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Description
4149 080 1801 STIHL Fan Housing – Genuine OEM Part
The STIHL Fan Housing (4149 080 1801) is a genuine OEM engine fan housing designed for use on select STIHL trimmers, Kombi tools, and hedge trimmers (serial number ranges apply).
This fan housing supports the engine cooling system by enclosing the flywheel fan and directing cooling airflow through the engine shroud system. Replacing a cracked, broken, warped, or damaged fan housing helps maintain proper airflow, protects internal components, and reduces the risk of overheating.
Manufactured to STIHL factory specifications, this OEM fan housing provides correct fitment, secure mounting, and long-lasting durability.
Product Details
OEM Part Number: 4149 080 1801
Brand: STIHL (Genuine OEM)
Part Type: Fan Housing / Engine Housing
Application: Engine Cooling / Flywheel Area (varies by model)
Condition: New Genuine OEM Part
Function
This OEM fan housing is designed to:
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Enclose and protect the flywheel fan area
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Direct cooling air properly through the engine
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Support correct airflow and temperature control
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Replace cracked, broken, or damaged fan housings
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Help prevent overheating and debris intrusion
⚠️ A damaged fan housing can reduce cooling airflow and may lead to overheating and engine damage.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4149 080 1801
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Your STIHL model is listed below
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Your machine serial number matches the range shown (if applicable)
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Part location matches your engine / fan housing diagram
⚠️ Always verify fitment by OEM part number and serial number for best accuracy.
Compatibility (Fits STIHL Models)
(Engine serial number ranges apply)
Hedge Trimmers / Long-Reach Units
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HL 91 K (Engine from serial number 516095589)
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HL 94 (Engine up to serial number 514368761)
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HL 94 K (Engine up to serial number 514368761)
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HL 94 KC-E (model listing provided — verify by serial number and parts diagram)
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
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Remove engine shrouds and starter assembly as needed
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Remove the old fan housing
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Install STIHL OEM fan housing 4149 080 1801
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Ensure housing aligns correctly and all fasteners are tightened evenly
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Reassemble and confirm nothing rubs against the flywheel
⚠️ Always confirm proper shroud installation to maintain correct cooling airflow.
Maintenance Tips
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Keep fan housing vents clear of grass and debris
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Inspect housing for cracks or broken mounting points
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Replace damaged fan housings to prevent overheating
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Use genuine STIHL OEM housings for correct fit and durability




