U.S. imports of insulated wiring sets for vehicles, aircraft & ships (HS 854430) totaled $1.5B in August 2026, imported from 89 countries.
Importers of Insulated Wiring Sets for Vehicles, Aircraft & Ships paid $68.9M in duties in August 2026, an effective tariff rate of 4.52% of the $1.5B imported — duty actually collected as a share of that value, not the published tariff schedule.
Last updated: August 2026 dataAutomotive and transportation wiring harnesses — bundled, insulated cable assemblies that integrate ignition, sensor, and power circuits — are classified here and are subject to Section 301 tariff exposure depending on country of origin. Mexico dominates US supply, reflecting deep integration with North American vehicle assembly platforms, followed by Honduras and Vietnam as significant sources. Importers should verify country-of-origin rules carefully, as harness assembly is labor-intensive and production frequently spans multiple countries before final export. The single US tariff line under this heading is 8544300000.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
121.1K shipments/mo
Origin is determined by substantial transformation rules — typically where the harness is assembled and tested into its final form. Because wire drawing, insulation, and terminal crimping may occur in different countries, importers should obtain a detailed bill of materials and a manufacturer's affidavit to support the declared origin, especially given Section 301 exposure on Chinese-origin goods.
At the 10-digit US level, this heading consolidates into a single tariff line (8544300000) covering all insulated ignition and other wiring sets for vehicles, aircraft, and ships — there is no further subdivision by vehicle type or end-use application within the schedule.
HSChapter 85
Subheading 1 of 8 in heading 8544
Subheading 854430 · $1.5B of $3.8B
ImportsExports
Imports
$1.5BYoY · free account
Exports
$287.9MYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $16.5B of Insulated Wiring Sets for Vehicles, Aircraft & Ships.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8544300000 | Insulated Wiring Sets for Vehicles Ships Aircraft | $1.5B | 4.52% | 23.62% | $68.9M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8544300000 | Insulated Wiring Sets for Vehicles Ships Aircraft | $287.9M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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Imports · August 2026
origin
Mexico and Philippines together supply 75% of it. Vietnam pays 20.0% duty; Mexico 0.8%.
customs district
destination
entry
rate provision · imports
74.1% enters free of duty; duty collected equals 4.52% of total import value.