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- 4140 149 0602 STIHL Muffler Gasket – Genuine OEM Part
Description
4140 149 0602 STIHL Muffler Gasket – Genuine OEM Part
The STIHL Muffler Gasket (4140 149 0602) is a genuine OEM exhaust gasket designed to seal the connection between the muffler and engine on a wide range of STIHL handheld equipment. This gasket helps prevent exhaust leaks, maintains proper backpressure, and supports safe, efficient engine performance.
Manufactured to STIHL’s exact factory specifications, this OEM muffler gasket provides correct fitment and dependable sealing when replacing worn, crushed, or leaking exhaust gaskets during muffler service.
Product Details
OEM Part Number: 4140 149 0602
Brand: STIHL (Genuine OEM)
Part Type: Muffler Gasket
Application: Muffler / Exhaust Connection
Condition: New Genuine OEM Part
Function
This muffler gasket is designed to:
Seal the muffler-to-engine exhaust connection
Help prevent exhaust leaks and excessive noise
Maintain proper exhaust flow and performance
Replace worn, crushed, or leaking OEM gaskets
Restore safe and reliable equipment operation
⚠️ An exhaust leak may cause loss of power, overheating, loud operation, or exhaust fumes near the operator.
Verify Fitment in 30 Seconds
Before ordering, confirm the following:
OEM part number 4140 149 0602
Your STIHL model is listed below
Part location matches your muffler / exhaust diagram
⚠️ Always verify fitment by OEM part number for best accuracy.
Compatibility
Fits a wide range of STIHL equipment, including:
Trimmers / Brushcutters
FS 38
FS 38 2-MIX
FS 45
FS 45 D
FS 45 C-E
FS 46
FS 46-D
FS 46 C-E
FS 46 C-E D
FS 55
FS 55 R
FS 55 R-D
FS 55-D
FS 55 C-E D
FS 55 RC-E
FS 55 RC-E D
Kombi Tools
KM 55 R
KM 55 R-D
KM 55 RC-E
KM 55 RC-E D
Edgers
FC 55
FC 55-D
Hedge Trimmers / Long-Reach Units
HL 45
HL 45-D
HS 45
HS 81 R
HS 81 T
HS 81 TC-E
HS 82 R
HS 82 T
HS 86 R
HS 86 T
HS 87 R
HS 87 T
Blowers / Backpack Units
BG 45
BG 45 C KAT
BG 46
BG 46-D
BG 50
BG 55
BG 65
BG 65-D
BG 85
BG 85-D
BR 45 C
Shredders / Vacuum Units
SH 55
SH 85
SH 85-D
Multi-Tools
MM 55
MM 55 C-E
⚠️ This list includes common applications — always confirm using your parts diagram or owner’s manual.
Installation / Usage
Turn off engine and allow it to cool completely
Remove muffler mounting screws and old gasket
Clean exhaust mating surfaces carefully
Install STIHL OEM muffler gasket 4140 149 0602
Reinstall muffler and tighten evenly
Test for leaks and proper operation
⚠️ Professional installation is recommended if unsure.
Maintenance Tips
Replace muffler gaskets anytime the muffler is removed
Inspect for exhaust leaks if unit becomes louder or smells of fumes
Keep muffler bolts tight to factory spec
Use only genuine STIHL OEM exhaust sealing parts for best reliability
Additional Information
Shipping & Return
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