Caterpillar 3406E Diesel Engine

The Caterpillar 3406E is a 14.6L inline-6 compression-ignition diesel engine rated at 500 kW, commonly used in heavy-duty trucks and industrial applications. It falls under HTS 8408.90.90.30 due to its power output exceeding 373 kW but not exceeding 746 kW and classification as an other diesel engine not for vehicles or marine use.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8408.20.90Higher: 37.5% vs 35%

If designed for motor vehicles

Engines principally for propelling motor vehicles of Chapter 87 fall under 8408.20, regardless of power rating.

8408.10.00Higher: 37.5% vs 35%

If exceeding 746 kW

Higher power output shifts classification to the next power band subheading within the same engine type.

8502.31.00Higher: 37.5% vs 35%

If imported as complete generating set

Diesel engines sold with generators as packaged power units are classified in heading 8502 as generating sets.

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Import Tips & Compliance

Verify engine power rating with manufacturer's spec sheet for exact subheading fit; obtain EPA emissions certification for US import; ensure proper documentation of industrial end-use to avoid vehicle engine classification