Part # WD21X30847·GE·Dishwasher

Knock Sensor

The WD21X30847 is a knock sensor for GE dishwasher. Basic tools needed. Compare prices from top sellers.

Moderate Repair

Fits GE appliances

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Price Comparison

4 stores · Updated May 16, 2026

Store	Rating	Availability	Price
Part AdvantageLowest	4.8(728)	In Stock	$35.14	Go to Store
PartSelect	4.5(13.6k)	In Stock	$50.56	Go to Store
ApplianceParts Pro	4.8(21.9k)	Preorder	$35.54	Go to Store
RepairClinic	4.4(3.1k)	Preorder	$49.56	Go to Store

Lowest

$35.14

4.8(728)In Stock

$50.56

4.5(13.6k)In Stock

$35.54

4.8(21.9k)Preorder

$49.56

4.4(3.1k)Preorder

Genuine Part from GE Appliances,Check Your Model Number to Confirm Compatibility,Includes a One-Year Limited Warranty,

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