On this parts fiche the Coil Comp, Plug Hole is the most specified component.
A sample from the products for the Ignition Coil include: Plug Hole Seal, Spark Plug(pzfr6f-11, Coil Comp, Plug Hole, Nut,hex Cap 6mm.
The sub assemblies and components that make up this Ignition Coil include this Coil Comp, Plug Hole, the most expensive part.