8404.90.00.00
Parts
Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economizers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapor power units; parts thereof
Duty rates
Column 1 (General / MFN)
3.5%
Column 2 (Non-NTR)
45%
Column 1 (Special / FTA)
Free
Eligible
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.03.01
The duty provided in the applicable subheading + 10%
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.02
The duty provided in the applicable subheading
Articles the product of any country that (1) were loaded onto a vessel at the port of loading and in transit on the final mode of transit prior to entry into the United States, before 12:01 a.m. eastern standard time on February 24, 2026; and (2) are entered for consumption, or withdrawn from warehouse for consumption, before 12:01 a.m. eastern standard time on February 28, 2026
Effective from February 24, 2026 through July 24, 2026
9903.03.03
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.04
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(iii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.05
The duty provided in the applicable subheading
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components of any country, provided for in subdivision (aa)(iv) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.06
The duty provided in the applicable subheading
Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.07
The duty provided in the applicable subheading
Articles the product of Canada, as provided for in subdivision (aa)(vi) of U.S. note 2 to this subchapter
Applies to origin: CA
Effective from February 24, 2026 through July 24, 2026
9903.03.08
The duty provided in the applicable subheading
Articles the product of Mexico, as provided for in subdivision (aa)(vii) of U.S. note 2 to this subchapter
Applies to origin: MX
Effective from February 24, 2026 through July 24, 2026
9903.03.09
The duty provided in the applicable subheading
Articles of textiles or apparel the product of Costa Rica, the Dominican Republic, El Salvador, Guatemala, Honduras or Nicaragua, as provided for in subdivision (aa)(viii) of U.S. note 2 to this subchapter
Applies to origin: CR, SV, GT, HN, NI, DO
Effective from February 24, 2026 through July 24, 2026
9903.03.10
The duty provided in the applicable subheading
Articles that are donations, by persons subject to the jurisdiction of the United States, such as food, clothing and medicine, intended to be used to relieve human suffering
Effective from February 24, 2026 through July 24, 2026
9903.03.11
The duty provided in the applicable subheading
Articles that are informational materials, including but not limited to publications, films, posters, phonograph records, photographs, microfilms, microfiche, tapes, compact disks, CD ROMs, artworks and news wire feeds
Applies to origin: IL
Effective from February 24, 2026 through July 24, 2026
9903.88.01
LIST_1
The duty provided in the applicable subheading plus 25%
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Applies to origin: CN
Effective from July 6, 2018
Related CBP rulings
The tariff classification of condenser units from Japan, Korea, Russia and whether U.S. titanium tubing will be eligible for the duty exemption available under subheading 9802.00.80, HTSUS, when returned to the U.S. from Russia, Japan or Korea in the form of a condenser unit.
00.80, Harmonized Tariff Schedule of the United States (HTSUS). Specifically, you requested a determination whether U.S. titanium tubing will be eligible for the duty exemption available under subheading 9802.00.80, HTSUS, when returned to
Whether U.S. titanium strip and slab will be eligible for the duty exemption available under subheading 9802.00.80, HTSUS, when returned to the U.S. from Russia, Japan or Korea in the form of a tube for a condenser unit.
00.80, Harmonized Tariff Schedule of the United States (HTSUS). Specifically, you requested a determination whether U.S. titanium strip and slab will be eligible for the duty exemption available under subheading 9802.00.80, HTSUS, when retu
The tariff classification of condenser tube bundle modules and condenser water chambers from Japan.
Under consideration are condenser tube bundle modules and condenser water chambers for use in a boiling water reactor nuclear power plant. The condenser is a key component in the closed-loop system that transfers energy from the reactor to
The tariff classification and status under the North American Free Trade Agreement (NAFTA), of finned tube bundles exported to Mexico; Article 509
The tariff classification and status under the North American Free Trade Agreement (NAFTA), of finned tube bundles exported to Mexico; Article 509
Finned Tube Bundles
Process industries, such as electric power plants, generate electricity in part by using steam turbine generators. Heat in the form of exhaust steam from these turbine generators either has no practical commercial use or must otherwise be r
The tariff classification of parts of heat recovery systems from Korea, Thailand, Japan, Denmark and Singapore.
You refer to the goods to be imported as materials which will be used in the construction of various heat recovery systems for combined cycle power plants. You have provided a Kawasaki company profile and a tentative shipping schedule with
The tariff classification of barometric and surface condensers from Mexico.
The tariff classification of barometric and surface condensers from Mexico.
Steam Condensers from South Africa
The merchandise in question are steam condensers to be imported from the Union of South Africa. The steam condensers are to be used with large steam boilers which are employed by large electric utilities in power generation. Arrays of these
Other codes in heading 8404
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 8404.90.00.00 from each major US trading partner.
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