The lowest price component in this Muffler (model X) parts-list fiche is the Lock Washer.
A sample from the products for the Muffler (model X) include: Spacer(6.5x10.5x6.5), Clamp,muffler Connector,l, Lock Washer, Clamp,exhaust Pipe.
On this parts fiche the Bolt is the most specified component.