Marineland PR2121 Impeller Assembly Emperor 400b Filter Parts for Aquarium

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.

Reduced noise of of unit considerably. Old impeller had a faulty rotating surface causing it to wobble. This solved the issue, and filter is much quieter than before the change.

It fits

Had to replace due to my part breaking. Works perfect.

Perfect fit

Fit perfect.

My Marineland Emperor 400 filter had become extremely noisy. Tried the vaseline trick to quiet the rattling noise but was unsuccessful. Finally decided to buy a new impeller. Replaced the impeller and no more noise. Works like its supposed to work. No complaints.

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.

Worked great for our needs. The unit was starting to sound really loud and it even stopped working a few times and Id have to play around with it to get it the filter to start working again. I replaced the impeller with this one and its worked perfectly quiet ever since.

Fixed my issue within 5 minutes. Thats 5 minutes start to finish. Noise level is down and the water flow has gone back to where it should be.