This is a genuine Oase replacement impeller for the Aquarius Fountain Pump 1500 and the FP1500. It is designed to replace lost or damaged parts. Please check your pump's instruction manual to ensure this is the correct part for your model. This impeller is part number 18012 and is also compatible with other Oase products including Filtral 3000 (post 2019), PondoVario 1500, PondoMax Eco 1500, and PonDuett 3000.