Mexico supplies 36.2% of U.S. imports of Parts for Spark-Ignition & Diesel Piston Engines, across 106 countries (year to date through August 2026).
HHI 1,787 of 10,000 · HHI 1,000–1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
106 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | Mexico | $405.8M | 37.7% | -- | 1.0% |
| 2 | Japan | $136.8M | 12.7% | -- | 6.3% |
| 3 | China | $123.2M | 11.5% | -- | 35.5% |
| 4 | Germany | $93.8M | 8.7% | -- | 9.2% |
| 5 | Canada | $78.8M | 7.3% | -- | 0.7% |
| 6 | South Korea | $43.8M | 4.1% | -- | 11.1% |
| 7 | India | $33.4M | 3.1% | -- | 11.4% |
| 8 | Brazil | $19.9M | 1.9% | -- | 31.4% |
| 9 | Italy | $16.3M | 1.5% | -- | 9.3% |
| 10 | South Africa | $13.4M | 1.3% | -- | 17.9% |
| 11 | United Kingdom | $12.4M | 1.2% | -- | 9.2% |
| 12 | Thailand | $10.9M | 1.0% | -- | 11.5% |
| 13 | Poland | $9.1M | 0.9% | -- | 8.8% |
| 14 | Taiwan | $6.9M | 0.6% | -- | 10.4% |
| 15 | Austria | $6.8M | 0.6% | -- | 10.3% |
| 16 | Sweden | $5.8M | 0.5% | -- | 13.0% |
| 17 | Turkey | $5.8M | 0.5% | -- | 11.9% |
| 18 | France | $5.8M | 0.5% | -- | 6.9% |
| 19 | Spain | $5.0M | 0.5% | -- | 5.9% |
| 20 | Philippines | $4.8M | 0.4% | -- | 12.5% |
| 21 | Hungary | $4.7M | 0.4% | -- | 9.9% |
| 22 | Netherlands | $4.2M | 0.4% | -- | 18.0% |
| 23 | Argentina | $3.9M | 0.4% | -- | 12.1% |
| 24 | Switzerland | $3.2M | 0.3% | -- | 12.5% |
| 25 | Vietnam | $2.7M | 0.3% | -- | 15.5% |
| 26 | Serbia | hidden | hidden | hidden | hidden |
| 27 | Czech Republic | hidden | hidden | hidden | hidden |
| 28 | Tunisia | hidden | hidden | hidden | hidden |
| 29 | Indonesia | hidden | hidden | hidden | hidden |
| 30 | Finland | hidden | hidden | hidden | hidden |
| 31 | Australia | hidden | hidden | hidden | hidden |
| 32 | Romania | hidden | hidden | hidden | hidden |
| 33 | Portugal | hidden | hidden | hidden | hidden |
| 34 | Slovakia | hidden | hidden | hidden | hidden |
| 35 | Morocco | hidden | hidden | hidden | hidden |
| 36 | Denmark | hidden | hidden | hidden | hidden |
| 37 | Belgium | hidden | hidden | hidden | hidden |
| 38 | Peru | hidden | hidden | hidden | hidden |
| 39 | Norway | hidden | hidden | hidden | hidden |
| 40 | Israel | hidden | hidden | hidden | hidden |
| 41 | New Zealand | hidden | hidden | hidden | hidden |
| 42 | Singapore | hidden | hidden | hidden | hidden |
| 43 | Saudi Arabia | hidden | hidden | hidden | hidden |
| 44 | Costa Rica | hidden | hidden | hidden | hidden |
| 45 | Malaysia | hidden | hidden | hidden | hidden |
| 46 | Panama | hidden | hidden | hidden | hidden |
| 47 | Greece | hidden | hidden | hidden | hidden |
| 48 | Colombia | hidden | hidden | hidden | hidden |
| 49 | Slovenia | hidden | hidden | hidden | hidden |
| 50 | Ireland | hidden | hidden | hidden | hidden |
Duty is the duty Census calculated on this month's imports for consumption from each country, as a share of their customs value. It applies the rates in force, additional duties such as Section 301, 232 and IEEPA included and claimed trade-agreement preferences netted out, so it is an observed rate rather than a statutory one. It is an estimate, not duty collected: antidumping and countervailing duties, fees and later refunds are not in it. YoY compares year-to-date value with the same months last year.