Lock till smutsvattentank för FH51000-serien

I was honestly worried about finding the right replacement part, but this lid locked into place perfectly with my existing tank. My carpet cleaner's suction is back to normal, and the whole process took less than a minute.

The seal on this lid is much tighter than the original, so I'm getting back that strong suction I'd lost. It clicked into place on the first try and the tank no longer leaks when I tip it to empty. My carpets are finally drying faster with this simple swap.

Fits the FH51000 tank perfectly and snaps on tight, so suction feels strong again during cleanups. The seal is solid enough that I don't worry about sloshing when I carry the tank to the sink. Exactly what I needed to get my machine back to normal.