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Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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HS 8511.90

Parts for electrical ignition or starting equipment used for internal combustion engines; parts for generators and cut-outs used with such equipment

In short

  • The US imported $328.1M of this product over the 12 months to August 2026, down 9.7% on the year before.
  • Japan is the largest supplier, with 52.2% of US imports; Mexico is next, with 8.7%.
  • Duty paid averaged 12.8% of the value of imports in August 2026, down 10.1 points on a year earlier.
  • Mexico is gaining share: 10.5% over the last 12 months, up from 9.2%.
  • US exports were $149.8M over the last 12 months; the largest market is Mexico, with 26.4%.

US imports, Aug 2026

$27.7M

↓ −6.9% vs Aug 2025

Last 12 months

$328.1M

↓ −9.7% vs the 12 months before

Average duty paid

12.8%

↓ −10.1 pts vs Aug 2025

Top supplier

Japan

52.2% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted. 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.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugDuty ↓
Show the numbers
MonthUS imports
August 2025$29.8M
September 2025$32.8M
October 2025$28.6M
November 2025$27.5M
December 2025$24.0M
January 2026$25.4M
February 2026$21.7M
March 2026$29.5M
April 2026$25.4M
May 2026$23.3M
June 2026$31.4M
July 2026$30.6M
August 2026$27.7M

What changed

  • US imports were $27.7M in August 2026, down 9.3% from July 2026 and down 6.9% from August 2025.
  • Over the 12 months to August 2026 they totalled $328.1M, down 9.7% on the 12 months before.
  • Biggest moves in market share since July 2026: Turkey up from 2.2% to 5.0%, China down from 9.6% to 7.3%.
  • Duty paid on imports from Thailand rose from 5.8% to 10.6% of their value since July 2026.
  • Duty paid on imports from Turkey rose from 5.9% to 9.0% of their value since July 2026.

US trade by year

US imports were $328.1M in the 12 months to Aug 2026, down 14% on the 12 months to Aug 2017. US exports were $149.8M, down 32%. 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.

2017201820192020202120222023202420252026HS 2022China ↑Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$381.1M
12 months to Aug 2018$385.3M
12 months to Aug 2019$423.4M
12 months to Aug 2020$355.4M
12 months to Aug 2021$350.9M
12 months to Aug 2022$333.0M
12 months to Aug 2023$360.7M
12 months to Aug 2024$350.2M
12 months to Aug 2025$363.2M
12 months to Aug 2026$328.1M
  • Japan
  • Mexico
  • China
  • Thailand
  • All countries
Share of US imports
Show the numbers
PeriodJapanMexicoChinaThailand
12 months to Aug 201743.1%8.5%18.9%1.5%
12 months to Aug 201844.2%7.6%17.1%1.2%
12 months to Aug 201953.2%8.1%12.8%0.9%
12 months to Aug 202060.7%6.8%9.2%1.0%
12 months to Aug 202153.6%7.4%11.0%2.4%
12 months to Aug 202248.5%8.3%13.9%2.9%
12 months to Aug 202346.2%8.3%9.8%2.7%
12 months to Aug 202451.5%7.2%8.8%5.2%
12 months to Aug 202551.4%9.2%9.2%6.5%
12 months to Aug 202648.4%10.5%9.3%6.0%
Duty paid, % of value
Show the numbers
PeriodJapanMexicoChinaThailandAll countries
12 months to Aug 20172.5%0.2%2.5%0.5%1.9%
12 months to Aug 20182.5%0.4%2.5%0.8%1.9%
12 months to Aug 20192.5%0.5%14.2%0.8%3.6%
12 months to Aug 20202.5%0.4%26.9%0.8%4.5%
12 months to Aug 20212.5%0.5%27.0%0.6%4.7%
12 months to Aug 20222.5%0.4%27.2%0.8%5.2%
12 months to Aug 20232.5%0.7%27.1%0.6%4.5%
12 months to Aug 20242.5%0.7%27.1%0.2%4.2%
12 months to Aug 20259.0%2.2%41.7%4.1%10.6%
12 months to Aug 202612.9%2.1%49.7%20.4%16.5%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$328.1M−9.7%16.5%+5.8 pts$149.8M−1.6%
12 months to Aug 2025$363.2M+3.7%10.6%+6.4 pts$152.2M−13%
12 months to Aug 2024$350.2M−2.9%4.2%−0.3 pts$174.8M−3.2%
12 months to Aug 2023$360.7M+8.3%4.5%−0.7 pts$180.5M−20%
12 months to Aug 2022HS 2022 revision$333.0M−5.1%5.2%+0.5 pts$224.4M+20%
12 months to Aug 2021$350.9M−1.3%4.7%+0.2 pts$187.4M+32%
12 months to Aug 2020$355.4M−16%4.5%+0.9 pts$142.4M−25%
12 months to Aug 2019$423.4M+9.9%3.6%+1.6 pts$189.6M−2.5%
12 months to Aug 2018$385.3M+1.1%1.9%+0.1 pts$194.5M−11%
12 months to Aug 2017$381.1M1.9%$218.9M

