For your Dometic RM 2600 RV refrigerator, the Dometic Refrigerator Cooling Unit - Part# 37358 is indeed the correct replacement part. Symptoms such as the refrigerator warming instead of cooling and yellow dust near the fill valve typically indicate a failing cooling unit. Before purchasing, it's advisable to verify the part number on the refrigerator’s internal sticker or plate, usually found around the door frame or rear panel. If you need assistance confirming compatibility, you can send photos to the Elkhart RV Parts team for expert verification. This genuine cooling unit part ensures reliable performance and is ready for straightforward installation to restore your RV fridge's cooling functionality.