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- 4149 140 0601 STIHL Muffler – Genuine OEM Part
Description
4149 140 0601 STIHL Muffler – Genuine OEM Part
The STIHL Muffler (4149 140 0601) is a genuine OEM exhaust muffler designed for use on select STIHL trimmers, Kombi tools, and long-reach hedge trimmers (serial number ranges apply).
This muffler is used in the engine exhaust system to reduce noise, direct exhaust flow, and support proper engine performance. Replacing a cracked, damaged, leaking, or clogged muffler helps maintain correct exhaust backpressure, improves reliability, and supports stable running.
Manufactured to STIHL factory specifications, this OEM muffler provides correct fitment, secure mounting, and long-lasting durability.
Product Details
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OEM Part Number: 4149 140 0601
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Brand: STIHL (Genuine OEM)
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Part Type: Muffler / Exhaust
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Application: Engine exhaust system (varies by model)
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Condition: New Genuine OEM Part
Function
This OEM muffler is designed to:
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Reduce engine exhaust noise
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Direct exhaust gases safely away from the engine
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Support correct exhaust flow and proper backpressure
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Replace cracked, damaged, leaking, or clogged mufflers
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Maintain reliable engine performance and long service life
⚠️ A damaged or leaking muffler may cause excessive noise, loss of power, overheating, or unsafe exhaust exposure.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4149 140 0601
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Your STIHL model is listed below
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Your engine serial number matches the range shown
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Part location matches your parts diagram
⚠️ Always verify fitment by OEM part number and serial number for best accuracy.
Compatibility (Fits STIHL Models)
(Serial number range applies)
Hedge Trimmers / Long-Reach Units
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HL 91 K (Engine up to serial number 514399784)
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HL 94 K (Engine up to serial number 514368761)
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HL 94 (Engine up to serial number 514368761)
Trimmers / Brushcutters
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FS 94 R (Engine up to serial number 514309587)
Kombi Tools
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KM 94 R (Engine up to serial number 514291126)
Installation Notes
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Turn off engine and allow it to cool completely
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Remove the muffler cover or shroud if required
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Remove the old muffler and inspect mounting bolts
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Install STIHL OEM muffler 4149 140 0601
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Tighten fasteners evenly and reinstall any covers
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Start engine and check for exhaust leaks
⚠️ Exhaust parts get extremely hot. Always allow full cooling before service.
Maintenance Tips
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Inspect the muffler for cracks, leaks, and carbon buildup
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Replace damaged mufflers to prevent overheating and power loss
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Use genuine STIHL OEM exhaust parts for correct fit and safe operation

