Description
Overview:
This Exhaust Valve is a Genuine Stihl OEM part (part no. 4282 025 1903) for BR‐series backpack blowers. It is engineered to control and seal exhaust gas flow at the cylinder head, protecting compression and valve timing so the engine runs smoothly under load. The valve is manufactured from heat‐resistant, hardened steel with a precision‐ground face and stem for reliable seating and consistent operation. It is designed for Stihl 4‐MIX backpack blowers such as the BR 600 and BR 800, and is a direct replacement for a worn, burnt, or bent original valve. Using the correct OEM valve helps restore performance, starting, and idle quality while maintaining compatibility with the original spring, retainers, and guide.
Key Features:
- Genuine Stihl OEM component for assured compatibility and build quality
- Heat‐resistant hardened steel for durability in high‐temperature exhaust conditions
- Precision‐ground sealing face and stem for proper seating and smooth movement
- Direct replacement to factory specification; no modification required
- Helps restore power, throttle response, and reliable starting after valve wear
- Designed to work with the original valve spring, keepers, and guide
- Suitable for routine top‐end service and rebuilds using standard workshop tools
- Stable performance when installed and maintained to manufacturer specifications
Typical Applications:
Used during engine repairs and maintenance on Stihl backpack blowers to replace a worn, pitted, bent, or burnt exhaust valve. Common in rebuilds following low compression, hard starting, misfiring, or loss of power. Suitable for landscaping, grounds maintenance, construction site clean‐ups, and seasonal leaf and debris clearing where dependable blower performance is required.
Also known as:
Poppet valve (exhaust side), outlet valve, engine discharge valve, cylinder head valve (exhaust), BR‐series engine valve, exhaust-side head valve, valve head and stem assembly.
Fits Models:
BR 500, BR 500-Z, BR 550, BR 550-Z, BR 600, BR 600-Z, BR 700, BR 700-Z, BR 800, BR 800 C-E, BR 800 C-E Z, BR 800 C-E Z Magnum, BR 800 X-Z Magnum
Alternate Part Numbers:
4282-025-1903, 42820251903
Product Specifications
| L&S Part No. | 4282 025 1903 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42820251903 |
| Unit of Sale | 1 |
| Machine Type | Backpack Blowers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part for BR-series backpack blowers - Heat-resistant hardened steel for high-temperature durability - Precision-ground face and stem ensure reliable seating - Direct replacement; no modification needed - Compatible with original spring, retainers, and guide |
| Fits Models | BR500 | BR550 | BR600 | BR700 | BR800 |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Pushrod for Stihl BR500, BR550 - 4282 038 2600£1.81 £1.51
