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SITCSection 7
U.S. imports of ignition wiring sets & vehicle wiring harnesses (SITC 77313) totaled $1.4B in April 2026, traded with 81 countries.
Importers of Ignition Wiring Sets & Vehicle Wiring Harnesses paid $52.5M in duties in April 2026 — an effective duty rate of 16% on $320.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataWiring harnesses and ignition sets engineered for automobiles, aircraft, and marine vessels are purpose-built assemblies that integrate multiple conductors, connectors, and protective sleeving into a single routed unit. The automotive sector dominates trade volume in this heading, with harness manufacturing concentrated in low-cost labor markets that supply global OEM assembly plants. Mexico is a dominant supplier to the US market given its proximity and deep integration into North American automotive supply chains under USMCA, making cross-border logistics and rules-of-origin compliance central concerns for automotive procurement teams.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Under USMCA, automotive wiring harnesses must meet specific regional value content and tariff classification change requirements to qualify for preferential duty treatment. The rules are detailed and product-specific; importers should work with a licensed customs broker or trade attorney to confirm that their harnesses meet the applicable USMCA automotive rules before claiming preference.
Yes—the heading explicitly covers wiring sets of a kind used in vehicles, aircraft, or ships. Automotive harnesses are the dominant trade flow, but aircraft wiring looms and marine ignition sets are also classified here, provided they are purpose-designed for those applications rather than general electrical wiring.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $990.7M | $94.6M | -$896.2M |
| VIETNAM | $88.2M | $425K | -$87.8M |
| CANADA | $5.8M | $69.2M | +$63.4M |
| PHILIPPINES | $69.7M | $1.2M | -$68.5M |
| HONDURAS | $67.4M | $51K | -$67.3M |
Monthly import values over time