TradeCalc Hub中文
HS code reference

HS Code for Anti-knock preparations: 3811.19

Anti-knock preparations; other than those based on lead compounds

Start calculating

Review start

3811.19

Use case

Pre-quote review

Next step

Calculate duty

Estimates are for planning only. Confirm final classification and rates with a licensed customs broker or the relevant customs authority.

Review Notes

Classification boundary

Review material, use, construction, and accessories

Quote workflow

Estimate first, then confirm with official tariff or broker

Is 3811.19 always the HS code for Anti-knock preparations?

Anti-knock preparations can be reviewed from 3811.19, but the final code depends on full product details, material, use, and destination tariff rules.

How do I estimate US import cost with this code?

Use the tariff calculator with origin, customs value, freight, and insurance to estimate landed cost.

Is this a binding classification opinion?

No. This page is for pre-quote planning and does not replace customs rulings, official tariff data, or licensed broker advice.

Related HS code pages

3811.11

Anti-knock preparations

Anti-knock preparations; based on lead compounds

3811.21

Lubricating oil additives

Lubricating oil additives; containing petroleum oils or oils obtained from bituminous minerals

3811.29

Lubricating oil additives

Lubricating oil additives; not containing petroleum oils or oils obtained from bituminous minerals

3811.90

Oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations,

Oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations, other prepared additives for mineral oils or liquids used as mineral oils (including gasoline), n.e.c. in heading no. 3811