Heading 8408

HTS code 8408 — Compression-ignition internal combustion piston engines (diesel or semi-diesel engines)

Chapter
84 — Machinery and mechanical appliances
Tariff lines
17
General duty
General duty rate of 2.5%, with 9 duty-free lines

Tariff lines under heading 8408

Full 10-digit codes with their general (MFN) duty rates. The correct line depends on the product's material, construction, and use.

HTS codeDescriptionGeneral rateUnit
8408.10.0005Not exceeding 111.9 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Marine propulsion engines)2.5%No.
8408.10.0015Exceeding 111.9 kW but not exceeding 149.2 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Marine propulsion engines)2.5%No.
8408.10.0020Exceeding 149.2 kW but not exceeding 223.8 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Marine propulsion engines)2.5%No.
8408.10.0030Exceeding 223.8 kW but not exceeding 373 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Marine propulsion engines)2.5%No.
8408.10.0040Exceeding 373 kW but not exceeding 746 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Marine propulsion engines)2.5%No.
8408.10.0050Exceeding 746 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Marine propulsion engines)2.5%No.
8408.20.1040Not exceeding 37.3 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Engines of a kind used for the propulsion of vehicles of chapter 87 > To be installed in tractors suitable for agricultural use)FreeNo.
8408.20.1080Exceeding 37.3 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Engines of a kind used for the propulsion of vehicles of chapter 87 > To be installed in tractors suitable for agricultural use)FreeNo.
8408.20.2000To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704 (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Engines of a kind used for the propulsion of vehicles of chapter 87)2.5%No.
8408.20.9000Other (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Engines of a kind used for the propulsion of vehicles of chapter 87)2.5%No.
8408.90.1040Not exceeding 37.3 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Other engines > To be installed in agricultural or horticultural machinery or equipment)FreeNo.
8408.90.1080Exceeding 37.3 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Other engines > To be installed in agricultural or horticultural machinery or equipment)FreeNo.
8408.90.9010Not exceeding 149.2 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Other engines > Other)FreeNo.
8408.90.9020Exceeding 149.2 kW but not exceeding 373 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Other engines > Other)FreeNo.
8408.90.9030Exceeding 373 kW but not exceeding 746 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Other engines > Other)FreeNo.
8408.90.9040Exceeding 746 kW but not exceeding 1,119 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Other engines > Other)FreeNo.
8408.90.9050Exceeding 1,119 kW (Compression-ignition internal combustion piston engines (diesel or semi-diesel engines) > Other engines > Other)FreeNo.

Documents required to import under 8408

Customs paperwork typically required to import these goods into the United States. Conditional items depend on shipment value, transport mode, or origin.

  • Commercial InvoiceRequired
  • Packing ListRequired
  • Bill of Lading / Airway BillRequired
  • CBP Entry Summary (7501)Required

    Prepared and filed by your customs broker

  • CBP Entry / Release (3461)Required

    Prepared and filed by your customs broker

  • Customs Bond (CBP 301)Conditional

    Required for formal entries — generally shipments valued over $2,500

    Single-entry or continuous bond, obtained through your broker or a surety

  • Importer Security Filing (ISF "10+2")Conditional

    Required for ocean freight only

    Filed electronically at least 24 hours before loading at the foreign port

  • Importer ID Input Record (CBP 5106)Conditional

    Required to establish or update your importer-of-record number with CBP

    One-time setup for a new importer; not filed per shipment

  • Entry Manifest (CBP 7533)Conditional

    Alternative to the 3461 for informal, low-value, or contiguous-country entries

  • FCC Declaration (Form 740)Conditional

    Required for electronic devices that emit radio frequency

  • FDA Radiation Declaration (Form 2877)Conditional

    Required for products that emit radiation (X-ray, laser, microwave, etc.)

Common questions

What is HTS code 8408?
HTS heading 8408 covers compression-ignition internal combustion piston engines (diesel or semi-diesel engines). It sits in Chapter 84 (machinery and mechanical appliances) of the US Harmonized Tariff Schedule and contains 17 tariff lines.
What is the duty rate for HTS 8408?
General duty rate of 2.5%, with 9 duty-free lines. The general rate applies to most-favoured-nation trading partners; goods from countries with a free trade agreement may qualify for a reduced or duty-free special rate.
How many digits does a full HTS code have?
US import entries require the full 10-digit HTS code. Heading 8408 is the first four digits — the remaining six narrow it down to the specific product, which is what determines the duty rate you actually pay.

Related headings in Chapter 84