8408.90—Other engines
General duty rate
Free
Across 7 10-digit lines
Coverage on this page
Up one level: 8408 — Compression-ignition internal combustion piston engines (diesel or semi-diesel engines): (heading)
Plain-English explanation
HTS 8408.90 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Other engines. It sits in Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Section XVI: Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such Articles and rolls up 7 10-digit statistical lines, all with a general duty rate of Free. 2 Chapter 99 tariff modifications currently touch one or more lines under this subheading.
10-digit lines under 8408.90(7)
Pick a line to view full rate detail and compute landed duty
8408.90.10.40Not exceeding 37.3 kWFree8408.90.10.80Exceeding 37.3 kWFree8408.90.90.10Not exceeding 149.2 kWFree8408.90.90.20Exceeding 149.2 kW but not exceeding 373 kWFree8408.90.90.30Exceeding 373 kW but not exceeding 746 kWFree8408.90.90.40Exceeding 746 kW but not exceeding 1,119 kWFree8408.90.90.50Tariff modifications(2)
Chapter 99 overlays touching one or more lines under 8408.90
| Code | Authority | Rate |
|---|---|---|
| 9903.88.01 | section_301 | The duty provided in the applicable subheading plus 25% |
| 9903.88.11 | section_301 | The duty provided in the applicable subheading |
Frequently asked questions
What does HTS 8408.90 cover?
HTS 8408.90 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Other engines. It belongs to Chapter 84 and rolls up 7 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 8408.90?
Every 10-digit line under HTS 8408.90 carries a general (Column 1) duty rate of Free. Section 301, Section 232, and AD/CVD overlays may stack on top of this rate at the per-line level — open a specific 10-digit code to see its complete tariff stack.
How do I find the right 10-digit line under HTS 8408.90?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 8408.90 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 8408.90?
Learn more
Tandom guides relevant to this code
Section 301 China tariff exclusions in 2026
What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
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How Chapter 99 tariff layers stack on a single entry
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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