Importers of HS 8413.91 (of fuel-injection pumps for compression-ignition engines) from Thailand actually paid 24.86% on the taxed portion of the value in 2026-06 — 23.57% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 2.5%. Over the window the rate on the taxed portion moved null% → 24.86%, with the largest single step +12.4pp in 2025-05. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 2.5% — importers actually paid 24.86%, so the trade-war overlay added 22.4 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8413.91", origin: "Thailand") · see it at trimtabist.com/tariffs
HS 8413.91. The schedule base rate is 2.5%; importers from Thailand actually paid 24.86% on the dutiable value in 2026-06 — the trade-war overlay added 22.4 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 24.86% (2026-06), largest single step +12.4pp in 2025-05.
Thailand's lower duty (23.57% vs 36.38%) lets it price up to 10.4% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $6.96/kg vs $33.02/kg (duty in, freight out).
All goods from Thailand · the whole tariff ledger · 3 CBP rulings cite this code · reproduce: tariff_story(hs: "8413.91", origin: "Thailand") via /connect. Not customs or legal advice.