The Washer,plain 6mm is the lowest priced item on this Muffler schematic.
This schematic depicts all components used in the Cn250 2001 (1) Usa Muffler partslist.
A sample from the products for the Muffler include: Muffler Comp,exh., Gasket,ex.pipe (nas), Pipe Comp,exh, Bolt,flange,8x40.
