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Genuine STIHL 4238 149 0600 Muffler Gasket (also referenced as 42381490600) is an OEM exhaust seal designed to create a secure, gas-tight joint between the engine exhaust port and the muffler on select STIHL cut-off saws. This heat-resistant gasket prevents exhaust leaks, maintains correct back pressure and supports reliable starting and smooth running after routine servicing or muffler removal.
