Part Number: BHP-HD 452 012 Part Code: 85003012 This is a circulation pump for an EcoCute heat pump unit. For professionals and those in the service industry!! Note 1) Opened for photography. Note 2) General users can purchase this item, but we recommend that you have a professional or service technician handle the replacement. Note 3) Please ensure that the part is correct before purchasing. Returns and refunds are not accepted. Note 4) The heat pump unit is likely an OEM product of Denso.