With a quantity of six pieces, the Packing,protector (nas) is the most used part in the EXHAUST MUFFLER diagram.
Some items from this specific schematic: Screw Cross 6x14, Cover,exh*nh-106*, Packing,protector (nas), Collar, Ex. Joint.
The Screw,cross 5x6 is the lowest priced item on this Exhaust Muffler schematic.