Parts such as the E-4: Roller Comp,cam C, Washer,8mm, Spring,cam Chain, Rod Comp.,cam Cha are included in the C90cm 2007 (7) Japan Ha02-280 E-4 parts fiche.
This schematic depicts all components used in the C90cm 2007 (7) Japan Ha02-280 E-4 partslist.
The sub assemblies and components that make up this E-4 include this Chain,cam (84le), the most expensive part.