With four applications this Coil Comp, Plug Hole is the most specified part.
Some items from this specific schematic: Spark Plug(pzfr6f-11, Nut,hex Cap 6mm, Plug Hole Seal, Coil Comp, Plug Hole.
The Ignition Coil is made up of components including this Coil Comp, Plug Hole which is the most expensive.