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HTS 8409

Parts suitable for use solely or principally with the engines of heading 8407 or 8408

33 lines US HTS, Harmonized Tariff Schedule of the United States – 2026 HTS Revision 20

CodeDescriptionUnitGeneralSpecialColumn 2Source
8409.10.00For aircraft enginesFree35%USITC
8409.10.00.40For use in civil aircraftkgFree35%USITC
8409.10.00.80OtherkgFree35%USITC
Other
8409.91Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines)USITC
8409.91.10Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machineryFree10%USITC
8409.91.10.40For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704kgFree10%USITC
8409.91.10.60For marine propulsion engineskgFree10%USITC
8409.91.10.80OtherkgFree10%USITC
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
8409.91.30.00Aluminum cylinder headsNo., kg2.5%Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.50Other2.5%Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.50.10Connecting rodsNo., kg2.5%Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.50.81Steel forgingskg2.5%Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.50.85Otherkg, No.2.5%Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.92For marine propulsion engines2.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.92.10Connecting rodsNo., kg2.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.92.90Otherkg2.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.99Other2.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.99.10Connecting rodsNo., kg2.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.91.99.90Otherkg2.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.99OtherUSITC
8409.99.10Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machineryFree10%USITC
8409.99.10.40For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704kgFree10%USITC
8409.99.10.60For marine propulsion engineskgFree10%USITC
8409.99.10.80OtherkgFree10%USITC
Other
8409.99.91To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 87042.5%Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.99.91.10Connecting rodsNo., kg2.5%Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.99.91.90Otherkg, No.2.5%Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.99.92For marine propulsion engines2.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.99.92.10Connecting rodsNo., kg2.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.99.92.90Otherkg2.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)35%USITC
8409.99.99OtherFree35%USITC
8409.99.99.10Connecting rodsNo., kgFree35%USITC
8409.99.99.90OtherkgFree35%USITC

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Source: USITC, Harmonized Tariff Schedule of the United States – 2026 HTS Revision 20, effective 28 September 2026. Heading 8409 at USITC

Not shown: the additional duties of Chapter 99 (such as Section 301 and Section 232), anti-dumping and countervailing duties, quotas and the legal notes.

This page is general information, not legal advice and not a classification decision. Tariff texts and rates change: check the publisher's current schedule, and ask the customs authority for a binding ruling where the answer matters.

All headings of chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof