Harmonized Tariff Schedule of the United States · HTS code · HS 8409.99
8409.99.99: Parts suitable for use solely or principally with: other, other, other, other
Diesel engine parts
Not declarable on its own: use one of its 2 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 8409 Parts suitable for use solely or principally with the engines of heading 8407 or 8408:
- Other:
- 8409.99 Other:
- Other:
- 8409.99.99 Other
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 1
- Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 25%
- Applies to goods from
- China
- In force
- from 24 September 2018
- Legal act
- HTSUS 9903.88.03
Subdivisions
- 8409.99.99 Other Free
- 8409.99.99.10 Connecting rods No., kg
- 8409.99.99.90 Other kg
Same subheading in other tariffs
8409.99 Parts suitable for use solely or principally with: other, other
UK 2% Third-country duty 6 tariff lines 
EU 2.7% Third-country duty 1 tariff line 
Türkiye 2.7% Third-country duty 9 tariff lines 
Canada Free Third-country duty 3 tariff lines 
Mexico Free – 25% Third-country duty 13 tariff lines · average 15.8% 
Brazil Free – 16% Third-country duty 17 tariff lines · average 10.4% 
Argentina Free – 16% Third-country duty 21 tariff lines · average 11.4% 
Peru Free Third-country duty 12 tariff lines 
New Zealand Free – 5% Third-country duty 22 tariff lines · average 3.6% 
Japan Free Third-country duty 2 tariff lines 
Taiwan 5% Third-country duty 6 tariff lines 
GCC 5% Third-country duty 5 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 2 tariff lines 
North Macedonia 2.7% Third-country duty 1 tariff line 
Nigeria 10% Third-country duty 1 tariff line USA lines: 8409.99
- 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 machinery
- 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 8704
- 8409.99.92For marine propulsion engines
- 8409.99.99Parts suitable for use solely or principally with: other, other, other, other
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N309222 U.S. CBP
The tariff classification of an engine assembly for water pumping from India
Legal notes
Additional notes
1. For the purposes of subheadings 840710 and 840910, the expression ‘aircraft engines’ shall apply only to engines designed for fitting with an airscrew or rotor.
2. Subheading 84717030 shall also apply to CD-ROM drives, being storage units for automatic data-processing machines, which consist of drive units designed for retrieving the signals from CD-ROMs, audio CDs and photo CDs and equipped with a jack for earphones, a volume-control button or a start/stop button.
In the Harmonized Tariff Schedule of the United States, 8409.99.99 is one of 4 lines under subheading 8409.99, parts suitable for use solely or principally with: other, other.
The general duty is free.
2 statistical sub-lines below it are used in the declaration.
For the same subheading, the UK duty is 2%, the EU duty is 2.7%, the Türkiye duty is 2.7%, the Canada duty is free, the Mexico duty is 0%–25%, the Brazil duty is 0%–16%, the Argentina duty is 0%–16%, the Peru duty is free, the New Zealand duty is 0%–5%, the Japan duty is free, the Taiwan duty is 5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 2.7% and the Nigeria duty is 10%.
The United States imported goods of subheading 8409.99 worth US$5bn in 2024; the largest supplier was Germany.
Questions and answers
What is the USA import duty for HTS code 8409.99.99?
The general duty in the Harmonized Tariff Schedule of the United States is free. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Where does the United States import these goods from?
For subheading 8409.99 as a whole, the largest supplier in 2024 was Germany (US$1bn), followed by Mexico.