What HS code 3811.11 covers
HS code 3811.11 classifies anti-knock preparations; based on lead compounds. It is a subheading of heading 3811 (Anti-knock preparations, oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations and the like, for mineral oils (including gasoline) or other liquids used for the same purposes), in chapter 38 (Chemical products n.e.c.), section VI of the Harmonized System. These six digits are identical in every country that uses the HS.
Classification path
Import duty for 3811.11
Base MFN rate only. Section 301 and 2025 IEEPA tariffs can stack on top for goods from China.
Source: HTSUS / CBP
Erga-omnes (third-country) MFN rate. Import VAT of 17 to 27 percent by country, and any anti-dumping measures, apply separately.
Source: TARIC
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Related codes in heading 3811
Not quite the right fit? These subheadings sit under the same heading and are the most common alternatives to 3811.11.
- 3811.19 Anti-knock preparations; other than those based on lead compounds
- 3811.21 Lubricating oil additives; containing petroleum oils or oils obtained from bituminous minerals
- 3811.29 Lubricating oil additives; not containing petroleum oils or oils obtained from bituminous minerals
- 3811.90 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
Confirm the code for your exact product
A 6-digit subheading still covers a range of products. The wrong code at the border can mean overpaying duty, a delayed shipment, or a penalty. Describe your exact item and HS Mate confirms whether 3811.11 is right, with the duty rate and an audit trail your customs broker can accept.