4138 710 7101 STIHL Drive Tube Assembly Ø 25.4mm (1") – Genuine OEM Part The STIHL Drive Tube Assembly Ø 25.4mm / 1" (4138 710 7101) is a genuine OEM replacement drive tube designed for select STIHL HT-series pole pruners. This drive tube assembly is a critical component that supports proper power transmission and structural alignment between the engine/powerhead and the cutting attachment. Manufactured to STIHL’s exact factory specifications, this OEM drive tube ensures correct fitment, dependable performance, and long-lasting durability when replacing bent, worn, or damaged drive tube assemblies. Product Details OEM Part Number: 4138 710 7101Brand: STIHL (Genuine OEM)Part Type: Drive Tube AssemblyTube Diameter: Ø 25.4 mm (1")Application: Drive Tube / Shaft AssemblyCondition: New Genuine OEM Part Function This drive tube assembly is designed to: Provide proper structural support and alignment for pole pruner operationTransfer drive power through the shaft systemReplace bent, damaged, or worn drive tube assembliesRestore safe, stable, and reliable cutting performanceSupport long-lasting STIHL pole pruner durability ⚠️ A damaged drive tube may cause vibration, poor power transfer, or driveline failure. Verify Fitment in 30 Seconds Before ordering, confirm the following: OEM part number 4138 710 7101Tube diameter Ø 25.4mm (1")Your STIHL model is listed belowPart location matches your drive tube assembly diagram ⚠️ Always verify fitment by OEM part number for best accuracy. Compatibility Fits select STIHL pole pruners including: Pole Pruners / Long-Reach Units HT 73 (Drive Tube Assembly)HT 75 (Drive Tube Assembly – 42.2007)HT 101 (Drive Tube Assembly – 61.2006) ⚠️ This list includes common applications — always confirm using your parts diagram or owner’s manual. Installation / Usage Turn off engine before servicingRemove the old drive tube assembly from the unitTransfer required internal components (if applicable)Install STIHL OEM drive tube assembly 4138 710 7101Secure all fasteners and confirm alignmentTest operation before use ⚠️ Professional installation is recommended if unsure. Maintenance Tips Inspect the drive tube regularly for bends or damageKeep shaft components clean and properly lubricatedAvoid impacts that can deform the tubeUse only genuine STIHL OEM drive tube parts for best reliability