This contactor is a direct replacement for many Rheem, Ruud, and Weatherking models. This part replaces Rheem Ruud Weatherking part numbers: 42-102851-01, 42-102851-02, 42-20029-01, 42-20044-04, 42-20044-05, 42-20044-02, 42-20394-01, 42-20394-02, 42-20618-01, 42-21318-01, 42-21600-02, 42-22360-01, 42-22645-01, 42-42139-03, 42-42139-04, 42-42139-05, 42-42139-06, 42-42478-04, 42-42728-03, 8401-267, 8401-284, 8401-291, 8401-292, 8401-5510, 8401-5529, 8401-5520, 8401-5521, and 8401-5539. This part is covered by the exclusive Protactor two year limited replacement policy. If this part fails within two years from date of purchase, return the defective part and a copy of the original invoice to the place of purchase for replacement. Contact the authorized Protactor dealer that you purchased the part from for details. Original equipment manufacturer's brand name(s) and part numbers are used for identification purposes only. This item is supplied by OneTrip Parts and meets or exceeds original equipment specifications.