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Description
4243 641 7401 STIHL Cap – Genuine OEM Gear Head Part
The STIHL Cap (4243 641 7401) is a genuine OEM gear head component designed for select STIHL long-reach hedge trimmers and KombiSystem attachments equipped with 0° gear head assemblies. This cap helps seal and protect internal gearbox components while maintaining proper lubrication and structural integrity of the gear head housing.
Over time, gear head caps may crack, loosen, or become damaged due to vibration, debris exposure, impact, or repeated servicing. A damaged or missing cap can lead to grease leakage, contamination of internal gears, or premature gearbox wear. Replacing it with the correct OEM part restores proper sealing and protection without replacing the entire gear housing.
Manufactured to STIHL factory specifications, this genuine cap ensures correct fitment, secure sealing, and long-term durability under professional operating conditions.
Product Details
OEM Part Number: 4243 641 7401
Brand: STIHL (Genuine OEM)
Part Type: Gear Head Cap
Application: 0° Gear head assembly sealing component
Condition: New Genuine OEM Part
Function
This STIHL gear head cap is designed to:
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Seal and protect internal gearbox components
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Help retain lubrication within the gear head
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Prevent dirt and debris from entering the housing
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Replace cracked, damaged, or missing caps
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Support long-term gear head durability and performance
⚠️ A damaged cap can cause grease loss, contamination, or accelerated gearbox wear.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4243 641 7401
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Gear head configuration (0° assembly)
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Your unit model matches those listed below
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Application matches your STIHL illustrated parts diagram
⚠️ Gear head components are model-specific — always verify by OEM part number and attachment configuration.
Compatibility
This OEM cap fits select STIHL long-reach hedge trimmers and Kombi attachments equipped with 0° gear head assemblies, including:
Long-Reach Hedge Trimmers / Kombi Attachments
HL 56 K (Gear head 0° 500 mm)
HL 91 K (Gear head 0° 600 mm)
HL 94 / HL 94 K
(Gear head 0° 600 mm)
HL 0° (Gear head 0° configuration)
HL-KM (Gear head 0° 500 mm)
HL-KM 0° (Gear head 0° 500 mm)
HLA 135 K (Gear head 0° 600 mm)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
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Disconnect spark plug before servicing
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Access gear head assembly
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Remove damaged or worn cap carefully
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Inspect internal lubrication and surrounding components
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Install new cap securely in correct position
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Verify proper sealing and secure fit
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Test blade drive for smooth operation
⚠️ Gear head service should be performed carefully to prevent contamination or lubrication loss.
Maintenance Tips
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Inspect gear head housing regularly for grease leaks
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Maintain proper gearbox lubrication intervals
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Replace damaged caps promptly to prevent contamination
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Avoid impact to gear head during operation
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Always use genuine STIHL OEM gear head components for correct fit and durability


