Low-Sulfur No. 4 Generator Fuel Oil

No. 4 diesel blend with biodiesel for backup generators, ≤500 ppm sulfur, ≥25° API, 45-125 SUS viscosity. Meets HTS 2710.20.10.15 criteria for low-sulfur, biodiesel-containing residual/distillate fuel oils.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+25.0%25%
🇲🇽MexicoFreeFree
🇨🇦CanadaFreeFree
🇩🇪GermanyFreeFree
🇯🇵JapanFreeFree

Alternative Classifications

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

2710.20.15Same rate: 25%

If testing <25° API

Heavier residual oils <25° API classify in 2710.20.15

2710.99Lower: 17% vs 25%

If waste or contaminated oils

Waste oils excluded from clean fuel subheadings per hierarchy

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Certify compliance with MARPOL Annex VI sulfur caps for marine-adjacent uses

Document API gravity via ASTM D287 to confirm ≥25° threshold

Avoid bulk mixing post-import; pre-blended composition must match entry docs

Related Products under HTS 2710.20.10.15

No. 4 Low-Sulfur Marine Fuel Oil

A No. 4-type distillate fuel oil with Saybolt Universal viscosity between 45-125 seconds at 37.8°C, testing 25° API or more, and containing ≤500 ppm sulfur, designed for marine bunker use. It falls under HTS 2710.20.10.15 due to its specific viscosity, gravity, biodiesel content (≥70% petroleum oils), and low sulfur specification for environmental compliance.

B20 No. 4 Low-Sulfur Fuel Oil Blend

20% biodiesel (B20) blended No. 4 fuel oil with ≤500 ppm sulfur, 25°+ API gravity, and 45-125 SUS at 37.8°C for industrial burners. Classified in 2710.20.10.15 for biodiesel fuel oils meeting exact physical specs.

No. 4 Ultra-Low Sulfur Industrial Fuel Oil

Industrial-grade No. 4 fuel oil blended with biodiesel, featuring ≤500 ppm sulfur, 25°+ API gravity, and 45-125 SUS viscosity at 37.8°C for use in boilers and heavy machinery. Classified under 2710.20.10.15 for its low-sulfur profile, specific physical properties, and predominant petroleum oil composition.

Biodiesel-Blended No. 4 Heating Fuel Oil

A low-sulfur (≤500 ppm) No. 4 heating oil with biodiesel, 25°+ API, and viscosity 45-125 SUS at 37.8°C, used in commercial heating systems. HTS 2710.20.10.15 applies due to its fuel oil specs, biodiesel inclusion, and sulfur limit per subheading requirements.

Eco No. 4 Boiler Fuel Oil ULS

Ultra-low sulfur (≤500 ppm) No. 4 boiler fuel with biodiesel, viscosity 45-125 SUS, ≥25° API, for stationary combustion. HTS 2710.20.10.15 due to sulfur limit and biodiesel in ≥70% petroleum base.