4 billion, up 26.5 percent, with return on net assets improving to 13.69 percent. In the first half of 2024 the parent had already grown net profit 51.4 percent on a 6.0 percent revenue increase, per its semi-annual report. A more recent Hong Kong exchange filing put revenue at about RMB 231.8 billion, up 7.5 percent.

The North American engine business shows the same trajectory through PSI. For full-year 2025, PSI reported record net sales of $722.4 million, up 52 percent, and net income of $114.0 million, up 65 percent, with diluted earnings per share of $4.94. PSI's second quarter of 2025 alone reached $191.9 million in sales, up 74 percent, driven largely by data-center power demand. Weichai America itself does not publish standalone financials; the parent and the PSI subsidiary are the published, auditable figures.

Ownership and history

The Weichai lineage runs back to 1946, when the business was founded in Weifang, Shandong, China, as Yucheng Ironworks and quickly moved into diesel engine production. It was renamed Weifang Diesel Engine Works in the 1950s and built engines for marine and defense applications through the following decades. In 1998 the company began an international transformation, and Weichai Power Co., Ltd. was formed in 2002. In 2009 the broader group was reorganized under Shandong Heavy Industry Group, and Weichai America Corp was established to serve the Americas.

Weichai has grown through acquisition as well as organically, adding Moteurs Baudouin, a controlling stake in Power Solutions International, the yacht builder Ferretti, and a stake in Germany's KION Group. Weichai America increased its ownership of PSI to 51 percent in 2019 after a first strategic investment of $60 million for about 41 percent in 2017. Day-to-day, James Zhang serves as Chairman and Chief Executive Officer of Weichai America Corp, and is also a Vice President of Weichai Group and Chairman of PSI. The group is state-owned through Shandong Heavy Industry Group and reports a global workforce above 100,000; Weichai America reports more than 800 US employees.

Certifications and quality

Weichai America's North American record centers on emissions certification. The company received its first EPA certification for a natural gas off-road engine family in 2015, followed by an EPA certificate on its 6L NA engine for off-road and stationary applications in 2016, the first of its rich-burn engine families cleared for North American use. Weichai Power also publicized a base-engine thermal-efficiency world record of 51.09 percent in January 2022, a company-reported milestone. Group-level quality systems of the type common to engine manufacturers apply across Weichai's plants; a specific North American ISO or IATF certificate was not located on the company's own site, so only the EPA certifications are reported here as documented.

The Rolling Meadows Innovation Center functions as a technology development and testing campus for engines, alternative fuels, and powertrain components aimed at the North American market. The company describes its focus there as clean-burning alternative-fuel engines and securing US certifications, with a stated reason for locating in the region being proximity to a high-tech supply base and skilled talent.

Known customers

Weichai America does not publish a named customer list, which is normal for an engine supplier serving OEM and industrial programs. One channel relationship is documented on the company's own site: Generac packages Baudouin M33 and M55 engines at its Oshkosh, Wisconsin plant for the mission-critical and data-center markets, placing Weichai's engines inside a major North American backup-power supply chain. PSI discloses customer-concentration percentages in its SEC filings but identifies buyers only as unnamed customers, consistent with the way Nasdaq-listed engine makers report demand from a small number of large accounts. Beyond these, specific end customers are not disclosed.

Sourcing evidence

Weichai America's US import record reads like a regional operations hub importing group-made hardware. Public bill of lading records show 166 sea shipments on file, with the most recent dated September 17, 2026, so the company is actively importing. The top foreign shippers are Weichai group affiliates: Shandong Weichai Import and Export and Shandong Shantui Construction Machinery, the latter a Weichai and Shandong Heavy Industry construction-equipment affiliate. That is the expected pattern for a company that imports engines and machinery built by its own parent group in China and supports them with US-based service, parts, and R&D, rather than a broker moving unrelated goods. For buyers weighing tariff exposure on China-origin engines and components, that direct parent-to-hub import structure is worth understanding.

Coverage caveats apply. These are US ocean-freight records only; air, truck, and rail movements do not appear, some records name freight intermediaries rather than manufacturers, and product categories come from declared manifest codes, which are noisy. Absence of a record is not evidence of absence.

Frequently asked questions

What does Weichai America make?

Weichai America Corp supplies industrial diesel and natural gas engines, generator sets, and integrated power systems for data centers, marine, off-road, industrial, oil and gas, and agricultural applications. Its North American lineup spans three brands: Weichai Power base engines, Moteurs Baudouin marine and power-generation engines, and Power Solutions International (PSI). It also runs an Innovation Center in Rolling Meadows, Illinois for engine and alternative-fuel R&D.

Who owns Weichai America?

Weichai America Corp is a subsidiary of Weichai Power Co., Ltd., which is publicly listed in Shenzhen (000338) and Hong Kong (2338) and is part of the state-owned Weichai Group under Shandong Heavy Industry Group. Weichai America also holds a 51 percent controlling stake in Nasdaq-listed Power Solutions International (PSIX).

What is Weichai's revenue?

Weichai Power, the listed parent, reported revenue of about RMB 215.69 billion for fiscal year 2024, roughly flat year over year, with net profit of RMB 11.4 billion, up 26.5 percent. Its North American subsidiary Power Solutions International reported record full-year 2025 net sales of $722.4 million, up 52 percent, and net income of $114.0 million. Weichai America does not publish standalone financials.

Where is Weichai America headquartered?

Weichai America Corp is headquartered at 3100 Golf Road, Rolling Meadows, Illinois 60008, northwest of Chicago, where it also operates its Innovation Center. The company reports additional US facilities in Wisconsin, Michigan, and Texas. The global Weichai Group is headquartered in Weifang, Shandong, China.

Who are Weichai America's customers?

Weichai America does not publish a named customer list. One documented relationship is with Generac, which packages Baudouin M33 and M55 engines at its Oshkosh, Wisconsin plant for the mission-critical and data-center markets. PSI reports customer-concentration figures in SEC filings but identifies its buyers only as unnamed accounts.

How many employees does Weichai America have?

Weichai America reports more than 800 US employees, with the global Weichai Group employing more than 100,000 people. Databases that model headcount from LinkedIn profiles show far lower figures and undercount manufacturing and engineering workforces.

Last verified September 28, 2026. Is this your company? Request a correction.