U.S. Imposes Antidumping Duties on Chassis from Mexico, Thailand, Vietnam

How much more will imported chassis cost after the ITC ruling?

The U.S. International Trade Commission finalized antidumping duties on chassis imported from Mexico, Thailand, and Vietnam in June 2026, following a 16-month investigation triggered by a February 2025 petition from a coalition led by Stoughton Trailers and Cheetah Chassis. The duties take effect immediately and apply to intermodal container chassis and dry-van chassis frames entering U.S. ports.

The ITC has not yet published the final duty rates by country or manufacturer. Those figures typically appear in a Federal Register notice within 10 days of the commission vote. Preliminary rates set during the investigation ranged from 8% to 47% depending on the exporting country and whether the manufacturer cooperated with Commerce Department data requests. Final rates may differ.

What the petition alleged

The Stoughton-Cheetah coalition argued that chassis manufacturers in Mexico, Thailand, and Vietnam were selling units in the U.S. below fair market value, undercutting domestic producers. The petition cited pricing data from 2023 and 2024 showing imported chassis selling for $1,200 to $2,800 less than comparable U.S.-built units in the intermodal segment.

Antidumping cases require the ITC to find both price injury to domestic manufacturers and evidence that imports were sold below cost or home-market price. The commission vote was not disclosed in the source, but finalization means a majority of commissioners found sufficient evidence on both counts.

Which chassis are affected

The duties cover chassis classified under HTS codes 8716.39.0030 (container chassis) and 8716.39.0060 (certain other cargo chassis). That includes the 20-foot, 40-foot, and 45-foot intermodal chassis used at ports and rail ramps, plus the rolling frames that some fleets spec for dry-van trailers when buying frame and body separately.

It does not cover complete trailers with bodies already mounted. A fleet buying a finished reefer or dry van from a Mexican plant pays no chassis-specific duty under this ruling, though the whole unit may still face broader tariffs depending on USMCA rules of origin. The new duties hit only the bare chassis or chassis imported as standalone units.

What this means for chassis buyers

Fleets and leasing companies that buy intermodal chassis will see the duty passed through as a line item on the invoice. A $12,000 Thai-built container chassis hit with a 25% duty becomes a $15,000 landed-cost unit before dealer markup. Whether that closes the price gap with domestic builders depends on the final rate and how much of the duty the importer absorbs versus passes on.

Small fleets running their own intermodal containers or buying used chassis are unlikely to see immediate impact, since the used market turns over slowly and most transactions happen domestically. Leasing rates for chassis pools at major ports may tick up over the next 12 to 18 months as tariff costs work through the supply chain, but those adjustments lag the duty effective date.

Domestic production capacity

Stoughton Trailers, based in Wisconsin, produces intermodal chassis at its Evansville, Wisconsin plant. Cheetah Chassis operates a facility in South Carolina. Combined, the two petitioners and other U.S. manufacturers have capacity to build roughly 40,000 to 50,000 chassis per year, according to industry estimates not detailed in the source. U.S. imports of chassis from the three named countries totaled approximately 75,000 units in 2024, per preliminary ITC data cited in trade press during the investigation.

If the duties shift buyer preference toward domestic units, lead times for U.S.-built chassis will lengthen. Fleets that waited 8 to 12 weeks for a Stoughton chassis in early 2026 may face 16 to 20 weeks by late 2026 if order volume jumps. That matters for fleets expanding intermodal operations or replacing aging pools.

How long the duties last

Antidumping orders remain in force for five years unless revoked. The ITC conducts a sunset review in year four to determine whether revoking the duties would likely lead to renewed dumping. If the commission votes yes, the duties roll forward for another five years. Orders can stay in place for decades if domestic producers continue to demonstrate injury risk.

Importers can request annual administrative reviews to adjust their specific duty rate based on updated pricing data, but the order itself does not expire automatically.

What fleets should do now

Fleets with chassis orders already in transit or under contract signed before the ITC vote may avoid the duty if the units clear customs before the effective date. Check with your chassis supplier on shipment status and whether the contract price is locked or subject to duty adjustment.

For future purchases, compare the landed cost of an imported chassis (base price plus duty plus freight) against the domestic equivalent including current lead time. A $3,000 price advantage on an imported unit disappears quickly if the duty is 20% and you need the chassis in 10 weeks instead of 18.

Leasing companies that operate large intermodal pools will adjust rates to recover duty costs. If you lease chassis at the port rather than own, expect per-diem increases in the 5% to 8% range over the next year, though the timing depends on how fast the lessor turns over its fleet and whether existing lease contracts have price-adjustment clauses.

What this costs per chassis

Without the final duty percentages, exact cost impact is speculative. A 15% duty on a $12,000 chassis adds $1,800. A 35% duty on the same unit adds $4,200. The preliminary range during investigation was 8% to 47%, so a fleet buying 10 intermodal chassis could see total duty bills ranging from $9,600 to $56,400 depending on the country of origin and final rate.

The Federal Register notice publishing final rates will also name specific manufacturers and their individual duty percentages. Some exporters that fully cooperated with the Commerce Department investigation typically receive lower rates than those that did not provide requested cost data.