Will not fit s334i and probably not most S300 series models that come with power head.1. It can be attached to an electric hose, as some reviewers have pointed out, but there's no mention of it not fitting perfectly. The slots that attach the hose end to the hose are only 1/4" from the end of the fitting. This distance at the end of the hose electrical connector is 1 and 5/8 inches, so there is no 1 and 3/8" at the end of the hose There are "inches that should be closed. This may be a minor issue, but it is less reliable than the original hose end. , Tabs make it easier to align the connector and notches prevent the connector from being inserted too deeply. Just enough for the clips to secure it to hold it in place. Since these tabs stick out far enough to get into the vacuum's electrical connection, I don't see how a model that uses a power head can allow this end of the hose to be inserted, unless You cut off tab 3. The insert on the other side fits, but is less than half the thickness of the original, so even if everything else fitted, it would be looser and I wouldn't expect it to last long.
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