A++++++

This product does not work with the coffee maker. I fails to produce a good cappuccino. I wasted my money on this. Needless to say, my coffee maker is worthless without this part.

Fit my old unit perfect

Shipping was prompt. Does not work. Leaks before water gets hot enough to make coffee. Seller sent return postage invalid in the United states. Got a refund.

Works as expected. Speculate that seller source is not the OEM but is assembling stock that failed spec with the OEM who then sold it at a pittance to the seller source. Reasonable considering that the molded polymer neck exhibits crazing and stress factors indicating issues during the molding process. The supplied O - Ring to replace the stem seal is a red non silicon rubber type normally associated with plumbing (the original is most certainly clear silicon rubber). It took a few twists back and forth and downward pressure to work in the seat so that it engaged correctly. Lastly, as a caution I ran a narrow dia. Wire through the froth orifice to clear any residual flash or obstruction that might be lurking (in fact I was alert to this from reviews-as well as visual confirmation of a very weak flow of water through the port as a test). The wire cleared the port as water now flowed out just like my old one did so I prepped the unit to commence cappuccino making. Result. Rewarded with exactly what I expected; hot frothy cappuccino. Seller correspondence was great and part came like three weeks earlier than indicated so hats off to seller for excellent customer service. My advice as to product quality is to be prepared to inspect, be patient, and think through how to optimize the unit, and realize that yeah it may not be perfect. If you love your mukka express and you already popped for the gizmo to make it work again it's worth solving minor issues. Oh, and don't lose the little red o ring. It's barely noticeable mounted to the cardboard with cut out tabs from the cardboard so the thing could fly if you tear the package open. On the other hand the local hardware store sells tons of tiny silicon o rings so that should be easy to replace-just bring the mukka in with you and let the hardware guy find the right one. Fun fact: the USA is and will always be the plastic injection molding world class leader. We are that damn good!