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.

CountryUS importsShareAverage priceDuty paidLast 13 months
Japan$14.5M52.2%+4.5 ptsn/a12.4%−11.2 pts
Mexico$2.4M8.7%−2.5 ptsn/a1.0%−1.5 pts
China$2.0M7.3%−0.9 ptsn/a44.2%−17.7 pts
India$1.9M6.7%−0.2 ptsn/a4.9%−20.2 pts
Thailand$1.4M5.2%−4.1 ptsn/a10.6%−10.0 pts
Turkey$1.4M5.0%+4.1 ptsn/a9.0%−18.5 pts
Canada$895K3.2%0.0 ptsn/a0.2%−2.1 pts
Korea, South$888K3.2%+1.3 ptsn/a10.0%−9.9 pts
Other countries (24)$2.3M8.5%+0.3 ptsn/a16.0%+0.9 pts
All countries$27.7M100.0%n/a12.8%−10.1 pts

The 3 largest suppliers had 68.2% of US imports over the last 12 months.

How the market is shifting

Mexico gained the most share: 10.5% of US imports over the last 12 months, up from 9.2% in the 12 months before. Japan lost the most: 48.4%, down from 51.4%. 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.

  • Japan
  • Mexico
  • China
  • Thailand
  • All countries
Share of US imports
Show the numbers
MonthJapanMexicoChinaThailand
September 202452.2%7.9%7.4%8.1%
October 202452.5%8.1%8.8%8.3%
November 202459.7%10.0%8.4%2.1%
December 202446.1%7.6%11.5%9.7%
January 202551.7%7.8%12.0%6.6%
February 202540.0%9.1%10.5%6.9%
March 202552.4%10.0%9.2%3.7%
April 202547.5%8.1%9.9%10.8%
May 202558.0%8.9%7.6%7.1%
June 202553.3%11.1%7.3%1.6%
July 202553.0%11.4%9.6%2.9%
August 202547.7%11.2%8.2%9.3%
September 202553.7%10.5%7.7%6.8%
October 202548.8%13.6%9.4%6.1%
November 202547.1%11.2%8.0%5.0%
December 202545.3%9.7%10.4%6.0%
January 202640.5%12.4%11.3%7.2%
February 202645.9%13.8%10.9%5.3%
March 202645.3%11.9%10.5%5.2%
April 202651.1%11.5%7.1%5.8%
May 202641.6%9.8%10.7%5.0%
June 202651.8%6.9%9.2%9.3%
July 202653.4%7.1%9.6%5.0%
August 202652.2%8.7%7.3%5.2%
Duty paid, % of value
Show the numbers
MonthJapanMexicoChinaThailandAll countries
September 20242.5%0.3%27.3%1.8%4.1%
October 20242.5%0.3%24.9%2.0%4.3%
November 20242.5%0.4%26.1%2.0%4.0%
December 20242.5%0.2%26.3%2.0%5.1%
January 20252.5%1.3%27.2%1.6%5.2%
February 20252.5%0.8%26.4%2.1%4.5%
March 20252.5%6.4%43.2%1.9%6.5%
April 20252.3%4.5%54.8%0.5%7.7%
May 202513.6%4.5%64.4%0.3%16.1%
June 202523.7%2.4%61.4%12.7%22.3%
July 202523.9%0.9%62.2%18.2%22.7%
August 202523.6%2.5%61.9%20.6%22.9%
September 202518.1%1.0%61.6%26.6%21.3%
October 202513.7%1.0%61.6%27.0%19.4%
November 202513.4%1.4%55.3%26.9%18.6%
December 202513.7%0.9%51.5%27.1%18.8%
January 202613.1%3.4%53.4%25.8%19.7%
February 202612.5%4.7%51.4%26.4%17.7%
March 202611.5%3.2%42.5%22.6%15.5%
April 202611.4%2.2%40.2%24.9%13.5%
May 202611.4%1.6%45.2%11.8%14.9%
June 202611.3%2.6%44.1%5.7%13.1%
July 202611.1%1.7%43.0%5.8%12.5%
August 202612.4%1.0%44.2%10.6%12.8%

