Parts for CSB9120SJ2SS — GE Microwave
We found 10 parts confirmed to fit the GE Microwave CSB9120SJ2SS.
Compatibility table
| Part # | Part | Also fits | Reference price |
|---|---|---|---|
| WB27X10859 | Power Board PCB | 64 models | — |
| WB26X10193 | Microwave Turntable Motor | 73 models | — |
| WB08X10057 | Microwave Light Bulb | 100 models | — |
| WB17X10030 | Microwave High-Voltage Transformer | 140 models | — |
| WB24X817 | Microwave Door Interlock Switch | 179 models | — |
| WB24X0815 | Primary Switch | 279 models | — |
| WB27X10305 | Microwave Magnetron | 300 models | — |
| WB20X10048 | Microwave Thermostat | 320 models | — |
| WB27X10701 | Drive Capacitor | 435 models | — |
| WB27X10388 | Microwave Fuse | 541 models | — |
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 CSB9120SJ2SS: WB27X10859 (Power Board PCB), WB26X10193 (Microwave Turntable Motor), WB17X10030 (Microwave High-Voltage Transformer), WB24X817 (Microwave Door Interlock Switch), WB24X0815 (Primary Switch), WB27X10305 (Microwave Magnetron), WB27X10388 (Microwave Fuse).
Interior lighting
Symptom: The interior light doesn't turn on when the door opens.
Check: Confirm power is reaching the socket, then check the door-activated light switch before assuming the bulb itself is at fault.
Parts in this group on CSB9120SJ2SS: WB08X10057 (Microwave Light Bulb).
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 CSB9120SJ2SS: WB20X10048 (Microwave Thermostat).
Controls, timers and wiring
Symptom: A cycle that doesn't advance, an unresponsive display, or the unit not starting at all.
Check: Look for burn marks or a burnt smell near the board or terminals, and check whether buttons and knobs respond -- a unit that powers on but won't cycle often traces back to this group.
Parts in this group on CSB9120SJ2SS: WB27X10701 (Drive Capacitor).
Before you buy
Match CSB9120SJ2SS 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 GE Microwave 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.