Staff Answer
Sep 28, 2026 - 06:21 AM
With serial 837120, your N821 is below 9126825, so it takes the 637779 board kit. That kit is discontinued now. If the boards have failed, the Norcold N8X is the replacement fridge for the N821.
If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
