This EXHAUST assembly utilises three Screw, Tapping(42x)(s) - the highest specified component.
The lowest price component in this Exhaust parts-list fiche is the Bolt (682).
Parts such as the Exhaust: Gasket, Exhaust Pipe (nas), Bolt (682), Protector, Muffler 1, Pipe, Exhaust 1 are included in the Ys240tb Snow Blower 1990 Exhaust parts fiche.