Tariff Watch22 statistical lines under this heading · 1 distinct Column 1 rate · highest ad valorem total 37.50% from China · lowest 10.00% from United Kingdom
| Origin | Ad valorem layers | Layers | Reported under |
|---|---|---|---|
| China CHN | 37.50% | mfn + s301 + s301 | 9903.88.01 9903.05.31 |
| Vietnam VNM | 12.50% | mfn + s301 | 9903.05.84 |
| Japan JPN | 12.50% | s301 | 9903.05.49 |
| South Korea KOR | 12.50% | s301 | 9903.05.71 |
| Thailand THA | 12.50% | mfn + s301 | 9903.05.77 |
| Brazil BRA | 12.50% | mfn + s301 | 9903.05.27 |
| Mexico MEX | 10.00% | mfn + s301 | 9903.05.55 |
| Canada CAN | 10.00% | mfn + s301 | 9903.05.29 |
| India IND | 10.00% | mfn + s301 | 9903.05.44 |
| Germany DEU | 10.00% | s301 | 9903.05.39 |
| Italy ITA | 10.00% | s301 | 9903.05.39 |
| United Kingdom GBR | 10.00% | mfn + s301 | 9903.05.81 |
| Code | Description | Column 1 | Special | Units |
|---|---|---|---|---|
| 8409.10.00.40 | For use in civil aircraft | inherited | kg | |
| 8409.10.00.80 | Other | inherited | kg | |
| 8409.91.10.40 | For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704 | inherited | kg | |
| 8409.91.10.60 | For marine propulsion engines | inherited | kg | |
| 8409.91.10.80 | Other | inherited | kg | |
| 8409.91.30.00 | Aluminum cylinder heads | 2.5% | No., kg | |
| 8409.91.50.10 | Connecting rods | inherited | No., kg | |
| 8409.91.50.81 | Steel forgings | inherited | kg | |
| 8409.91.50.85 | Other | inherited | kg, No. | |
| 8409.91.92.10 | Connecting rods | inherited | No., kg | |
| 8409.91.92.90 | Other | inherited | kg | |
| 8409.91.99.10 | Connecting rods | inherited | No., kg | |
| 8409.91.99.90 | Other | inherited | kg | |
| 8409.99.10.40 | For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704 | inherited | kg | |
| 8409.99.10.60 | For marine propulsion engines | inherited | kg | |
| 8409.99.10.80 | Other | inherited | kg | |
| 8409.99.91.10 | Connecting rods | inherited | No., kg | |
| 8409.99.91.90 | Other | inherited | kg, No. | |
| 8409.99.92.10 | Connecting rods | inherited | No., kg | |
| 8409.99.92.90 | Other | inherited | kg | |
| 8409.99.99.10 | Connecting rods | inherited | No., kg | |
| 8409.99.99.90 | Other | inherited | kg |
| Programme | Rate as published | Contribution | Reported under | In force from |
|---|---|---|---|---|
| Column 1 General (MFN) | Free | 0.00% | — | not established |
Source: USITC, Harmonized Tariff Schedule of the United States, 2026 HTS Revision 17, published 2026-08-01. Verified 2026-08-31. | ||||
| Section 301 | The duty provided in the applicable subheading plus 25% | 25.00% | 9903.88.01 | 2018-07-06 |
Status unconfirmed. The second statutory four-year review of this action is running. The continuation-request deadlines for the underlying 2018 actions closed on 2026-07-05 and 2026-08-22 and no continuation notice has been published. There is no evidence of termination either, and the duty is almost certainly still collectible; what we cannot do is cite a document saying so. Source: USTR, Notice of Action: China's Acts, Policies and Practices Related to Technology Transfer (List 1) (83 FR 28710), published 2018-06-20. Verified 2026-08-31. | ||||
| Section 301 | The duty provided in the applicable subheading + 12.5% | 12.50% | 9903.05.31 | 2026-07-24 |
Source: USTR, Notice of Actions in Section 301 Investigations of Various Economies (FR Doc. 2026-15181), published 2026-07-28. Verified 2026-08-31. | ||||
Common questions
- What is the duty rate for HTS 8409?
- Heading 8409 covers parts suitable for use solely or principally with the engines of heading 8407 or 8408. Duty is assessed at the 10-digit statistical line; the figures here are resolved for 8409.10.00.40, the first line under this heading. Its Column 1 rate is Free. On top of that, the ad valorem total depends on origin: China carries 37.50% and United Kingdom carries 10.00%.
- Why does the rate differ by country for the same HTS code?
- The Column 1 rate is the same for every origin with normal trade relations. Trade-remedy duties under Sections 232, 301 and 338 are imposed by origin, by product, or by both, so two shipments of the same article from different countries can carry very different totals.
- Is this the rate I will actually pay?
- It is the rate that applies to this classification and origin on the date shown. The duty owed on a specific entry also depends on the 10-digit statistical suffix, declared content where a duty is content-based, preference eligibility, and any AD/CVD order in scope.