Description
4144 129 0900 STIHL Gasket Genuine OEM Part
The STIHL Gasket (4144 129 0900) is a genuine OEM sealing gasket designed for use in the air filter / spacer flange assembly on select STIHL trimmers, brushcutters, Kombi tools, edgers, blowers, sprayers, pole pruners, hedge trimmers, and Yard Boss units.
This gasket helps create a proper seal between the air filter/spacer flange components to prevent air leaks and keep dust and debris from bypassing the filtration system. Replacing a worn, torn, or flattened gasket helps maintain correct airflow, engine performance, and long-term reliability.
Manufactured to STIHL factory specifications, this OEM gasket provides correct fitment, proper sealing, and long-lasting durability.
Product Details
OEM Part Number: 4144 129 0900
Brand: STIHL (Genuine OEM)
Part Type: Gasket
Application: Air Filter / Spacer Flange (varies by model)
Condition: New Genuine OEM Part
Function
This OEM gasket is designed to:
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Seal the air filter / spacer flange assembly
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Prevent unfiltered air from entering the engine
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Reduce air leaks that can cause performance issues
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Maintain proper airflow and filtration performance
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Replace worn, torn, hardened, or flattened gaskets
A damaged gasket can allow dirt into the engine and may cause poor performance, lean running, or premature engine wear.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4144 129 0900
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Your STIHL model is listed below
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Part location matches your air filter / spacer flange diagram
Always verify fitment by OEM part number for best accuracy.
Compatibility (Fits STIHL Models)
Blowers / Sprayers
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BG 56 C-E
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BG 66
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BG 86
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BG 86 C-E
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BR 200
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SR 200
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SH 56 C-E
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SH 86 C-E
Trimmers / Brushcutters
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FS 40 C-E (4144)
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FS 50 C-E L
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FS 56 C-E
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FS 56 RC-E
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FS 70 R
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FS 70 RC-E
Kombi Tools
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KM 56 RC-E
Edgers
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FC 56 C-E
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FC 70
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FC 70 C-E
Pole Pruners
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HT 56 C-E
Hedge Trimmers / Long-Reach Units
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HL 56 K
Yard Boss
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MM 56 C-E Yard Boss
Installation Notes
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Turn off engine and allow it to cool
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Remove air filter cover
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Remove air filter / spacer flange as needed
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Replace the old gasket with STIHL OEM gasket 4144 129 0900
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Reinstall components and ensure proper sealing
Make sure the gasket sits flat and seals fully to prevent unfiltered air from entering the engine.
Maintenance Tips
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Inspect the gasket when servicing the air filter
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Replace if torn, brittle, flattened, or leaking
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Keep the air filter housing clean
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Use genuine STIHL OEM parts for correct fit and sealing
