Base
HTS 8409.99.99Chapter 84

HTS 8409.99.99 — Other Duty Rate & Import Guide

Nuclear Reactors, Boilers, Machinery · 1 pending regulation · $281.8M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

35%

Trade Agreement Eligibility

CUSMAKORUS

Notes

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Trade Intelligence

Monthly Imports

$281.8M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

LOW

2 rulings — · 1 reg · 0 cases

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: 17 NCM codes

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Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, Federal Register, CPSC SaferProducts.gov, HMRC / DG TAXUD / CBSA / SISCOMEX · As of 2026-04-28 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code
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 — $282M 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 (3)

CodeDescriptionRate
8409.99.99OtherFree
8409.99.99.10Connecting rods—
8409.99.99.90Other—

CBP Rulings (2)

953602Classification

PRD 0712-93-100120; Fuel Injector Nozzles; Parts of Compression Ingnition Engines; Parts of Fuel-Injection Pumps for Compression Ignition Engines; Denial of Protest for Failure to Provide Evidence in Support of Claim, 19 CFR 174.13(a)(6)

H242642Classification

Application for Further Review Protest No. 4101-12-100758; Tariff classification of Cylinder Liners for Diesel Engines and Parts thereof

Federal Register (1)

Notice2018-15090
2018-07-17

Request for Comments Concerning Proposed Modification of Action Pursuant to Section 301: China's Acts, Policies, and Practices Related to Technology Transfer, Intellectual Property, and Innovation

Request for comments and notice of public hearing.

Matching Export Code (Schedule B)

8409994000Schedule B

PARTS FOR COMPRESSION-IGNITION INTERNAL COMBUSTION PISTON ENGINES (DIESEL) FOR USE IN ROAD TRACTORS, MOTOR BUSES, AUTOMOBILES OR TRUCKS

Census Bureau export classification matching this HTS import code.

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