HS code · 6-digit subheading

HS Code 3819.00 – Hydraulic fluids; for brakes and other prepared liquids for hydraulic transmission, not containing or containing less than 70% by weight of petroleum oils or oils obtained from bituminous minerals

HS code 3819.00 is the 6-digit subheading for hydraulic fluids, for brakes and other prepared liquids for hydraulic transmission, not containing or containing less than 70% by weight of petroleum oils or oils obtained from bituminous minerals. It is used for DOT 3 brake fluid, DOT 4 brake fluid, DOT 5.1 brake fluid, synthetic hydraulic fluid and biodegradable hydraulic fluid.

What HS 3819.00 covers

This HS code encompasses specialized hydraulic fluids, including brake fluids and other prepared liquids for hydraulic transmission, characterized by not containing or containing less than 70% by weight of petroleum oils or oils obtained from bituminous minerals. These fluids are crucial for efficient power transmission in automotive, aerospace, and industrial hydraulic systems. Importers and exporters include automotive manufacturers, industrial machinery producers, and chemical companies specializing in lubricants and functional fluids. Trade focuses on performance specifications, safety standards (e.g., DOT ratings for brake fluids), and environmental regulations, as many are synthetic or biodegradable formulations designed for specific operating conditions.

Covers
  • DOT 3 brake fluid
  • DOT 4 brake fluid
  • DOT 5.1 brake fluid
  • Synthetic hydraulic fluid
  • Biodegradable hydraulic fluid
  • Aircraft hydraulic fluid
  • Power steering fluid (non-petroleum based)
Examples
  • Castrol DOT 4
  • Bosch DOT 4
  • Mobil SHC 500 Series
  • Pentosin CHF 11S
  • ATE SL.6

Codes often confused with 3819.00

Common mistake. Can be confused with petroleum-based lubricating oils (2710) or other prepared lubricants (3403) if the specific hydraulic transmission use and low petroleum content aren't emphasized. The 'less than 70% petroleum oils' criterion is critical.

27.10Petroleum oils and oils from bituminous minerals, not crude; preparations n.e.c, containing by weight 70% or more of petroleum oils or oils from bituminous minerals; these being the basic constituents of the preparations; waste oils34.03Lubricating preparations and those used in oil or grease treatment of textile and similar materials; excluding preparations containing 70% or more (by weight) of petroleum or bituminous mineral oils

Top exporters and importers of HS code 381900, 2025

In 2025, the largest exporter of HS code 381900 in UN Comtrade data was Germany, with 26% of world exports; the largest importer in UN Comtrade data was Germany, with 7.8% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Top exporters 2025 · share of world exports

  1. 1 Germany $321M
  2. 2 United States $221M
  3. 3 United Kingdom $118M

World total: $1.2B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Germany $95M
  2. 2 France $78M
  3. 3 China $64M

World total: $1.2B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM code for 3819.00

Brazil does not split HS 3819.00: its NCM code is 3819.00.00.

  1. 3819.00.00 Hydraulic fluids with under 70 % petroleum oilFluidos para freios (travões) hidráulicos e outros líquidos preparados para transmissões hidráulicas, que não contenham óleos de petróleo nem de minerais betuminosos, ou que os contenham em proporção inferior a 70 %, em peso.

All Brazil NCM codes in heading 38.19 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

Questions about HS 3819.00

What is HS code 381900?

HS code 381900 is a 6-digit subheading in the Harmonized System that covers: Hydraulic fluids; for brakes and other prepared liquids for hydraulic transmission, not containing or containing less than 70% by weight of petroleum oils or oils obtained from bituminous minerals. This HS code encompasses specialized hydraulic fluids, including brake fluids and other prepared liquids for hydraulic transmission, characterized by not containing or containing less than 70% by weight of petroleum oils or oils obtained from bituminous minerals. These fluids are crucial for efficient power transmission in automotive, aerospace, and industrial hydraulic systems. Importers and exporters include automotive manufacturers, industrial machinery producers, and chemical companies specializing in lubricants and functional fluids. Trade focuses on performance specifications, safety standards (e.g., DOT ratings for brake fluids), and environmental regulations, as many are synthetic or biodegradable formulations designed for specific operating conditions.

What products fall under HS code 381900?

DOT 3 brake fluid, DOT 4 brake fluid, DOT 5.1 brake fluid, synthetic hydraulic fluid, biodegradable hydraulic fluid, aircraft hydraulic fluid, power steering fluid (non-petroleum based)

What are common misclassifications for HS code 381900?

Can be confused with petroleum-based lubricating oils (2710) or other prepared lubricants (3403) if the specific hydraulic transmission use and low petroleum content aren't emphasized. The 'less than 70% petroleum oils' criterion is critical.

Which countries are the top exporters of goods under HS code 381900?

In 2025, the top exporters of HS code 381900 in UN Comtrade data were Germany ($321M, 26% of world exports), the United States ($221M) and the United Kingdom ($118M). World exports came to about $1.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of goods under HS code 381900?

In 2025, the top importers of HS code 381900 in UN Comtrade data were Germany ($95M, 7.8% of world imports), France ($78M) and China ($64M). World imports came to about $1.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

How is HS code 381900 structured?

HS code 381900 is a 6-digit subheading under the Harmonized System. The first 2 digits (38) identify the chapter, digits 3-4 (19) identify the heading, and digits 5-6 (00) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 381900?

In Brazil, HS code 381900 is NCM 3819.00.00. The last two digits are 00 because Brazil does not split this HS code further.