Parts for WMFX421 — Sony
We found 11 parts confirmed to fit the Sony WMFX421.
Compatibility table
| Part # | Part | Also fits | Reference price |
|---|---|---|---|
| 23803573 | Door *nla W | This model only | $34.99 · Amazon |
| VRD8605342 | Home Electronics Service Manual | This model only | $43.99 · Amazon |
| 381056711 | Owner's Manual | This model only | $9.99 · Amazon |
| 206439 | Weider Hwkit,assy,s | 2 models | $59.49 · Amazon |
| 807624 | Briggs & Statton Carburetor | 3 models | $434.36 · Amazon |
| 7958758P01 | Rectifier | 3 models | $8.99 · Amazon |
| 391076401 | Lid | 4 models | $2.16 · Amazon |
| 438480 | Toro Decal | 10 models | $35.68 · Amazon |
| COV30314802 | Room Air Conditioner Duct Assembly | 34 models | $228.83 · Amazon |
| 9006907 | Water Heater Burner Assembly | 35 models | $275.82 · Amazon |
| DRNEXT4 | Drain Hose, Extension | 133 models | $25.09 · 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 WMFX421: 23803573 (Door *nla W), VRD8605342 (Home Electronics Service Manual), 381056711 (Owner's Manual), 206439 (Weider Hwkit,assy,s), 807624 (Briggs & Statton Carburetor), 7958758P01 (Rectifier), 391076401 (Lid), 438480 (Toro Decal), COV30314802 (Room Air Conditioner Duct Assembly), 9006907 (Water Heater Burner Assembly).
Water inlet and drainage
Symptom: The unit isn't getting water when it should, or isn't draining or pumping it out when it should.
Check: Check the valve or pump for a clog or jammed object, and confirm the hose isn't kinked, restricted, or routed higher than the unit allows.
Parts in this group on WMFX421: DRNEXT4 (Drain Hose, Extension).
Before you buy
Match WMFX421 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
Check inside a door opening, on a back or side panel, or behind a removable panel or drawer for a label printed with the model and serial number. 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.
Still not sure?
Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.