Staff Answer
Sep 28, 2026 - 07:35 AM
Yes. With serial 833982, your N621 is below 9126825, so the 637779 kit is the right one. It's discontinued now, though. If the boards have failed, the Norcold N7X is the replacement fridge.
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.
