What US Motor Works makes

US Motor Works, LLC is an automotive and heavy-duty aftermarket manufacturer and distributor focused on engine cooling and fuel systems. The company manufactures mechanical and electric water pumps and fan clutches in-house, and its catalog extends across radiators, condensers, heater cores, charge-air coolers, fluid coolers, electric and belt-driven fans, and a complete line of fuel pumps and fuel pump modules. It also acts as an export distributor for OEM and aftermarket engine parts, serving gasoline and diesel applications from small passenger engines up to heavy-duty and commercial powerplants.

The business runs several brands under one roof. USMW Professional Series and USMW HD cover professional-grade and heavy-duty cooling and fuel parts. OSC Heat Transfer Products (OSC Automotive) supplies radiators, condensers, heater cores, and heavy-duty charge-air coolers engineered to fit like the original equipment part. Derale Performance handles performance cooling for the drivetrain, and Pacer Performance builds Jeep armor, LED lighting, and truck and automotive accessories. Water pumps and fan clutches remain the company's core competency, and it says it was the first to introduce water-pump and fan-clutch kits as a combined aftermarket offering.

US Motor Works describes a 120-day product-development cycle, from product definition through design, prototyping, and final production. As a private-label and branded supplier, it reverse-engineers parts to meet or exceed OEM specifications and says it cross-references field data to correct known original-equipment issues during development.

Ownership and history

Gil Benjamin and his cousin Doron Goren founded US Motor Works in 1995, acquiring a small water-pump assembly plant in New Brunswick, New Jersey and moving the presses and tooling to California in two shipping containers. Benjamin, whose father built the commercial-vehicle parts company that became FP Diesel, is President and CEO today; Goren is Chief Operating Officer. The company began by assembling roughly 25 domestic water-pump SKUs for customers in Puerto Rico and Venezuela, and grew its international base before expanding across North America.

Growth came through both organic expansion and acquisition. US Motor Works entered fan clutches through a 1999 acquisition, reached about one million water pumps a year by 2007, and acquired Derale Performance and Pacer Performance in 2016 and OSC Automotive in 2021. The company remains independent and privately held, a structure its leadership cites as a source of fast decision-making.

Facilities and footprint

US Motor Works is headquartered in Santa Fe Springs, California, where it runs corporate offices along with manufacturing and distribution. It operates a manufacturing and distribution facility in Los Angeles, a fulfillment center and fuel pump division in Duluth, Georgia, and a 167,000-square-foot central fulfillment center opened in Liberty, Missouri in 2024, with a 100,000-square-foot distribution center under construction next door. In Mexico, the company opened a 50,000-square-foot distribution facility in Monterrey in 2019 and added an 85,000-square-foot manufacturing plant on the same campus in 2021, giving it the ability to nearshore high-velocity items and serve Mexico, Central America, and South America.

Certifications and quality

US Motor Works describes itself as a certified ISO 9001:2015 company and says several of its facilities hold the certification, with its Mexico plants in the process of certifying. The company reports that it first earned ISO certification in 2010 and treats ISO quality standards as the backbone of its operations. It frames quality within a broader operational-excellence program built on lean manufacturing and continuous improvement, and says all products are designed and tested in the USA. These are the company's own statements rather than independently audited claims.

Known customers

Most of the company's customers are unnamed, which is normal for a private-label aftermarket supplier serving retailers and distributors. One relationship is on the public record: in 2026, US Motor Works received the WITTDTJR supplier award from AutoZone Mexico, a documented sign of an active retail-distribution relationship. The company also earned a place on the MEMA 2026 Top Aftermarket Suppliers list, the industry association's ranking of leading aftermarket parts makers.

Sourcing evidence

US Motor Works appears in US customs bill-of-lading records with roughly 2,886 sea shipments on record and its most recent shipment logged in December 2026, indicating steady, active importing. Its named foreign suppliers include Chinese automotive pump, heat-exchanger, and electrical component makers such as Maanshan RNBC Heat Exchanger, Wenzhou Wanzheng Automobile Pump, GA Union Technology, and Taizhou Huizheng Auto Electrical, a component-in, finished-part-out pattern consistent with a manufacturer that assembles water pumps, radiators, and fuel pumps domestically rather than a reseller of finished goods.

These are US ocean-freight records only. Air, truck, and rail movements, including most cross-border flows with the company's Monterrey operations, 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 US Motor Works make?

US Motor Works manufactures and distributes aftermarket engine cooling and fuel-system parts: water pumps, fan clutches, radiators, condensers, heater cores, charge-air coolers, fluid coolers, electric and belt-driven fans, and fuel pumps. Its brands include USMW Professional Series, USMW HD, OSC Automotive, Derale Performance, and Pacer Performance.

Who owns US Motor Works?

US Motor Works is independent and privately held. It was founded in 1995 by Gil Benjamin and his cousin Doron Goren, who serve today as President and CEO and Chief Operating Officer respectively.

Where is US Motor Works headquartered?

US Motor Works is headquartered in Santa Fe Springs, California, at 14722 Anson Avenue. It also operates facilities in Los Angeles, California; Duluth, Georgia; Liberty, Missouri; and Monterrey, Mexico.

Is US Motor Works a MEMA member?

Yes. US Motor Works is a member of MEMA, the Motor and Equipment Manufacturers Association, and was named to the MEMA 2026 Top Aftermarket Suppliers list.

What certifications does US Motor Works hold?

US Motor Works describes itself as a certified ISO 9001:2015 company and says it first earned ISO certification in 2010. It reports that several of its facilities are certified, with its Mexico plants in the process of certifying.

Who are US Motor Works' customers?

Most of the company's customers are unnamed, as is typical for a private-label aftermarket supplier. One documented relationship is AutoZone: US Motor Works received the WITTDTJR supplier award from AutoZone Mexico in 2026. The company sells branded and private-label parts to auto-parts retailers and distributors across North America.

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