YIGUCS RV Refrigerator Heating Element 630811 (replaces 638374) 300W 120V — Fits Norcold N611/N811 Series

YIGUCS 630811 (replaces 638374) is a direct-fit 300W 120V heating element designed to restore AC heating performance in compatible Norcold RV refrigerator cooling units.

If your Norcold RV fridge cools on DC but struggles or stops working on AC, the thermal heating element may be the culprit. This YIGUCS replacement part matches OEM fit for a range of Norcold models and is built from durable metals and heat-resistant plastics to withstand repeated thermal cycles. It’s a single-piece swap designed to reinstall into the original cooling assembly, returning reliable AC heating function when installed correctly.

Which Norcold models does this heating element fit?

This heating element is engineered to be compatible with many Norcold cooling units produced after a specific serial cutoff. It fits popular series and model numbers commonly found in RVs and motorhomes.

• Fits Norcold N640, N81, N821, N822, N84, N1095 series and related models.
• Compatible with numbers such as 608, 618, 68, 98, 918 and similar units.
• Intended for units with serial numbers greater than 11232008 (verify your unit tag).

How does this part replace the original 638374 heating element?

The YIGUCS unit is a like-for-like replacement for part numbers 630811 and 638374, matching electrical and mounting characteristics. It delivers the same 300-watt, 120-volt rating needed by the original cooling system to restore AC heating function.

• Replacement number: 630811, designed to replace 638374.
• Electrical spec: 300W power draw at 120V AC.
• Form factor and terminal layout engineered for straightforward swap-in installation.

What materials and build quality can I expect?

The element is made from corrosion-resistant metals combined with heat-rated plastics to resist wear and thermal stress. These materials aim to reduce failures and extend the service life of the cooling unit under normal RV operating conditions.

• High-quality metal heating element for consistent thermal output.
• Durable, heat-resistant plastic components for insulation and mounting.
• Manufactured to withstand the temperature cycles typical of RV refrigeration systems.

What’s included and where to get help if installation is tricky?

The package contains a single heating element ready for replacement use. If you encounter fitment or installation questions, contact the seller for assistance—keeping your unit’s model and serial number on hand will speed support.

• Package includes: one (1) heating element (630811 compatible).
• Seller support available for installation or compatibility questions.
• Keep your refrigerator model and serial number when seeking help.

Who is this for? This replacement heating element is aimed at RV owners, technicians, and maintenance shops working on Norcold refrigerators that cool on battery/DC but underperform or fail on shore power/AC. It’s suited for those who prefer a direct-fit OEM-style swap, need a reliable 300W/120V part, and want a durable metal-and-plastic assembly built to resist corrosion and heat stress. Verify your fridge’s model and serial number before ordering to ensure compatibility and a smooth installation.