Description
Overview:
This is a genuine Stihl gasket for professional petrol chainsaws, designed to seal critical mating surfaces and prevent air, fuel, and oil leaks. Made from durable fibre-composite gasket material with good resistance to heat and hydrocarbons, it helps maintain correct compression and crankcase pressure for reliable running. The profile is cut precisely to match Stihl housings for a dependable fit. Identified by Manufacturer Part Number (MPN) 1122 029 0507, it is a direct replacement suitable for routine servicing or rebuilds on models such as the MS 660 and 066. Using the correct OEM gasket helps stabilise idle, throttle response, and overall performance while reducing the risk of premature wear caused by unwanted air ingress or loss of sealing integrity.
Key Features:
- Genuine Stihl OEM part (MPN 1122 029 0507) for assured compatibility and fit
- Fibre-composite material resists fuel, oil, and operating temperatures for dependable sealing
- Helps maintain compression and crankcase pressure to support engine performance
- Reduces the risk of air leaks that can cause poor running or accelerated wear
- Precise profile for Stihl housings, aiding straightforward alignment and assembly
- Suitable for scheduled maintenance, top-end refreshes, and leak rectification
- Supports consistent tuning and smooth throttle response under load
- Designed for minimal downtime when fitted with standard workshop tools
- Ideal for professional users and DIY maintenance on compatible Stihl chainsaws
Typical Applications:
Used during engine servicing, rebuilds, and repairs where mating surfaces are disturbed, such as top-end work, crankcase resealing, or when diagnosing air leaks. Suitable for forestry, arborist, and grounds maintenance saws that require dependable sealing to keep performance stable across demanding cutting tasks.
Also known as:
Crankcase sealing gasket, cylinder base gasket, housing gasket, paper gasket, mating-surface gasket, chainsaw sealing gasket.
Fits Models:
066, MS 650, MS 660, MS650, MS660
Alternate Part Numbers:
1122-029-0507, 11220290507
