Parts for use with compression-ignition internal combustion piston engines, not elsewhere specified

US trade by year

US imports were $3.76B in the 12 months to Aug 2026, up 49% on the 12 months to Aug 2017. US exports were $2.34B, up 3.5%. In January 2022 the HS 2022 revision moved some goods between this code and 8549.21, 8549.29, 8549.31 and 3 more, so part of a change across the dashed line can be the revision. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

• Mexico
• Germany
• China
• India
• All countries

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Average prices aren't shown because this product's lines are counted in different units.

The 3 largest suppliers had 59.0% of US imports over the last 12 months.

How the market is shifting

Mexico gained the most share: 25.4% of US imports over the last 12 months, up from 22.6% in the 12 months before. Brazil lost the most: 4.5%, down from 7.3%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

• Mexico
• Germany
• China
• India
• All countries

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

1. January–June 2026 · Duty paid: Mexico 27.9% → 2.0%, Germany 34.1% → 11.5%, China 72.8% → 35.2%, Brazil 38.2% → 19.0%, all countries 34.9% → 12.5%.
2. August–September 2025 · Duty paid: Mexico 10.6% → 27.7%, Germany 11.2% → 33.4%, China 58.6% → 72.8%, Brazil 10.6% → 41.0%, all countries 16.8% → 38.7%.
   • Adoption and Procedures of the Section 232 Steel and Aluminum Tariff Inclusions ProcessAug 19, 2025 · Bureau of Industry and Security
   • Imports of Automobiles, Automobile Parts, Civil Aircraft and Civil Aircraft Parts From the United Kingdom Under Executive Order 14309Jun 30, 2025 · International Trade Administration
3. March–April 2025 · Duty paid: Mexico 0.5% → 10.6%, Germany 1.3% → 10.9%, China 26.3% → 58.6%, Brazil 0.8% → 6.9%, all countries 4.8% → 15.0%.
4. June 2019 · Duty paid: China 11.2% → 25.6%.
5. October 2018 · Duty paid: China 1.2% → 10.9%.
   • Request for Comments Concerning Proposed Modification of Action Pursuant to Section 301: China's Acts, Policies, and Practices Related to Technology Transfer, Intellectual Property, and InnovationJul 17, 2018 · Office of the US Trade Representative

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 124 have reported 2025 so far.

The biggest market outside the US is Germany, which imported $3.85B of this product in 2025, 3.6% of that from the US.

The US supplies 55.9% of imports into Mexico, but under 10% into Germany, the United Kingdom and France.

Of these, imports into France grew fastest: up 17% from 2024 to 2025.

Related products

Other products under heading 8409: parts for spark-ignition reciprocating or rotary internal combustion piston engines and compression-ignition internal combustion piston engines. US trade over the 12 months to August 2026.