Comparable with the following models: WD-57733,WD-57734, WD-57833, WD-65733, WD-65734, WD-65833, WD-73733, WD-73734, WD-73833, WD-C657,WD-Y577, WD-Y657 WD57733, WD57734, WD57833, WD65733, WD65734, WD65833 , WD73733, WD73734, WD73833, WDC657, WDY577, WDY657. INCLUDES A 90-DAY DEFECT MANUFACTURER'S . This NEW lamp is sold COMPLETE with Module and Housing INCLUDED. Others sell ONLY the Lamp or Bulb which requires manual installation involving removing the old lamp and rewiring the new lamp into the existing housing. By purchasing the COMPLETE Module and Housing installation is quick and easy.