4138 716 6500 STIHL Clamp – Genuine OEM Part4138 716 6500 STIHL Clamp Genuine OEM Part The STIHL Clamp (4138 716 6500) is a genuine OEM fastening clamp designed for use in the gear head and drive tube assemblies of select STIHL HT series pole pruners. This clamp helps secure components in place, supporting proper alignment, stable operation, and reliable performance during cutting. Manufactured to STIHLs exact factory specifications, this OEM clamp provides correct fitment, dependable holding