Description
Overview:
This Tank Vent is a genuine Stihl spare part designed for the Stihl 044 and MS 440 chainsaws. Made from fuel‐resistant polymer components, it allows controlled airflow into the fuel tank while resisting fuel splash, helping to prevent a vacuum from forming. A healthy vent keeps fuel delivery stable, so the engine runs reliably under load and at idle. If a tank cannot breathe, the saw may lose power, hesitate, or stall as the tank empties. With OEM Part No. 1128 350 5805, this vent provides the correct fit and function for the specified models, supporting dependable performance in forestry, arborist, and general cutting work. This is a Genuine Stihl part engineered for compatibility, durability, and consistent sealing.
Key Features:
- Genuine Stihl part for assured compatibility and reliability (OEM 1128 350 5805)
- Precise fit for Stihl 044 and MS 440 to restore correct tank ventilation
- Fuel‐resistant materials for durability with modern petrol blends
- One‐way design admits air while helping to minimise fuel leakage and fumes
- Helps prevent tank vacuum that can cause lean running, power loss, or stalling
- Quick, straightforward replacement to reduce downtime
- Robust construction suited to vibration, heat, and outdoor conditions
- Supports smooth idling, consistent acceleration, and stable cutting performance
Typical Applications:
Used on professional and domestic chainsaws to maintain proper fuel tank breathing during felling, logging, cross‐cutting, and firewood processing. Ideal when a saw shows symptoms of restricted venting, such as loss of power after a short run, stalling when hot, or a pronounced hiss when opening the fuel cap. Suitable for routine maintenance or like‐for‐like replacement during a fuel system refresh.
Also known as:
Breather valve, one‐way tank breather, duckbill breather, fuel breather valve, check‐valve vent, fuel vapour vent, tank air vent.
Fits Models:
044, MS 440, MS440
Alternate Part Numbers:
1128-350-5805, 11283505805
Product Specifications
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Tank Vent for Stihl 020T, 020 - 1129 350 5850£7.48 £6.23
Related Products
-
![]()
Flange for Stihl MS440, 044 - 1128 120 2201£36.86 £30.72
