Description
Overview:
This Filter Base is a genuine Stihl component for professional petrol chainsaws, designed to mount and seal the air filter assembly on the intake side of the engine. Built from durable moulded polymer to withstand vibration, fuel mist and heat, it supports effective air filtration and stable airflow. By keeping dust and debris out of the carburettor and cylinder, it helps protect engine internals and sustain performance. Engineered for a precise fit on Stihl MS640 and MS660 models, it integrates cleanly with the original air filter and fasteners for reliable alignment. A suitable replacement when the existing base is cracked, warped or worn, this OEM part restores correct seating of the filter and contributes to consistent starting, idling and cutting efficiency.
Key Features:
- Genuine Stihl OEM part for assured compatibility and fit
- Robust moulded polymer construction for long service life in harsh conditions
- Maintains a proper air seal to support effective filtration and engine protection
- Direct-fit design for quick, straightforward installation with standard fixings
- Helps preserve throttle response, power output and fuel efficiency
- Stable mounting platform reduces vibration-related wear on the air filter
- Resistant to oil, fuel vapour and temperature changes common in chainsaw use
- Ideal as a preventative replacement when the old base shows cracks or deformation
- Supports reliable operation in forestry, arborist and site work environments
- Matches Stihl specification for alignment with carburettor and intake components
Typical Applications:
Used during routine servicing or repairs to replace damaged or distorted air filter bases on Stihl professional chainsaws. Suitable for forestry, arboriculture, landscaping, and construction site tasks where clean intake air and dependable engine performance are essential.
Also known as:
Air filter housing, air filter support, filter mount, airbox base, air cleaner base, intake base plate, carburettor intake housing for chainsaw.
Fits Models:
066, MS 640, MS 650, MS 660, MS640, MS650, MS660
Alternate Part Numbers:
1122-120-3402, 11221203402
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