HS heading 8407 (Spark-ignition reciprocating or rotary internal combustion piston engines) spans 8 products in U.S. import records, with 26,173 bill-of-lading shipments. The most imported are Reciprocating piston engines of a cylinder capacity exceeding 1,000 cc, Marine propulsion engines, outboard motors, and Spark-ignition reciprocating or rotary internal combustion piston engines, other engines.