HS code 381121: Additives for Lubricating Oils
- Covers:
- Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers…
- Listed US duty:
- 6.5% (US general rate, HTS 2026)
Official description
Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals
Find or check your HS code
Suggestions from the HS index, not a customs ruling
Describe what you ship: what it is, what it is made of, how it is processed and what it is used for. I narrow it down against the real HS hierarchy, or check a code you were given.
What 381121 covers and what it doesn’t
Official text: Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils › Additives for lubricating oils › Containing petroleum oils or oils obtained from bituminous minerals.
Nearby codes to check
- Heading 3811 Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils: every subheading side by side.
- 381111 Anti-knock preparations — Based on lead compounds
- 381119 Anti-knock preparations — Other
- 381129 Additives for lubricating oils — Other
- 381190 Other
US duty rate
6.5%
General (MFN) rate in the US Harmonized Tariff Schedule, 2026 edition. A range means the rate depends on the 8-digit US line your product falls under. Extra duties such as Section 301, Section 232 or anti-dumping orders can apply on top, depending on origin. Check the lines on hts.usitc.gov. Not legal advice.
Who imports under 381121
EximAgent lists companies with recorded shipments under this code, built from customs records, with who they buy from and how often. See importers of 381121 →
Common questions
- What is HS code 381121?
- Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Additives for lubricating oils : Containing petroleum…
- What duty rates apply to 381121?
- Listed duty rates range from 6.5% across 1 country rate.
Browse all of Chapter 38: Miscellaneous chemical products →
Go beyond the code
Classify a product and check the duty for your destination with the CLI, then keep researching in your own agent.