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Fetching tariff lines, duty rates and related codes.
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Fetching tariff lines, duty rates and related codes.
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General (MFN)
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Special / FTA
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Column 2
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Rate shown is General (Column 1) MFN from the 2026_rev4. Additional duties may apply including the 10% Section 122 global surcharge and Section 301 duties on Chinese-origin goods. Last reviewed: 2026_rev4.
Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof:
Steam or other vapor generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers; parts thereof:
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:
Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers; parts thereof:
Steam turbines and other vapor turbines, and parts thereof:
Spark-ignition reciprocating or rotary internal combustion piston engines:
Heading 8403 covers Central heating boilers (other than those of heading 8402) and parts thereof:. Subcodes further classify products by material, use, or form — see the subcodes list below.
Duty rates are not set at the 4-digit heading level. Drill down to the 8 or 10-digit tariff line that matches your product.
Yes — the Section 122 global surcharge applies in addition to the base MFN rate shown above. Use our Tariff Impact Calculator to see the total landed rate for your product.
Compression-ignition internal combustion piston engines (diesel or semi-diesel engines):