If you go visit a larger RV dealer, they should have a computer program put out by a major RV parts distributor that has breakdowns and schematics of most appliances. They should be able to break down that refrigerator to find the part number for that part and then see if they can order it. I'm sure it's something that no one stocks, unless on the slim off chance a customer wanted it, never picked it up, and they still have it sitting around.
2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9467.8 (as of 5/26/19)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR