3 pcs White Attachment Sleeve Replaces for Stihl 4140-791-7207 41407917207 Kombi System 390-791

What It Is

This is a set of three white plastic attachment sleeves designed to connect Stihl KombiSystem attachments (trimmer heads, edgers, blowers, etc.) to the drive shaft housing of compatible Stihl Kombi power heads. They replace the OEM part number 4140-791-7207 (also listed as 41407917207 or 390-791) and are used for securing attachments on Stihl’s multi-tool system.

Fitment & Compatibility

These sleeves fit Stihl KombiSystem power heads (KM 56, KM 90, KM 100, KM 110, KM 111, KM 130, KM 131, and similar models) that use the standard Kombi drive shaft coupler. Before buying, verify your power head’s model number and that the attachment you’re using has the same male coupler design (round, with two locking slots). Measure the sleeve’s inner diameter—it should match the 25 mm (approx. 1 inch) shaft diameter used on Kombi attachments. These are aftermarket replacements; they are not OEM Stihl parts but are made to the same dimensions. Check that your existing attachment’s locking pin aligns with the sleeve’s notch; some older or non-Stihl attachments may not seat correctly.

Key Things to Know

• Quality: Aftermarket plastic may be slightly less durable than OEM—expect potential cracking if overtightened or exposed to extreme cold. Most users report acceptable longevity for light to moderate use.
• Installation: Simple—slide the sleeve over the attachment shaft, align the locking pin, then insert into the power head and twist to lock. No tools required.
• Common gotcha: The sleeves can be tight on new attachments. Lightly sanding the inner bore or lubricating with silicone spray can help. They are not interchangeable with Stihl’s older “Quick-Connect” or “FixCut” systems.
• Value: At ~$7 for three, they’re a cheap backup—keep spares in your toolbox in case one cracks during a job.

Should You Buy It

Buy these if you own a Stihl KombiSystem power head and need budget-friendly replacements for lost or worn sleeves, especially for occasional use or as spares. Skip them if you need OEM durability for daily professional use, or if your attachment has a non-standard coupler.