Marineland PR2121 Impeller Assembly Emperor 400b Filter Parts for Aquarium

If your Emperor filter is loud and obnoxious, this is your answer! Mine was unbearable and I ordered this item and it was immediately quieter. The suction seemed to improve as well. UPDATE: Several months later, the Emperor with the new impeller assembly is still quiet and works well.

This impeller was just what I needed! It was easy to replace and my filter is now working like new!

I received this product is a timely manner. I bought this item for a back up so I have not used them yet.

It didnt make a difference. My pump was noisy before and after installing the replacement impeller its just as bad. Super upset! Ordering a new pump immediaty and diffenstly not a Marineland.

I was about to throw away the old emperor 400 filter due to the constant grinding and sucking sound it was making. I decided to buy this impeller for it just to see if I could fix it and sure enough the filter works perfectly! Super quiet

This replacement set makes my filter quiet like it should be! The magnet is much stronger than the original one, which helps keep it in place better.

I have owned Emperor 400s for at least 16 years now and this is the first time I have had to replace a broken impeller. But I did, and problem solved. I installed the impeller in seconds time. Im getting full water flow now. Its like a new filter. Im very happy indeed. Good Luck!

Pure joy replacing my noisy old impeller. Worth every penny!

Replaced broken (and very noisy) impeller on Emperor 400 filter. Compared to what we had, the noise level was reduced significantly. No complains so far.

Easy install on my Emperor 400. Before it would be loud and grinding, wheels wouldnt spin no water would go through the tubes. After install it was like brand new quiet.