Washing Machine Drain Pump Fluff Filter The filters perform a key aspect of the washing process in your washing machine, as they ensure that small objects do not reach the pump - and as a result helps ensure your clothes are cleaned to a consistent standard. Failure to clean or replace the filter may lead to loud vibrations, longer program times or drainage issues. This replacement filter from eSpares could soon solve the issue you have, and get you back to a fully working washing machine again. Genuine spare part for select Bosch, Neff, and Siemens washing machines. Please check the suitable model fit list to ensure that this is the correct part for your appliance.