Whirlpool Dishwasher Drain chop adapter assembly W11661859

Whirlpool OEM drain chop adapter assembly that connects the dishwasher sump outlet to the drain hose and includes an internal flapper/check valve.

Is This the Right Part?

Common Symptoms

• Dishwasher does not drain properly when the adapter is cracked, blocked, or damaged.
• Fine food particles or dirty-water residue remain on dishes when the internal flapper is warped or fails to close.
• Leakage at the sump-to-drain connection if the adapter is cracked or damaged.

Check Before Replacing

• Inspect the adapter for cracks, blockage, or visible damage.
• Inspect the internal rubber flapper for warping, separation, or failure to close.
• Verify the appliance model number before ordering because compatibility is model-specific.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool OEM part.
• Drain/sump adapter assembly.
• Internal flapper/check valve.
• Used on Whirlpool and Maytag dishwashers.

Installation Notes

• Disconnect electrical power before servicing the dishwasher.
• Shut off the water supply if required by the appliance service procedure.
• Confirm the model number and inspect the sump and drain connection before installing the replacement.

Verified Compatible Models

MDB4949SDE0, MDB4949SDE1, MDB4949SDE2, MDB4949SDE3, MDB4949SDH0, MDB4949SDH1, MDB4949SDH2, MDB4949SDH3, MDB4949SDM0, MDB4949SDM1, MDB4949SDM2, MDB4949SDM3, MDB4949SDZ0, MDB4949SHB0, MDB4949SHB1, MDB4949SHW0, MDB4949SHW1, MDB4949SHZ0, MDB4949SHZ1, MDB5969SDH0, MDB5969SDH2, MDB5969SDM0, MDB5969SDM1, MDB5969SDM2, MDB6949SDE1, MDB6949SDH0, MDB7949SDE2, MDB7949SDM1, MDB7949SDM2, MDB7949SDM3, MDB7959SHZ0, MDB7959SHZ1, MDB7979SHZ1, MDB8959SFE0, MDB8959SFE1, MDB8959SFE2, MDB8959SFE3, MDB8959SFH0, MDB8959SFH2, MDB8959SFH4, MDB8959SFZ1, MDB8959SFZ4, MDB8969SDE0, MDB8969SDE2, MDB8969SDH1, MDB8969SDH3, MDB8969SDM0, MDB8969SDM1, MDB8969SDM2, MDB8979SEZ1, MDB8989SHK0, MDB8989SHW0, MDB8989SHZ0, MDB5969SDH1, MDB6949SDH1, MDB7949SDE1, MDB8959SFZ0, MDB8969SDE1, MDB8979SEZ0, MDB8979SFZ0

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.