China HS → US HTS
China HS 8409.9910 (船舶发动机用): US HTS candidates & duty rates
China tariff line for "船舶发动机用" shares the international HS6 anchor 840999 with 12 US HTS candidates below. Compare descriptions, then calculate landed duty.
Updated
China HS 8409.9910 most commonly maps to US HTS 8409.99.10. Total duty rate from China (MFN + Chapter 99 overlays): about 50%. Verify the description before filing.
China tariff line facts
| China HS line | 8409.9910 |
|---|---|
| Description | 船舶发动机用 |
| Category path | 专用于或主要用于税目84.07或 > 其他 > 其他 > 船舶发动机用 |
| Shared HS6 | 840999 |
| China MFN rate (reference) | 5 |
| Schedule version | 2026 |
US HTS candidates (12)
| US HTS | Description | General (MFN) | Total from China |
|---|---|---|---|
| 8409.99.10 | Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery | Free | 50% |
| 8409.99.91 | To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704 | 2.5% | 52.50% |
| 8409.99.92 | For marine propulsion engines | 2.5% | 52.50% |
| 8409.99.99 | Other | Free | 50% |
| 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 | Free | 50% |
| 8409.99.10.60 | For marine propulsion engines | Free | 50% |
| 8409.99.91.10 | Connecting rods | 2.5% | 52.50% |
| 8409.99.92.10 | Connecting rods | 2.5% | 52.50% |
| 8409.99.99.10 | Connecting rods | Free | 50% |
| 8409.99.10.80 | Other | Free | 50% |
| 8409.99.91.90 | Other | 2.5% | 52.50% |
| 8409.99.92.90 | Other | 2.5% | 52.50% |
Total = MFN base + Section 301 / IEEPA / reciprocal overlays active for China origin. AD/CVD not included.
Frequently asked questions
Which US HTS code corresponds to China HS 8409.9910?
There is no one-to-one mapping: only the first six digits (HS6 840999) are shared internationally. Under this anchor the US schedule has 12 candidate lines; the most common is 8409.99.10. Match your product facts (material, use, construction) against the descriptions to pick the right one.
How much is US import duty for "船舶发动机用" from China?
Using the leading candidate 8409.99.10, the total rate from China is about 50% — MFN base plus the Chapter 99 overlays (Section 301 / IEEPA / reciprocal) active for China origin. Other candidates may differ, so verify classification first.
Why is China HS8 not identical to US HTS8?
The WCO Harmonized System is only agreed to six digits. China extends HS6 to 8/10-digit national lines for its own tariffs and statistics, and the US does the same with HTS8/HTS10 — the extensions are independent, so codes must be bridged via HS6.
How do I confirm the final HTS classification?
Compare the US line descriptions against your product facts, check CBP rulings for similar goods, and when in doubt request a binding ruling. The bridge tool lets you re-run this query and compare all candidates side by side.