The Marineland Penguin 350B Impeller Assembly replaces the impeller for the Marineland Penguin 350B power filter. Replacing an old impeller is essential to keep your filter running powerfully and efficiently.
Old impellers can result in decreased water flow, poor circulation, and, in some cases, even an unpleasant grinding noise. Replace the impeller to reinvigorate your filter with strong, silent water pull and maximum circulation.
Note: Will only fit Penguin 350B power filters.