Parts for K399MDPLWB — Karcher Washer
We found 9 parts confirmed to fit the Karcher Washer K399MDPLWB.
Same parts list as K399MPLUS (Karcher Washer). K399MDPLWB shares an identical confirmed parts list with K399MPLUS (Karcher Washer). That page is the canonical version of this parts list — use it if you want the primary reference, or stay here since the list below is exactly the same for K399MDPLWB.
Compatibility table
| Part # | Part | Also fits | Reference price |
|---|---|---|---|
| 90367370 | Screw Fixing Handhold K39x | 6 models | $6.40 |
| 90367380 | Turning Knob K39x | 6 models | $7.60 |
| 90370380 | Holder Accessories New | 9 models | $11.59 |
| 90011870 | Inlet Elbow | 16 models | $29.84 |
| 90011040 | Spare Parts Set Control Head | 20 models | $45.92 |
| 90011050 | Spare Parts Set Cylinder Head | 20 models | $51.26 |
| 90363220 | Supporting Disk | 20 models | $6.40 |
| 90850340 | Switch 16a 3/4hf | 22 models | $9.93 |
| 90017410 | Front Housing Modular Compact | 30 models | $11.59 |
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.
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 K399MD-PL-WB: 90367370 (Screw Fixing Handhold K39x), 90367380 (Turning Knob K39x), 90363220 (Supporting Disk), 90017410 (Front Housing Modular Compact).
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 K399MD-PL-WB: 90370380 (Holder Accessories New), 90011870 (Inlet Elbow), 90011040 (Spare Parts Set Control Head), 90011050 (Spare Parts Set Cylinder Head), 90850340 (Switch 16a 3/4hf).
Before you buy
Match K399MDPLWB 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 washers, the model and serial plate sits under the lid or on the back panel. 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 Karcher Washer models
These model numbers sort next to this one in the catalog and are usually the same product family.
Still not sure?
Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.