Stihl 4002 713 3017 Spool Insert Blades Introducing the Stihl paper air

Introducing the Stihl paper air filter

designed to equalize pressure by allowing clean air to enter

this durable polymer cap prevents foreign debris from entering

it includes a four spring anti-vibration system

Fits the following products: Sentei 21' (4177-39)

Stihl 4002 713 3017 Spool Insert Blades Introducing the Stihl paper airThis genuine Stihl spool insert is the internal reel for the AutoCut 25 2 trimmer head, used on Stihl grass trimmers and brushcutters. It is moulded from durable, impact? resistant plastic to handle regular use and exposure to debris. The insert holds and guides the cutting line so it feeds smoothly and consistently, helping the head bump and release line as designed.