Marineland PR2121 Impeller Assembly Emperor 400b Filter Parts for Aquarium

Perfect fit

It is exactly what it says. I bought a used Emperor 400 filter and the old impeller was bent which made the filter extremely loud. This one fit perfectly and has made the tank far more enjoyable for my ears and also for my fish who are now getting proper filtration.

Made my Trusty Emperor 400 as powerful as day one.

Just as expected

Pump works like new again. Last one lasted almost 10 years.

great spare part

Works great it quieted down my noisy filter. The shipping was a little slow but over all a good deal.

Too much for an impeller replacement

Dusted off my OLD Marineland Emporor 400 and it was unbearably loud. Had to sleep with the bedroom door shut - so bad. I replaced the impeller with this one and it cut the noise in half, at least. Still not silent but normal. Side by side, the top and bottom rubber/plastic bits on the old impeller had worn down noticibly. Worth this $25 to save an old, reliable aquarium filter and the cost of replacing it!

excellent product