I'm showing a 378805 at this link, however, it may be cross referenced to a new number now, with a newer style pump. Yours is rebuildable, if that is the one you have. You might be able to buy a kit for it at Sea-way Marine.
Yea, that's kinda what I thought too. The ones now, are probably the little plastic throw aways, which are pretty much universal to a lot of the smaller motors.
