This did NOT fit my Echo blower. I was able to take the spring "plunger" part off and install it on my rotor assembly housing and make it work, but it was not a direct replacement.
It works and only about 1/2 the price of an OEM replacement carburetor.
Genuine, fits well, and it works. I hope I don't have the same issue with this unit as the one I needed to replace (broken plastic at upper radius limited travel of throttle shaft, causing inability to rev.)