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NAICSSector 33
U.S. imports of other engine equipment (NAICS 333618) totaled $1.3B in July 2026, traded with 108 countries.
Importers of Other Engine Equipment paid $138.1M in duties in July 2026 — an effective duty rate of 14% on $1.0B in dutiable value, based on actual customs collections rather than the published tariff schedule. Other Engine Equipment imports of $1.3B in July 2026 ran 10% above the year-to-date monthly average of $1.2B.
Last updated: July 2026 dataCarburetors, superchargers, turbochargers, intake manifolds, and other ancillary engine components that do not fit neatly into turbine or transmission categories are captured in this residual NAICS class — a grouping that reflects the diversity of the modern engine supply chain. Many of these parts are sourced globally and may be subject to Section 301 tariffs when originating from China, or to antidumping orders that have historically targeted specific engine component categories. Importers should be alert to the 'parts and accessories' classification rules under HTS Chapter 84, which can redirect components to a different subheading than the finished engine they serve.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
39.6K shipments/mo
Turbochargers and superchargers are generally classified as parts or accessories of internal combustion engines under Chapter 84 of the HTS, though the specific 10-digit subheading depends on the engine type they serve (spark-ignition vs. compression-ignition) and whether they are imported as complete units or as component parts. Misclassification between these subheadings is a common audit finding.
HTS rules for parts and accessories require that a component be identifiable as suitable for use solely or principally with a specific machine. If a component has broad applicability across engine types, it may be classified under a general parts heading rather than a machine-specific one — a distinction that can affect both the duty rate and trade-remedy applicability. Detailed technical documentation supporting the principal-use determination is advisable.
National industry 1 of 4 in naics industry 33361
National industry 333618 · $1.3B of $2.8B
ImportsExports
Imports
$1.3BYoY · Pro
Exports
$1.2BYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
customs district
Census does not publish district detail for this classification system.
destination
None recorded for this period.
entry
Census does not publish port detail for this classification system.
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