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Description
4244 129 0900 STIHL Gasket – Genuine OEM Engine / Spacer Flange Seal
The STIHL Gasket (4244 129 0900) is a genuine OEM sealing component designed for select STIHL backpack blowers and mistblowers. This gasket is used within the engine and spacer flange assembly to create a proper seal between mating components, preventing air leaks and ensuring correct engine performance.
Gaskets play a critical role in maintaining proper compression and controlled airflow within the fuel and intake system. Over time, gaskets can become brittle, compressed, torn, or damaged due to heat cycles, vibration, fuel exposure, or improper installation. A failing gasket may cause air leaks, erratic engine performance, lean running conditions, hard starting, or reduced power output.
Replacing worn or damaged gaskets with genuine STIHL OEM parts restores proper sealing integrity and maintains factory engine performance specifications.
Manufactured to STIHL factory standards, this gasket ensures precise fitment, correct material composition, and long-term durability in demanding commercial applications.
Product Details
OEM Part Number: 4244 129 0900
Brand: STIHL (Genuine OEM)
Part Type: Gasket
Application: Engine / Spacer Flange / Air Filter Assembly
Condition: New Genuine OEM Part
Function
This STIHL gasket is designed to:
Create a secure seal between engine or spacer flange components
Prevent air leaks in the intake system
Maintain proper fuel and air mixture regulation
Support consistent engine compression and performance
Replace worn, torn, or heat-damaged gaskets
⚠️ An air leak caused by a damaged gasket can result in poor performance or engine damage.
Verify Fitment (Recommended)
Before ordering, confirm:
OEM part number 4244 129 0900
Your unit model matches those listed below
Application matches your STIHL illustrated parts diagram
Correct engine or spacer flange configuration
⚠️ Gaskets are application-specific — always verify by OEM part number.
Compatibility
This genuine OEM gasket fits select STIHL backpack blowers and mistblowers, including:
Backpack Blowers
BR 350 (Engine)
BR 430 (Spacer flange / Air filter)
BR 450 (Engine)
BR 450 C-EF (Engine)
Mistblowers
SR 430 (Spacer flange / Air filter)
SR 450 (Spacer flange / Air filter)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
Disconnect spark plug before servicing
Remove surrounding engine or intake components
Carefully clean mating surfaces
Install new gasket without sealant unless specified
Reassemble components and torque to specification
Check for proper sealing and engine performance
⚠️ Improper installation may cause air leaks or engine damage.
Maintenance Tips
Inspect gaskets during carburetor or intake service
Replace gaskets whenever components are removed
Avoid reusing compressed or heat-damaged gaskets
Maintain clean sealing surfaces during service
Always use genuine STIHL OEM sealing components
