Genuine STIHL Primer Purge Bulb 4226-121-2700 - Fits FS KM Models 7/8 OD X 5/8 ID

Fix that hard-starting trimmer with this genuine STIHL primer purge bulb.

It's the real OEM part, number 4226-121-2700.

It fits a ton of STIHL models, including the FS40, FS45, FS46, FS55, FS56, FS70, FS90, FS91, FS110, and KM90 combi tools.

Basically, if you've got a brush cutter, string trimmer, or weed trimmer that needs a new bulb, this is it.

The dimensions are 7/8 inch outer diameter, 5/8 inch inner diameter, and 3/4 inch height.

It's brand new, made for 2-stroke engines running on gasoline.

One bulb in the pack.

If your old one is cracked, hard, or just not pumping fuel, swap this genuine STIHL part in and get back to work.