Heating and Cooling› Thermostats, Housings and Fillers

Norcold

THERMISTER SERVICE REPL KIT

$31.83

SKU: N00G 638391

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Norcold 638391 is a thermistor assembly designed for RV refrigerators. This component senses the temperature inside the refrigerator compartment and signals it to turn on or off as needed to maintain the desired temperature. It features a 4-prong connector for easy installation.

This thermistor is compatible with all Norcold Polar N7, N8, and N10 refrigerator models, including variants like N7X, N8X, N10X, and others. It is a direct replacement part that can help resolve issues such as freezing, inconsistent temperatures, or a lack of cooling.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandNorcold
Part NumberN00G 638391

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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