Marineland PR2121 Impeller Assembly Emperor 400b Filter Parts for Aquarium

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

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

made a huge difference on an old filter, runs quiet again

Perfect fit, installs easy. Fixed noisy filter, Emperor is running perfect again.

Works better than the original.

Im pleased and really liked this product.

This works great. My old impeller was noisy after the rubber pieces fell off and some parts were bent after years of service. After putting this in the filter system, started right up with much less noise almost like new.

It is easy to install and uninstall for cleaning

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.

These are the redesigned impellers, and mine came with a new, redesigned bottom cover, too. I think Marineland got things right this time. If you have an old Emperor filter that was noisy from 5-10 years ago, those impellers actually were not made correctly (change of manufacturing location) and were very noisy. I managed to get some NOS prior build ones, but after 4-5 years they were getting tired. These are made with fewer parts and even less to go wrong, pump strongly, and the only noise I get is the flowing water, as it should be.