Whirlpool 4388931 Fridge Defrost Control Board Part

Whirlpool 4388931 Fridge Defrost Control Board Part

Marsoni

M251S

$133.90

Get it in 3 business days with 1 day shipping. Friday, May 29

Whirlpool 4388931 Fridge Defrost Control Board PartThe 4388931 Whirlpool Refrigerator Defrost Control Board is a crucial refrigerator part that ensures optimal performance. This OEM replacement part is designed to prevent excessive frost build up, enhancing your refrigerator's efficiency and longevity.

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We offer a 30-day return/exchange service after receiving.
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The Good: Changing the fluid in the lower unit is a very easy DIY job. This can save you hundreds of dollars each year by doing it yourself. The Bad: You need a special pump to change the oil, and sometimes it comes with the gear lube. Unfortunately this product did not come with it. Luckily my neighbor had an extra one from changing the lube a different boat laying around and was able to use that. The Ugly: If you have to go get the pump, that could cost a few extra dollar but is just an extra nuisance. The pumps are interchangable but you just need to clean it between uses (DON'T MIX DIFFERENT OIL BRANDS)

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Reviewed in the United States on October 28, 2025

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Joe H.

Battle Creek, US

★★★★★ 5

Works fine in outdrive

Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube

Good gear oil. Purple dye for leak detection

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Reviewed in the United States on April 2, 2026

Verified Purchase