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. November 2025–January 2026 · Duty paid: Japan 20.9% → 13.2%, China 58.5% → 47.0%.
  2. April–June 2025 · Duty paid: Japan 2.5% → 23.6%, China 26.9% → 61.8%, all countries 5.9% → 22.4%.
  3. June 2019 · Duty paid: China 12.7% → 26.4%.
  4. September 2018 · Duty paid: China 2.4% → 12.0%.

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. Tacoma, WA$72.1M · 22.0%
  2. Los Angeles, CA$69.0M · 21.0%
  3. Newark, NJ$32.4M · 9.9%
  4. Long Beach, CA$24.9M · 7.6%
  5. Chicago, IL$23.6M · 7.2%

Where US exports go

US exports were $13.3M in August 2026, up 12% from August 2025, and $149.8M over the last 12 months, down 1.6% on the 12 months before. Fastest-growing market with 3% or more of US exports: Netherlands, up 272%.

MarketLast 12 monthsSharevs 12 months before
Mexico$39.5M26.4%−27%
Canada$14.3M9.5%+14%
China$13.6M9.1%−4.1%
France$12.3M8.2%+29%
India$9.7M6.5%−1.3%
Thailand$7.3M4.9%+28%
Malaysia$6.6M4.4%+262%
Netherlands$5.2M3.5%+272%
Other countries (108)$41.3M27.6%−0.3%
All countries$149.8M100.0%−1.6%

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; 123 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

MarketImportsvs year beforeFrom the USUS share
Mexico$375.8Min 2025+0.4%$37.6M10.0%
Thailand$264.7Min 2025−2.5%$6.5M2.5%
Hungary$220.5Min 2025−25%$10K0.0%
Japan$143.6Min 2025+9.4%$23.3MUS records $1.9M16.2%
Turkey$141.0Min 2025+22%$830K0.6%
China$139.4Min 2025−19%$11.8M8.4%
Brazil$132.2Min 2025+12%$3.6M2.7%
India$106.3Min 2025+11%$6.6M6.2%

The biggest market outside the US is Mexico, which imported $375.8M of this product in 2025, 10.0% of that from the US.

Of these, imports into Turkey grew fastest: up 22% from 2024 to 2025.

Other products under heading 8511: electrical ignition or starting equipment used for spark-ignition or compression-ignition internal combustion engines; generators etc. therefor; parts. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Internal combustion engine starter motors and dual purpose starter-generatorsHS 8511.40$1.44B$584.3M
Internal combustion engine generators, nes0iHS 8511.50$1.41B$536.0M
Internal combustion engine spark plugsHS 8511.10$588.9M$367.9M
Internal combustion engine distributors and ignition coilsHS 8511.30$514.9M$238.4M
Electrical ignition or starting equipment used for internal combustion engines, not elsewhere specified, and equipment used in conjunction with such engines, not elsewhere specifiedHS 8511.80$107.0M$153.1M
Internal combustion engine ignition magnetos, magneto-dynamos and magnetic flywheelsHS 8511.20$15.3M$24.7M
About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity, across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

Try bamboo cutting boards, green coffee or 7318.15