Parts for MDB8959AWB4 — Whirlpool Dishwasher

We found 14 parts confirmed to fit the Whirlpool Dishwasher MDB8959AWB4.

Compatibility table

Prices shown are an informational reference range only, not an offer or an Amazon price — RepairKitHub does not sell parts directly. Each part links to an Amazon search so you can compare current listings yourself.

Common failure areas on this model

The confirmed parts above group into a handful of failure areas. Here is what each points to and how to check it before you order anything.

Dishrack hardware (rollers, wheels and tines)

Symptom: A dish rack that binds, drags, or comes off its rail track when you pull it in or out, or a rack with a cracked, loose, or missing wheel or tine.

Check: Pull the rack fully out and check each wheel or roller for a crack or a missing axle pin, and check that tines aren't snapped off or pushed out of alignment along the row.

Parts in this group on MDB8959AWB4: WPW10251050 (Rack Adjuster), WPW10251051 (Rack Adjuster), W10082825 (Dishwasher Dishrack), 8565925 (Dishwasher Dishrack Slide Rail Stop, Upper).

General hardware and mounting parts

Symptom: A small mechanical or mounting part has failed, cracked, or gone missing.

Check: Compare the physical shape and mounting points to the original piece, and confirm the exact part number against your model plate before ordering.

Parts in this group on MDB8959AWB4: W10258708 (VENT), 8270018 (Dishwasher Wheel), W10199682 (Stop), W10158291 (Dishwasher Door Balance Link), 661663 (Fuse), 4396277 (BARRIER).

Water inlet and drainage

Symptom: The dishwasher won't fill, or dishes come out with standing water still in the tub bottom after the cycle ends.

Check: Check the inlet valve's screen filter for sediment, and check the drain pump and drain hose for a clog or a jammed object -- a piece of broken glass or a bottle cap is a common culprit.

Parts in this group on MDB8959AWB4: W10195750 (Dishwasher Drain Hose), 8558995 (Dishwasher Drain Pump), 8269144 (Dishwasher Drain Hose).

Heat control (thermostats, fuses, heating element)

Symptom: Dishes don't dry at the end of the cycle, or a heated-dry setting doesn't seem to do anything.

Check: With the dishwasher unplugged, check continuity across the heating element or thermostat with a multimeter -- no continuity means it has failed.

Parts in this group on MDB8959AWB4: 661566 (Dishwasher Thermostat).

Before you buy

Match MDB8959AWB4 exactly against the model and serial plate on the appliance itself before ordering anything — a single mismatched character can point to a different production run with different parts. Then check the part number printed or stamped on the part you are replacing against the part numbers in the table above; the printed number is the most reliable way to confirm fitment when a model has gone through multiple production runs. RepairKitHub does not sell parts directly — every part link above routes to an Amazon search for that part number so you can compare current listings and sellers yourself.

How to confirm this is your model

On most dishwashers, the model and serial plate sits on the edge of the door or the tub rim. Match every character exactly, including letters and dashes at the end — appliance model numbers often have similar prefixes but different suffixes for different production runs.

Neighbouring Whirlpool Dishwasher models

These model numbers sort next to this one in the catalog and are usually the same product family.

• MDB8959AWB5 — 14 parts
• MDB8959AWB6 — 14 parts
• MDB8959AWB7 — 13 parts
• MDB8959AWS3 — 13 parts
• MDB8959AWS4 — 13 parts
• MDB8959AWB3 — 13 parts
• MDB8951AWW10 — 9 parts
• MDB8951AWS10 — 10 parts
• MDB8951AWQ10 — 10 parts
• MDB8951AWB10 — 10 parts

Still not sure?

Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.