Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
HTS heading 8409: Parts suitable for use solely or principally with the engines of heading 8407 or 8408
34 numbered lines under heading 8409, including 22 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.
| HTS code | Description | Unit | General | Special | Column 2 |
|---|---|---|---|---|---|
| 8409 | Parts suitable for use solely or principally with the engines of heading 8407 or 8408: | ||||
| 8409.10.00 | For aircraft engines | Free | 35% | ||
| 8409.10.00.40 | For use in civil aircraftNote: See General Note 6. | kg | |||
| 8409.10.00.80 | Other | kg | |||
| Other: | |||||
| 8409.91 | Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines): | ||||
| 8409.91.10 | 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 | 10% | ||
| 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 | kg | |||
| 8409.91.10.60 | For marine propulsion engines | kg | |||
| 8409.91.10.80 | Other | kg | |||
| Other: | |||||
| To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704: | |||||
| 8409.91.30.00 | Aluminum cylinder heads | No., kg | 2.5% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% |
| 8409.91.50 | Other | 2.5% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8409.91.50.10 | Connecting rods | No., kg | |||
| 8409.91.50.81 | Steel forgings | kg | |||
| 8409.91.50.85 | Other | kg, No. | |||
| 8409.91.92 | For marine propulsion engines | 2.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8409.91.92.10 | Connecting rods | No., kg | |||
| 8409.91.92.90 | Other | kg | |||
| 8409.91.99 | Other | 2.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8409.91.99.10 | Connecting rods | No., kg | |||
| 8409.91.99.90 | Other | kg | |||
| 8409.99 | Other: | ||||
| 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 | 10% | ||
| 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 | kg | |||
| 8409.99.10.60 | For marine propulsion engines | kg | |||
| 8409.99.10.80 | Other | kg | |||
| Other: | |||||
| 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% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8409.99.91.10 | Connecting rods | No., kg | |||
| 8409.99.91.90 | Other | kg, No. | |||
| 8409.99.92 | For marine propulsion engines | 2.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8409.99.92.10 | Connecting rods | No., kg | |||
| 8409.99.92.90 | Other | kg | |||
| 8409.99.99 | Other | Free | 35% | ||
| 8409.99.99.10 | Connecting rods | No., kg | |||
| 8409.99.99.90 | Other | kg |
Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.
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Request a free auditSource: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.