Norcold Gas Valve (637540) fits N611, N621, N641, N811, N821, N841, 1200, 1210, 2117, 2118 (replaces 628741 and 633726) This gas valve works on N6/ N8 model Norcold Refrigerators with a serial number greater than 9185699 and any 1200 model with a serial number above 9186770 and all 1210 models. N6/ ... See More