Compactor Switch Knob
Part # WP4155141·Whirlpool·WasherTrash Compactor

Compactor Switch Knob

The WP4155141 is a compactor switch knob for Whirlpool washer and trash compactor. No tools needed. Compare prices from top sellers.

Replaces: 4155141, 554939
Easy Repair

Fits 3 brands

Whirlpool
Estate
Kenmore

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Price Comparison

5 stores · Updated May 17, 2026
Parts DrLowest
$32.69
4.6(3.6k)In Stock
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PartSelect
$49.50
4.5(13.6k)In Stock
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ApplianceParts Pro
$49.51
4.8(21.9k)In Stock
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RepairClinic
$53.21
4.4(3.1k)In Stock
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Part Advantage
$28.71
4.8(728)Preorder
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This Trash Compactor Start Switch Knob, Red lets you start the trash compactor when you push or turn the knob. If your trash compactor’s current switch is broken or malfunctioning, replacing this part may alleviate the issue. This knob is red and measures 1-1/4" D. Installing this part will require basic hand tools, some some disassembly of the compactor and novice repair experience. You must unplug the compactor or shut off the house circuit breaker for the appliance before installing this part.

Part Specification
•  This product is a Factory Certified Part. These three words represent quality parts and accessories designed specifically for your appliance. Time tested engineering that meets our strict quality specifications
•  This product is a replacement part
•  Package contains (1) Trash Compactor Start Switch Knob, Red
•  Tools Needed: Multi screwdriver

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