This is a muffler mod in a box complete with muffler body, cover, spark screen, screws and gasket.
Fits Stihl 066 and MS660 Chainsaws
You may need to re-adjust your carburetor after installation of cover.
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Buying in bulk? We'll gladly put together a special order and discounted pricing just for you.
We are here for you and are available for fitment questions, quality questions and suggestions of parts for given situations.