See part OPT-23 in the diagram
Fill Kit
The 4378951 is a fill kit for Whirlpool refrigerator and microwave and oven. Basic tools needed. Compare prices from top sellers.
Moderate Repair
Fits 3 brands
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1 store · Updated May 15, 2026
Lowest$263.80
4.4(3.1k)Preorder
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