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- 4144 405 1002 STIHL Spark Plug Boot – Genuine OEM Part
Description
4144 405 1002 STIHL Spark Plug Boot – Genuine OEM Part
The STIHL Spark Plug Boot (4144 405 1002) is a genuine OEM ignition boot designed for use in the ignition system on select STIHL trimmers, brushcutters, and edgers.
This spark plug boot connects the ignition lead to the spark plug and helps deliver consistent spark while providing insulation and protection from moisture, vibration, and debris. Replacing a cracked, loose, worn, or damaged spark plug boot can restore reliable ignition performance and prevent misfires, hard starting, or intermittent spark issues.
Manufactured to STIHL factory specifications, this OEM spark plug boot provides correct fitment, secure connection, and long-lasting durability.
Product Details
OEM Part Number: 4144 405 1002
Brand: STIHL (Genuine OEM)
Part Type: Spark Plug Boot / Ignition Boot
Application: Ignition System / Clutch Area (varies by model)
Condition: New Genuine OEM Part
Function
This OEM spark plug boot is designed to:
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Connect the ignition wire securely to the spark plug
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Deliver consistent spark to the engine
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Protect the ignition connection from moisture and dirt
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Reduce misfires caused by loose or damaged boot connections
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Replace cracked, worn, or loose spark plug boots
⚠️ A damaged spark plug boot can cause weak spark, misfiring, hard starting, or the engine to shut off intermittently.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4144 405 1002
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Your STIHL model is listed below
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Part location matches your ignition system / clutch diagram
⚠️ Always verify fitment by OEM part number for best accuracy.
Compatibility (Fits STIHL Models)
Edgers
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FC 70 (Ignition system, Clutch)
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FC 70 C-E (Ignition system, Clutch)
Trimmers / Brushcutters
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FS 70 R (Ignition system, Clutch)
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FS 70 RC-E (Ignition system, Clutch)
Installation Notes
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Turn off engine and allow it to cool
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Remove spark plug boot from the spark plug by pulling straight (do not yank the wire)
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If replacing the boot on the ignition lead, follow OEM routing and connection method
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Install STIHL OEM spark plug boot 4144 405 1002
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Push firmly onto the spark plug until it seats securely
⚠️ Always avoid pulling on the ignition wire itself, as this can damage the lead.
Maintenance Tips
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Inspect spark plug boot for cracks, looseness, or corrosion
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Replace if boot fits loosely or causes intermittent spark
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Keep ignition area clean and dry when possible
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Use genuine STIHL OEM ignition parts for correct fit and long-term reliability
