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Description
4244 405 1000 STIHL Spark Plug Boot – Genuine OEM Ignition Lead Connector
The STIHL Spark Plug Boot (4244 405 1000) is a genuine OEM ignition system component designed for select STIHL backpack blowers and mistblowers. This spark plug boot connects the ignition lead to the spark plug, ensuring secure electrical contact and reliable spark delivery for proper engine combustion.
Spark plug boots are exposed to continuous heat, vibration, moisture, and repeated service removal. Over time, the boot can crack, loosen, or degrade internally, leading to weak spark, misfiring, hard starting, intermittent ignition, or complete loss of ignition connection.
Replacing a worn or damaged spark plug boot with the correct genuine STIHL OEM part restores proper ignition transfer, reliable starting, and consistent engine performance without replacing the entire ignition coil or wiring harness.
Manufactured to STIHL factory specifications, this OEM spark plug boot ensures precise fitment, secure plug connection, and long-term durability under demanding commercial conditions.
Product Details
OEM Part Number: 4244 405 1000
Brand: STIHL (Genuine OEM)
Part Type: Spark Plug Boot / Ignition Connector
Application: Ignition lead to spark plug connection
Condition: New Genuine OEM Part
Function
This STIHL spark plug boot is designed to:
Provide secure electrical connection to the spark plug
Transfer ignition spark energy reliably
Protect ignition lead connection from moisture and debris
Replace cracked, loose, or worn plug boots
Restore consistent engine starting and performance
⚠️ A damaged plug boot may cause misfiring, weak spark, or no-start conditions.
Verify Fitment (Recommended)
Before ordering, confirm:
OEM part number 4244 405 1000
Your unit model matches those listed below
Ignition system configuration matches your engine version
Fitment is verified using your STIHL illustrated parts diagram
⚠️ Ignition connectors are model-specific — always verify by OEM part number.
Compatibility
This genuine OEM spark plug boot fits select STIHL backpack blowers and mistblowers, including:
Backpack Blowers
BR 350 (Ignition system)
BR 430 (Ignition system)
BR 450 (Ignition system BR 450-Z)
BR 450 C-EF (Ignition system BR 450 C-EF Z)
Mistblowers
SR 430 (Ignition system)
SR 450 (Ignition system)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
Disconnect spark plug before servicing
Remove old spark plug boot from ignition lead carefully
Inspect ignition wire for damage
Install new boot ensuring secure engagement with spark plug terminal
Reassemble engine cover components as required
Test ignition performance and starting operation
⚠️ Ignition system service should be performed by a qualified technician.
Maintenance Tips
Inspect plug boot regularly for cracking or looseness
Keep ignition components clean and dry
Replace damaged boots promptly to prevent ignition failure
Use proper spark plug removal technique to avoid boot damage
Always use genuine STIHL OEM ignition components for correct fit and durability
