U.S. imports of Spark-Ignition Reciprocating or Rotary Internal Combustion Piston Engines, N.E.S. (SITC 71381) totaled $48.8M in August 2026, imported from 29 countries.
Importers of Spark-Ignition Reciprocating or Rotary Internal Combustion Piston Engines, N.E.S. paid $11.1M in duties in August 2026, an average duty rate of 24.44% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Spark-Ignition Reciprocating or Rotary Internal Combustion Piston Engines, N.E.S. imports of $48.8M in August 2026 ran 10% below the year-to-date monthly average of $54.6M.
Last updated: August 2026 dataSpark-ignition reciprocating and rotary internal combustion engines not elsewhere specified encompass a wide range of applications — from small engines for lawn and garden equipment and generators to industrial power units — that do not fit the road-vehicle, marine, or displacement-specific categories defined elsewhere in SITC Division 713. The 'N.E.S.' designation makes residual classification the operative principle: importers must confirm that the engine does not belong to a more specific heading before using this code. EPA non-road spark-ignition engine standards (40 CFR Parts 1054 and 1060) frequently apply to engines in this category.
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673 import shipments a month
In practice, this heading captures spark-ignition engines used in outdoor power equipment (lawn mowers, chainsaws, generators, compressors), small industrial machinery, and specialty vehicles not covered by road-vehicle or marine headings. Wankel rotary engines for non-marine, non-road applications also fall here. The key is that the engine must not fit a more specific SITC 713 category.
The classification process is hierarchical: first check whether the engine meets the displacement threshold for 71321 or 71322 (road-vehicle use), then whether it qualifies as an outboard motor (71331) or other marine propulsion engine (71332). Only after ruling out all more-specific headings should 71381 be used. Manufacturer application documentation and EPA certification category (on-road, marine, or non-road) are the most reliable guides.
Basic heading 228 of 642 in section 7
Basic heading 71381 · $48.8M of $172.0B
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Imports · August 2026
origin
Japan and China together supply 50% of it. China pays 45.6% duty; Japan 19.0%.
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
$48.8MYoY · free account
Exports
$29.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $659.9M of Spark-Ignition Reciprocating or Rotary Internal Combustion Piston Engines, N.E.S..
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.