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- 1140 140 0657 – STIHL Muffler (Genuine OEM Part)
Description
1140 140 0657 – STIHL Muffler (Genuine OEM Part)
The STIHL 1140 140 0657 Muffler is a genuine OEM exhaust component engineered to meet STIHL factory specifications for proper exhaust flow, noise reduction, and engine performance. This muffler helps maintain correct back pressure, supports efficient combustion, and protects engine components from excessive heat and exhaust exposure.
Designed as a direct-fit replacement, it installs easily on compatible models without modification.
Product Details
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Manufacturer Part Number: 1140 140 0657
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Brand: STIHL
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Part Name: Muffler
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OEM Status: Genuine STIHL OEM
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Condition: New
Key Benefits
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Maintains proper exhaust flow and engine back pressure
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Reduces exhaust noise while preserving power output
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Built to STIHL OEM durability and fit standards
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Helps protect the cylinder and surrounding components
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Direct replacement for original equipment muffler
Applications & Compatibility
Used on the following STIHL chainsaw models:
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MS 391 – Cylinder / Muffler assembly
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MS 311 – Cylinder / Muffler assembly
(Always confirm fitment with your STIHL model and serial number before ordering.)
The STIHL 1140 140 0657 Muffler is the correct OEM solution for restoring quiet, efficient exhaust operation and maintaining reliable performance on MS 311 and MS 391 chainsaws.
