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- 4147 350 5802 STIHL Tank Vent – Genuine OEM Part
Description
4147 350 5802 STIHL Tank Vent – Genuine OEM Part
The STIHL Tank Vent (4147 350 5802) is a genuine OEM fuel tank vent designed for use on select STIHL trimmers, Kombi tools, and hedge trimmers (specific serial number ranges apply).
This tank vent allows air to enter the fuel tank as fuel is used, preventing vacuum buildup that can restrict fuel flow. Replacing a clogged, leaking, or faulty tank vent can restore proper fuel delivery and correct issues such as stalling, surging, loss of power, or the engine dying after running for a short time.
Manufactured to STIHL factory specifications, this OEM tank vent provides correct fitment, proper pressure regulation, and long-lasting reliability.
Product Details
OEM Part Number: 4147 350 5802
Brand: STIHL (Genuine OEM)
Part Type: Tank Vent / Fuel Tank Vent
Application: Fuel Tank Venting System (engine-specific)
Condition: New Genuine OEM Part
Function
This OEM tank vent is designed to:
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Allow air into the fuel tank to prevent vacuum buildup
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Maintain steady fuel flow to the carburetor
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Prevent fuel starvation under load
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Replace clogged, leaking, or defective tank vents
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Help correct stalling and power loss issues
⚠️ A faulty tank vent can cause the engine to run briefly, then stall due to fuel starvation.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4147 350 5802
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Your STIHL model is listed below
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Your machine serial number matches the range shown
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Part location matches your fuel tank / engine 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 K (Engine from serial number 516140932)
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HL 94 (Engine from serial number 516140932)
Trimmers / Brushcutters
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FS 94 R (Engine from serial number 516962085)
Kombi Tools
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KM 94 R (Engine from serial number 516674202)
Installation Notes
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Work in a clean area away from sparks or open flame
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Drain fuel tank or work with a nearly empty tank
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Remove old tank vent from the fuel tank vent port
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Install STIHL OEM tank vent 4147 350 5802
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Confirm vent is seated securely and fuel lines are routed correctly
⚠️ Do not pinch or kink vent lines. Ensure the vent is installed in the correct direction (if applicable).
Maintenance Tips
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Replace tank vent if engine stalls after a few minutes of operation
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Inspect vent for fuel leaks or blockage
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Keep fuel system clean and use fresh fuel mix
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Use genuine STIHL OEM vents for correct pressure regulation and fitment
