Standard International Trade Classification
U.S. imports of Parts for Compression-Ignition Internal Combustion Piston Engines, N.E.S. (SITC 71392) totaled $376.0M in August 2026, imported from 97 countries.
Importers of Parts for Compression-Ignition Internal Combustion Piston Engines, N.E.S. paid $50.4M in duties in August 2026, an average duty rate of 13.19% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Parts for Compression-Ignition Internal Combustion Piston Engines, N.E.S. imports of $376.0M in August 2026 ran 11% above the year-to-date monthly average of $337.7M.
Last updated: August 2026 dataComponents designed for use solely or principally with diesel and semi-diesel compression-ignition engines — such as fuel injection systems, turbocharger housings, diesel-specific pistons, and cylinder liners — are essential inputs for the commercial vehicle, agricultural, construction, and marine industries. Classification here requires confirming that the part's primary application is a compression-ignition engine rather than a spark-ignition one, with the 'solely or principally' test applied the same way as for SITC 71391. Given the breadth of diesel engine applications across sectors, this heading sees substantial trade volume in both OEM supply chains and the independent aftermarket.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
16.3K import shipments a month
Fuel injectors and common-rail components designed principally for diesel engines are generally classified under SITC 71392 as parts suitable for use with compression-ignition engines. However, complete fuel injection pumps or systems may have their own specific classification depending on how they are presented and their degree of assembly. Importers handling high-value injection system components should consider requesting a CBP binding ruling to confirm the correct heading.
Useful documentation includes the manufacturer's technical data sheet specifying the compatible engine type, the OEM application guide or fitment list, purchase orders referencing diesel engine models, and any emissions certification paperwork associated with the parent engine. When a part is marketed exclusively for diesel applications, that commercial context is strong evidence for classification under SITC 71392 rather than the spark-ignition parts heading.
Basic heading 57 of 642 in section 7
Basic heading 71392 · $376.0M of $172.0B
Trade Directory
List your company and tag the 6-digit products you trade, so the companies trading them can find you. Be the first supplier listed.
Imports · August 2026
origin
Mexico and Germany together supply 46% of it. China pays 36.5% duty; Mexico 2.1%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$376.0MYoY · free account
Exports
$221.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.8B of Parts for Compression-Ignition Internal Combustion Piston Engines, N.E.S..
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.