Under USMCA, motor vehicle parts must meet specific regional value content and net cost thresholds to qualify for preferential tariff treatment. Parts that fail to meet these thresholds are subject to MFN duty rates and potentially Section 232 measures, making detailed bill-of-materials analysis critical for importers sourcing from North American suppliers.

Exclusion requests under Section 232 for automotive parts generally require detailed product specifications, HTS classification, evidence that the part is not available domestically in sufficient quantity or quality, and information about the end-use application. The process is administered by the Department of Commerce, and approval is product- and requester-specific.