Parts suitable for use solely or principally with the engines of heading no. 8407 or 8408

840910 Engines; parts of aircraft engines (spark-ignition reciprocating or rotary internal combustion piston engines) 840991 Engines; parts, suitable for use solely or principally with spark-ignition internal combustion piston engines (for other than aircraft) 840999 Engines; parts for internal combustion piston engines (excluding spark-ignition)