HS code for oil filter
The U.S. HS code for an oil filter is usually 8421.23.00.00 (car), with a 2.5% general duty and an estimated total of 15% from China and 15% from Vietnam once additional duties are added.
Estimates use tariff data as of October 22, 2026. The China and Vietnam estimates include Section 301: Forced labor action (12.5%). From China, Section 301: China list duty (7.5% or 25%) may also apply, up to 40% in total. Classifications and duty estimates are guidance based on the published HTSUS. The importer of record is responsible for the final classification.
Codes by variant
| Variant | HTS code | General duty | Est. from China |
|---|---|---|---|
| Car | 8421.23.00.00 | 2.5% | 15% |
- 8421.23.00.00: Oil or fuel filters for internal combustion engines
What decides the code
A car oil filter is filtering machinery for liquids, classified under heading 8421 in subheading 8421.23.00.00 as an oil filter for an internal combustion engine.
- The product is a filter for liquids, which places it in heading 8421.
- It is an oil filter, not a fuel filter, which points to subheading 8421.23.
- It is designed for an internal combustion engine, which is the use named in 8421.23.00.00.
Common mistakes
- Classifying a car oil filter under 8421.31 or other gas filter lines is wrong because the filter treats engine oil, a liquid.
- Putting the filter in a parts heading for the engine is wrong because heading 8421 covers the filter itself as filtering machinery.
Estimated U.S. duty by origin
- China
- 15% = 2.5% general + 12.5% Section 301: Forced labor actionMay also apply: Section 301: China list duty (7.5% or 25%). Up to 40%.
- Vietnam
- 15% = 2.5% general + 12.5% Section 301: Forced labor action
For HTS 8421.23.00.00, as a share of customs value, before fees. Check every measure for your entry with the tariff checker.
EU code and duty
- Car
- CN 8421 23 00, 1.7%
EU Combined Nomenclature 2026, third-country (erga omnes) duty. Preferential rates and EU trade remedy duties are not included.
Frequently asked questions
What is the HS code for an oil filter?
The U.S. HTS code for an oil filter is usually 8421.23.00.00 (car). The first six digits, 8421.23, are the international HS code.
What is the U.S. import duty on an oil filter from China?
The U.S. general duty on HTS 8421.23.00.00 is 2.5%. With the additional duties that apply to goods of China (Section 301: Forced labor action (12.5%)), the estimated total is 15% of customs value. Section 301: China list duty (7.5% or 25%) may also apply depending on the exact product. From Vietnam the estimate is 15%. Tariff data as of October 22, 2026.
Tariff schedule pages
Related products
Codes checked against the USITC Harmonized Tariff Schedule retrieved October 22, 2026. Additional duties reviewed October 22, 2026. This is an estimate: the importer of record is responsible for classification.