Caterpillar G3406 Natural Gas Engine from Japan
The Caterpillar G3406 is a high-performance spark-ignition reciprocating internal combustion engine designed to run on natural gas, commonly used in oilfield and industrial power generation applications. It falls under HTS 8407.90.90.10 as a gas engine other than for vehicles, featuring advanced fuel management for efficient combustion of natural gas. This engine's robust design supports continuous duty cycles in stationary setups.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify engine displacement and fuel type certification to confirm classification under gas engines; obtain EPA emissions compliance documentation for natural gas models
• Common pitfall: misclassifying as diesel due to similar appearance—check fuel system specs