The Dishwasher Drain Hose Carries Drain Water From The Dishwasher Drain Pump To The Kitchen Sink Drain. When Disconnecting The Lines Underneath The Sink, Be Sure To Place A Towel Down To Catch Any Leaking Water. Also Make Sure That The Sink-End Of The New Hose Is The Correct Size Before Installing. If Needed, You Can Cut The New Hose End To Fit The Sink End. Replacing This Part Will Require Basic Hand Tools, Minor Disassembly Of The Dishwasher And Novice Repair Experience. Remember To Unplug The Dishwasher Or Shut Off The House Circuit Breaker For The Appliance Before Installing This Item. Also Be Sure To Turn Off The Water Supply To Your Dishwasher Before You Begin. Helpful Tip: We Also Recommend Using Affresh® Dishwasher Cleaner* (Item W10282479) To Help Remove Limescale And Mineral Build-Up That Can Be Unsightly And Affect Your Dishwasher'S Performance. *Affresh® Brand Products Are Owned And Distributed By Whirlpool Corporation.