Nuclear Reactors, Boilers, Machinery · $570.1M monthly imports · 100% from 1 countries · Updated daily from USITC
General
Free
Special
Free
Column 2
Free
Trade Agreement Eligibility
Monthly Imports
$570.1M
2026-01
Trade Concentration
100%
from top 3 of 1 origins
Regulatory Pressure
LOW
3 rulings — · 0 reg · 0 cases
Global Rates
🇺🇸 Free
🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: Free · 🇧🇷 Brazil: 12 NCM codes
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Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, HMRC / DG TAXUD / CBSA / SISCOMEX · As of 2026-04-28 · Updates monthly
100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.
This is a high-volume import code — $570M in monthly US imports. Duty rate changes or trade remedy actions on this code have significant economic impact.
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 →
| Code | Description | Rate |
|---|---|---|
| 8409.91 | Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines): | — |
| 8409.91.10 | Cast-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 | Free |
| 8409.91.10.40 | For vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704 | — |
| 8409.91.10.60 | For marine propulsion engines | — |
| 8409.91.10.80 | Other | — |
| 8409.91.30.00 | Aluminum cylinder heads | 2.5% |
| 8409.91.50 | Other | 2.5% |
| 8409.91.50.10 | Connecting rods | — |
| 8409.91.50.81 | Steel forgings | — |
| 8409.91.50.85 | Other | — |
| 8409.91.92 | For marine propulsion engines | 2.5% |
| 8409.91.92.10 | Connecting rods | — |
| 8409.91.92.90 | Other | — |
| 8409.91.99 | Other | 2.5% |
| 8409.91.99.10 | Connecting rods | — |
| 8409.91.99.90 | Other | — |
The tariff classification of a cam phaser rotor from Brazil
Request for Reconsideration of New York Ruling Letter N073512; Classification of cast iron ring carriers, also known as inserts, for use in spark-ignition engine pistons
Application for Further Review Protest No. 2402-12-150005; Tariff classification of Marine Propulsion Engine Panels
PARTS FOR SPARK-IGNITION INTERNAL COMBUSTION PISTON ENGINES FOR USE IN ROAD TRACTORS, MOTOR BUSES, AUTOMOBILES OR TRUCKS
Census Bureau export classification matching this HTS import code.
