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HTS 8408Chapter 84

HTS 8408Compression-ignition internal combustion piston engines (diesel or semi-diesel engines): Duty Rate & Import Guide

Nuclear Reactors, Boilers, Machinery · 10 court cases · $439.4M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$439.4M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

HIGH

0 rulings — · 0 reg · 8 CIT, 2 CAFC

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

Compare All →

Data compiled from USITC HTS, US Census Bureau, CourtListener · As of 2026-04-28 · Updates monthly

Regulatory Pressure

This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 0 pending Federal Register actions, and 10 CIT/CAFC cases.

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

High-Volume Code

This is a high-volume import code — $439M in monthly US imports. Duty rate changes or trade remedy actions on this code have significant economic impact.

Trade Remedy

Additional Tariffs Apply

Section 301 — China Tariffs+25%

List 1 — ~$34B of Chinese goods (machinery, electronics, industrial components)

Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.

Effective 2018-07-06

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (23)

CodeDescriptionRate
8408.10.00Marine propulsion engines2.5%
8408.10.00.05Not exceeding <il>111.9 kW</il>
8408.10.00.15Exceeding <il>111.9 kW</il> but not exceeding <il>149.2 kW</il>
8408.10.00.20Exceeding <il>149.2 kW</il> but not exceeding <il>223.8 kW</il>
8408.10.00.30Exceeding <il>223.8 kW</il> but not exceeding <il>373 kW</il>
8408.10.00.40Exceeding <il>373 kW</il> but not exceeding <il>746 kW</il>
8408.10.00.50Exceeding <il>746 kW</il>
8408.20Engines of a kind used for the propulsion of vehicles of chapter 87:
8408.20.10To be installed in tractors suitable for agricultural useFree
8408.20.10.40Not exceeding <il>37.3 kW</il>
8408.20.10.80Exceeding <il>37.3 kW</il>
8408.20.20.00To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 87042.5%
8408.20.90.00Other2.5%
8408.90Other engines:
8408.90.10To be installed in agricultural or horticultural machinery or equipmentFree
8408.90.10.40Not exceeding <il>37.3 kW</il>
8408.90.10.80Exceeding <il>37.3 kW</il>
8408.90.90OtherFree
8408.90.90.10Not exceeding <il>149.2 kW</il>
8408.90.90.20Exceeding <il>149.2 kW</il> but not exceeding <il>373 kW</il>
8408.90.90.30Exceeding <il>373 kW </il>but not exceeding <il>746 kW</il>
8408.90.90.40Exceeding <il>746 kW</il> but not exceeding <il>1,119 kW</il>
8408.90.90.50Exceeding <il>1,119 kW</il>

Court of International Trade & Federal Circuit (10)

View all 10+ cases on PACER →

Matching Export Code (Schedule B)

8408100010Schedule B

COMPRESSION-IGNITION INTERNAL COMBUSTION PISTON ENGINES (DIESEL), NOT EXCEEDING 149.2 KW (200 HP), FOR MARINE PROPULSION

Census Bureau export classification matching this HTS import code.

8405.90.00.008408.10.00