What Stant makes

Stant designs and manufactures vapor management, fuel delivery, and thermal management systems for the automotive industry. Its vapor management line covers on-board refueling vapor recovery (ORVR) components, evaporative emission carbon canisters, fuel tank isolation valves, and vent valves. Its fuel delivery line includes fuel and oil caps, the Stant Capless Refueling closure system, and fuel filler pipe assemblies. Its thermal management line runs from the pressure and radiator caps that first put Stant in the automobile through coolant control valves and engine and transmission cooling components. Stant supplies these as system-level solutions to OEMs and Tier 1 fuel-system integrators rather than as loose parts.

The product range tracks the shift toward electrified powertrains. Stant records a 2021 production release of an electro-mechanical fuel tank isolation valve for hybrid vehicles and 2022 development of a new vent valve and coolant control valves for battery-electric vehicles, extending its fuel and vapor heritage into thermal management for EVs. Stant also runs precision prototyping and engineering services, and in 2025 it announced a return to the independent automotive aftermarket at the AAPEX show, bringing its fuel caps and thermostats back to wholesale distributors after years focused on original-equipment programs.

Manufacturing runs across a broad process set: laser, spin, sonic, hot-plate, and vibration welding; injection molding; metal stamping and forming; metal brazing and welding; helium leak testing; pad printing; custom wax formulation; and high-speed automated assembly. That mix reflects products that combine molded plastic, stamped and formed steel, and rubber components in sealed, leak-tested assemblies.

Ownership and history

George Stant founded the company in 1898 in Connersville, Indiana, where its manufacturing plant and technical center remain. Stant describes itself as more than 120 years old and holding over 150 patents. Its milestone list runs from becoming the world's largest producer of precision piano tuning pins in 1915, through the flying-quail hood ornament for the first Ford Model A in 1927 and the Lev-R Vent safety pressure cap in 1960, to pioneering advanced ORVR technology for fuel systems in 1991 and next-generation Capless Refueling in 2015.

Stant has been owned by the private-equity firm H.I.G. Capital since June 2008, when H.I.G. acquired the company from Tomkins plc, with participation from Northstar Capital and GarMark Partners. Under that ownership the company has expanded internationally, including the long-standing Dongfeng Fuji Thomson (DFT) joint venture formed in 1987 and a joint venture covering South Korean operations. Beyond its Connersville manufacturing plant, Stant lists a headquarters and sales center in Rochester Hills, Michigan, a manufacturing plant in San Miguel de Allende, Mexico, a manufacturing plant in Ostrava, Czech Republic, and a sales office in Neuhaus, Germany, alongside China operations that appear in its supply chain. Stant recognition includes a 2025 Automotive News PACE Award for fluid-transfer technology.

Certifications and quality

Stant publishes IATF 16949 certificates for its Connersville (Stant USA Corporation), Czech Republic, and Mexico operations, with the Connersville certificate issued in June 2026 and the Mexico certificate dated 2025. It also publishes ISO 14001:2015 environmental certificates for its US, Czech, and Mexican sites and an ISO 45001:2018 occupational health and safety certificate for Stant USA Corp. The company describes zero-defect quality, 100 percent on-time delivery, and full program management from concept to launch as operating standards, and it runs in-house inspection and testing. Buyers evaluating suppliers on quality-system maturity can read more in our overview of PPAP and APQP.

Known customers

Stant's customer relationships are mostly unnamed, as is normal for a fuel and thermal systems supplier serving OEM programs. Documented recognition points to General Motors.

Stant also states on its own site that it is an approved supplier for most automakers and Tier 1s, naming Plastic Omnium, Kautex, TI, Delphi, Valeo, ABS, and SPI. Those are company-stated relationships with fuel-system integrators, not audited program facts, and are reported here as claims.

Sourcing evidence

US customs bill-of-lading records list a Stant importer entity with 1,448 sea shipments on record and a most recent shipment dated September 24, 2026, an active import cadence. Its top named foreign suppliers are Stant Automotive Systems Suzhou in China, which is Stant's own China operation; Dongfeng Fuji Thomson Thermostat, the DFT joint venture partner; Gerdes in Germany, a fuel-cap and closure component maker; and Asteer, a fuel-system components supplier. That profile, intercompany flows plus closure and fuel-system component inputs, is the signature of a manufacturer importing components and tooling for domestic production, not a reseller of finished goods. The importer of record is registered to a distribution address in White Hall, Arkansas, separate from the manufacturing plants Stant names, consistent with a parts distribution or aftermarket function. Buyers weighing tariff exposure and nearshoring options should note Stant's Mexican plant in San Miguel de Allende alongside these import lanes.

Coverage caveats: 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 Stant make?

Stant manufactures vapor management, fuel delivery, and thermal management systems for vehicles: ORVR and evaporative-emission components, fuel tank isolation and vent valves, fuel and oil caps, the Capless Refueling closure system, fuel filler pipes, radiator and pressure caps, coolant control valves, and engine and transmission cooling components. It also offers precision prototyping and engineering services and, since 2025, an automotive aftermarket line.

Who owns Stant?

Stant has been owned by the private-equity firm H.I.G. Capital since June 2008, when H.I.G. acquired it from Tomkins plc with Northstar Capital and GarMark Partners. The company was founded by George Stant in 1898 and is headquartered around its Connersville, Indiana manufacturing plant, with an executive and sales center in Rochester Hills, Michigan.

Where is Stant located?

Stant's founding manufacturing plant and technical center are at 1620 Columbia Avenue, Connersville, Indiana. It also operates a headquarters and sales center in Rochester Hills, Michigan, a manufacturing plant in San Miguel de Allende, Mexico, a manufacturing plant in Ostrava, Czech Republic, a sales office in Neuhaus, Germany, and China operations.

Who are Stant's customers?

Most of Stant's customers are unnamed, but General Motors is documented through supplier-quality awards to its Connersville and Ostrava plants. Stant states it is an approved supplier to most automakers and Tier 1s, and lists Plastic Omnium, Kautex, TI, Delphi, and Valeo among them.

What certifications does Stant hold?

Stant holds IATF 16949 certification for its US (Connersville), Czech Republic, and Mexico operations, ISO 14001:2015 environmental certification for those sites, and ISO 45001:2018 occupational health and safety certification for Stant USA Corp. Certificates are posted on the company's site, with the Connersville IATF certificate issued in June 2026.

How old is Stant?

Stant was founded in 1898 in Connersville, Indiana, making it more than 120 years old. It holds over 150 patents and traces a line of automotive firsts from radiator caps and hood ornaments to on-board refueling vapor recovery and capless refueling systems.

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