×
Description
4180 129 0906 STIHL Gasket – Genuine OEM Part
The STIHL Gasket (4180 129 0906) is a genuine OEM replacement gasket designed for use on select STIHL professional trimmers, brushcutters, KombiMotor units, augers, and hedge trimmers.
This gasket is used in the muffler and air filter area depending on model configuration. On certain models, it is also used at the engine interface based on engine diameter. Proper sealing is essential for preventing air or exhaust leaks and maintaining stable engine performance.
Manufactured to STIHL factory specifications, this gasket ensures correct fitment, durability, and long service life.
Replacing a worn or damaged gasket helps restore proper sealing and prevents performance loss or running issues.
Product Details
-
OEM Part Number: 4180 129 0906
-
Brand: STIHL (Genuine OEM)
-
Part Type: Gasket
-
Application: Muffler / Air filter / Engine gasket (model-specific)
-
Condition: New Genuine OEM Part
Function
This OEM gasket is designed to:
-
Provide a proper seal between engine components
-
Prevent air or exhaust leaks
-
Maintain correct airflow and exhaust efficiency
-
Support consistent engine performance
-
Replace damaged or leaking gaskets
⚠️ A leaking gasket may cause power loss, overheating, or poor running conditions.
Verify Fitment (Recommended)
Before ordering, confirm:
-
OEM part number 4180 129 0906
-
Application location (muffler, air filter, or engine interface)
-
Engine size (Ø 43 mm where specified)
-
Fitment matches your STIHL illustrated parts diagram
⚠️ Always verify fitment by OEM part number, as gasket applications vary by model and configuration.
Compatibility
Fits select STIHL models and configurations, including:
Trimmers / Brushcutters
-
FS 131 / FS 131 R / FS 131.0 / FS 131.0 R – Muffler, Air filter
-
FS 310 / FS 311 – Muffler, Air filter
KombiMotors
-
KM 130 R – Muffler, Air filter
-
KM 131 R – Muffler, Air filter
Hedge Trimmers / Pole Pruners
-
HT 131 – Engine Ø 43 mm
-
HT 132 – Muffler, Air filter
-
HT 133 / HT 134 / HT 135 – Engine Ø 43 mm
Augers / Blowers
-
BT 130 – Muffler, Air filter, Air guide shroud
-
BT 131 – Muffler, Air filter
-
FB 131 – Muffler, Air filter
(Exact application depends on configuration and engine size — verify using OEM parts diagram.)
Installation Notes
-
Remove muffler, air filter, or related components as required
-
Clean all sealing surfaces thoroughly
-
Install gasket 4180 129 0906 in the correct position
-
Reassemble components securely to factory specifications
-
Inspect for leaks after installation
⚠️ Always replace gaskets when components are removed.
Maintenance Tips
-
Inspect gaskets during routine service
-
Replace gaskets showing compression or damage
-
Use only genuine STIHL OEM gaskets for correct fit and sealing performance
