Parts for MW557 — Roper Microwave

We found 10 parts confirmed to fit the Roper Microwave MW557.

Compatibility table

All 10 confirmed parts, ordered so parts that fit fewer models (more specific to this appliance) appear first.
Part #PartAlso fitsReference price
785007DUCT-C ASM.This model only— · Amazon
785021DuctThis model only— · Amazon
785066LAMP SUPPORT ASM.This model only— · Amazon
785054LATCH BOARD-LOWERThis model only— · Amazon
785140LEVER SPRING-UPPERThis model only$28.73 · Amazon
785099Lamp CoverThis model only— · Amazon
785036Metal ShelfThis model only— · Amazon
785119SHAFT, STIRRER FANThis model only— · Amazon
785084Shelf HolderThis model only— · Amazon
785010Toro Valve GuideThis model only$2.93 · Amazon

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 MW557: 785007 (DUCT-C ASM.), 785021 (Duct), 785054 (LATCH BOARD-LOWER), 785119 (SHAFT, STIRRER FAN), 785010 (Toro Valve Guide).

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 MW557: 785066 (LAMP SUPPORT ASM.), 785140 (LEVER SPRING-UPPER), 785099 (Lamp Cover), 785036 (Metal Shelf), 785084 (Shelf Holder).

Before you buy

Match MW557 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 Roper Microwave models

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

Other microwave models

These model numbers sort close to this one in the catalog for the same appliance type. The brand is not confirmed to match, but the model number range is close.

Still not sure?

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