Norcold Power Board 637082/ 636852 (fits the 2118 model) This power board fits all Norcold 2118 model refrigerators regardless of the serial number. Both 637082 and 636852 are the same part number and fit all Norcold 2118 models.Fits these Norcold refrigerator models:2118 series: 2118, 2118IM, ... See More