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- 4140 710 7143 STIHL Drive Tube Assembly 1 m (HT-KM Extension) – Genuine OEM Part
Description
4140 710 7143 STIHL Drive Tube Assembly 1 m (HT-KM Extension) – Genuine OEM Part
The STIHL Drive Tube Assembly 1 m (4140 710 7143) is a genuine OEM 1-meter drive tube extension designed for use with the STIHL HT-KM KombiSystem pole pruner attachment.
This extension tube increases reach and allows safe trimming at height when paired with compatible STIHL KombiMotors. Manufactured to STIHL factory specifications, this OEM drive tube assembly provides correct fitment, smooth power transfer, and durable long-term performance.
Product Details
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OEM Part Number: 4140 710 7143
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Brand: STIHL (Genuine OEM)
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Part Type: Drive Tube Assembly / Drive Tube Extension
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Length: 1 meter (1 m)
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Application: HT-KM Drive Tube Extension (KombiSystem)
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Condition: New Genuine OEM Part
Function
This OEM drive tube assembly is designed to:
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Extend reach for the HT-KM pole pruner attachment
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Transfer rotational power through the extension tube
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Maintain correct driveline alignment and smooth operation
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Replace damaged, bent, or worn extension tubes
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Support safe and reliable attachment performance
⚠️ A damaged drive tube may cause vibration, binding, or driveline failure.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4140 710 7143
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Your STIHL KombiMotor model is listed below
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Part location matches your HT-KM drive tube extension diagram
⚠️ Always verify fitment by OEM part number for best accuracy.
Compatibility (Fits STIHL Models)
(Drive Tube Extension 1 m – HT-KM)
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KM 55 R
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KM 55 R-D
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KM 55 RC-E
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KM 55 RC-E D
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KM 56 RC-E
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KM 90 R
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KM 91 R
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KM 94 R
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KM 110 R
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KM 111 R
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KM 130 R
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KM 131 R
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KMA 130 R
Installation Notes
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Turn off engine and remove spark plug boot (gas models)
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Disconnect the attachment and powerhead
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Install the HT-KM 1 m drive tube extension between the powerhead and attachment
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Confirm correct engagement and smooth rotation before operation
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Test at low speed first to ensure proper driveline alignment
⚠️ Always follow STIHL safety instructions for extended-reach operation.
Maintenance Tips
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Lubricate the drive tube per STIHL specifications
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Inspect for bending, vibration, or unusual noise
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Keep coupler connections clean and properly tightened
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Use only genuine STIHL OEM driveline components for best performance
