# United States tariff lines under HS 3811.19

> The United States tariff splits HS 3811.19 (anti-knock preparations: Other) into 1 national line: 3811.19.00.00 (other). The general (MFN) duty is 6.5% on this line.

Source: https://border.bot/countries/united-states/hs-codes/381119
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 38](https://border.bot/countries/united-states/hs-codes/38) / [3811.19](https://border.bot/countries/united-states/hs-codes/381119)

## Key facts

- HS subheading: [3811.19](https://border.bot/hs-codes/381119)
- Duty (MFN): 6.5%
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 38: Miscellaneous chemical products

## United States lines under 3811.19

The United States tariff splits HS 3811.19 (anti-knock preparations: Other) into 1 national line: 3811.19.00.00 (other).

The general (MFN) duty is 6.5% on this line.

- [3811.19.00.00](https://border.bot/countries/united-states/hs-codes/3811190000) Antiknock preparations, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 3811.19 yet.

- [The Harmonized System text for 3811.19](https://border.bot/hs-codes/381119)

- Previous subheading: [3811.11](https://border.bot/countries/united-states/hs-codes/381111) Based on lead compounds
- Next subheading: [3811.21](https://border.bot/countries/united-states/hs-codes/381121) Antiknock 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

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3811.19?

The United States tariff splits HS 3811.19 (anti-knock preparations: Other) into 1 national line: 3811.19.00.00 (other).

### What is the duty on HS 3811.19 in the United States?

The general (MFN) duty is 6.5% on this line.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/381119.json