Stihl Muffler Cover (Dual Port) for 066, MS650, MS660 Chainsaws 1122 140 0800

OEM muffler cover from Stihl. Replace your standard muffler cover with a dual port cover. This will allow your saw to breath easier and should give your saw increased performance over a standard muffler. Cover is installed by simply removing 4 muffler screws.