Harmonized Tariff Schedule of the United States · HTS code · HS 8408.90
8408.90.90: Other diesel engines: Compression-ignition internal combustion piston engines: other engines, other
Other diesel engines
Not declarable on its own: use one of its 5 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 8408 Compression-ignition internal combustion piston engines (diesel or semi-diesel engines):
- 8408.90 Other engines:
- 8408.90.90 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.
No additional measures recorded for this origin.
Subdivisions
- 8408.90.90 Other Free
- 8408.90.90.10 Not exceeding 149.2 kW No.
- 8408.90.90.20 Exceeding 149.2 kW but not exceeding 373 kW No.
- 8408.90.90.30 Exceeding 373 kW but not exceeding 746 kW No.
- 8408.90.90.40 Exceeding 746 kW but not exceeding 1,119 kW No.
- 8408.90.90.50 Exceeding 1,119 kW No.
Same subheading in other tariffs
8408.90 Compression-ignition internal combustion piston engines: other engines
UK 4% Third-country duty 26 tariff lines 
EU 4.2% Third-country duty 12 tariff lines 
Türkiye Free – 4.2% Third-country duty 23 tariff lines · average 2.2% 
Canada Free General (MFN) 6 tariff lines 
Mexico Free – 5% General (MFN) 2 tariff lines · average 2.5% 
Brazil 7.2% – 12.6% General (MFN) 2 tariff lines · average 9.9% 
Argentina Free – 12.6% General (MFN) 3 tariff lines · average 8.4% 
Peru Free General (MFN) 2 tariff lines 
New Zealand Free General (MFN) 2 tariff lines 
Japan Free General (MFN) 4 tariff lines 
Taiwan 2.5% – 5% General (MFN) 3 tariff lines · average 3.3% 
GCC 5% General (MFN) 2 tariff lines 
Switzerland Free General (MFN) 1 tariff line 
Norway Free General (MFN) 1 tariff line 
North Macedonia 7% – 15% General (MFN) 12 tariff lines · average 14.3% 
Nigeria 10% General (MFN) 1 tariff line USA lines: 8408.90
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.
- N328385 U.S. CBP
The tariff classification of an engine parts assembly from India
Legal notes
HTS code 8408.90.90 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 8408.90 (compression-ignition internal combustion piston engines: other engines).
The general duty is free.
5 statistical sub-lines below it are used in the declaration.
For the same subheading, the UK duty is 4%, the EU duty is 4.2%, the Türkiye duty is 0%–4.2%, the Canada duty is free, the Mexico duty is 0%–5%, the Brazil duty is 7.2%–12.6%, the Argentina duty is 0%–12.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is 2.5%–5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 7%–15% and the Nigeria duty is 10%.
The United States imported goods of subheading 8408.90 worth US$2.9bn in 2024; the largest supplier was Japan, and the United Kingdom ranked 2nd with US$779m.
Questions and answers
What is the USA import duty for HTS code 8408.90.90?
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 8408.90 as a whole, the largest supplier in 2024 was Japan (US$813m), followed by the United Kingdom.
Typical products
Everyday names, not part of the legal text.