See part 303 in the diagram
Main Board
The WB27X29821 is a main board for GE microwave. Basic tools needed. Compare prices from top sellers.
Replaces: 17170000018541
Moderate Repair
Fits GE appliances
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3 stores · Updated Jun 9, 2026
Lowest$131.41
4.8(21.9k)In Stock
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$95.26
4.4(3.1k)Preorder
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$125.68
4.5(13.6k)Preorder
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Common Problems This Part Fixes
Won't start
Display not working
Repair difficulty: Moderate - basic tools and 1-2 panels to remove
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