Parts for MWT4451D — Whirlpool Microwave

We found 6 parts confirmed to fit the Whirlpool Microwave MWT4451D.

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.

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 MWT4451D: 05200066 (Air Duct), 05200143 (Foam Seal).

Storage, trim and cosmetic hardware

Symptom: A cracked shelf, broken door bin, worn hinge, or missing trim piece -- cosmetic and storage wear rather than a functional breakdown.

Check: Match the physical dimensions and mounting tabs of the old part before ordering; these pieces are often model-specific even between visually similar models.

Parts in this group on MWT4451D: 05200150 (Bottom Hinge), 05200217 (Trim).

Door and drum seals

Symptom: A door or drum seal that has lost its grip, letting water or conditioned air escape past it.

Check: Inspect the seal for tears, flattening, or gaps, and check it against your model's part number before ordering.

Parts in this group on MWT4451D: 05200203 (Door Seal).

Heat control (thermostats, fuses, heating element)

Symptom: The appliance runs but heats or cools inconsistently, or shuts off partway through a cycle.

Check: With the appliance unplugged, check continuity across the part with a multimeter -- no continuity means it has failed.

Parts in this group on MWT4451D: 54001074 (Thermostat).

Before you buy

Match MWT4451D 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 microwaves, the model and serial plate sits inside the door frame. 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 Microwave models

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

• MWT4451D01 — 7 parts
• MWT4451D01%20P1173506M — 7 parts
• MWT4451D01P1173506M — 9 parts
• MWT4451WW — 5 parts
• MWT4451WW01 — 5 parts
• MWT4441D-P1119113M — 8 parts
• MWT4441D — 7 parts
• MVH210W-P1184201M — 9 parts
• MVH210E1-P1173501M — 10 parts
• MVH200W1-P1119109M — 27 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.