This manufacturer-approved timer (part number 3946430) is for washers, including Whirlpool washer model LA5500XSF1. Timer 3946430 activates the drive motor and controls the heating element in the dryer. Unplug the washer before installing the timer.Genuine Whirlpool part. Whirlpool brands include Whirlpool, Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and others. See all items in Washer Control Board. Whirlpool also makes various appliance models for Sears / Kenmore.Cross Reference InformationPart Number 3946430 replaces 1126, 3347766, 3351811, AH350107, EA350107, J27-641, PS350107.Not sure if this will fit your appliance?All we need is your Appliance's Model Number, we'll makesure this is the right part you need or sell you the correct one.Just scroll to the bottom of the page and click Ask a QuestionIf you need a part we do not have listed, contact us and we will list it for you