Description
Overview:
This is a genuine Stihl inlet valve for selected petrol brushcutters and trimmers, engineered to control the intake of air-fuel mixture into the cylinder for efficient combustion. Made from durable, heat-resistant steel with a precision-ground face, it provides a reliable seal for stable compression and smooth running. Designed for direct fitment in compatible Stihl engines, it helps restore performance where the original valve has worn or become damaged. Suitable for use in demanding landscaping and grounds maintenance environments, it supports consistent starting, steady idle and good throttle response. Ideal for keeping Stihl FS25-4 and FS65-4 machines working reliably, it offers OEM build quality and compatibility for straightforward maintenance and long service life.
Key Features:
- Genuine Stihl OEM component for assured compatibility and fit
- Durable steel construction for heat and wear resistance
- Precision sealing to maintain compression and engine efficiency
- Helps improve starting, idle stability and overall performance
- Designed to regulate air intake accurately for correct mixture control
- Consistent quality for professional and DIY maintenance schedules
- Straightforward to fit with standard workshop practices
- Suitable for regular use in tough jobsite or agricultural conditions
- Supports longevity of the valve train and cylinder head components
Typical Applications:
Replacement inlet valve during engine service or overhaul on compatible Stihl brushcutters and trimmers. Used when diagnosing loss of power, poor starting, misfires, or compression issues caused by a worn, pitted, bent or leaking valve. Suitable for routine preventative maintenance in landscaping, grounds care, hire fleets and estate work.
Also known as:
Inlet poppet valve, intake poppet, inlet valve stem, cylinder head inlet valve, air induction valve, engine intake component, valve head (inlet), poppet-type inlet valve for small engines.
Fits Models:
FS25-4, FS254, FS65-4, FS654
Alternate Part Numbers:
4170-025-1800, 41700251800
Product Specifications
| L&S Part No. | 4170 025 1800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41700251800 |
| Unit of Sale | 1 |
| Machine Type | Brushcutters |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM component ensures compatibility and fit - Durable steel construction resists heat and wear - Precision sealing maintains compression and engine efficiency - Designed for FS25-4 and FS65-4 models - Regulates air intake for correct mixture control |
| Fits Models | FS25-4, FS65-4 |
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