Norcold DC Light Bulb 632545 (fits all models with an interior light) As stated in the product title, this light bulb fits all Norcold models with the interior light.  

Norcold DC Fan Thermostat 618093 (fits all models with fans) This is the fan thermostat that helps with air flow behind the cooling unit. If you have insufficient cooling and your fans are not...

Norcold Lamp Bracket Cover/ Light Cover 621827 (fits all models) This is the plastic light cover inside the refrigerator box. This fits all models with an interior light in the refrigerator...

Norcold Interior LED Light Assembly 638797 (fits N7, N8, N10 Polar Models) This is the interior LED light assembly that fits the following Norcold RV refrigerator models: N7 NA7

Norcold Light Bulb 640099 (fits the N10DC) This is the interior light that specifically fits the Norcold N10DC and N10DCSS model refrigerator.