How to Install Microwave Light Bulb 6912W3B002K in a Kenmore Microwave
Quick answer: Unplug the Kenmore microwave and let the lamp cool. For the cooktop light, remove the cover screw on the underside and swap the bulb; for the cavity light on an over-the-range model, remove the vent grille and the small lamp cover at the top, then fit 6912W3B002K, close up and test.
The light bulb 6912W3B002K is the small incandescent lamp used in Kenmore microwaves such as the 72163263301, 72165002400, 72166109500 and 72169129010. Depending on the model it serves as the cooktop light under an over-the-range unit, the cavity light that comes on when the door opens, or both, since the same bulb is used in each position. When it fails, cooking is unaffected, but you lose the light over the range or inside the oven.
How you reach the bulb depends on which lamp has failed and how your microwave is built. The cooktop lamp sits behind a cover on the underside and is meant to be an owner job. The cavity lamp on many over-the-range models is reached through a small cover near the top, behind the vent grille, without opening the cabinet. On a countertop model the cavity lamp is usually behind the outer wrapper next to the high-voltage capacitor, which is a technician job unless your manual says otherwise. This guide covers each case and how to confirm the new bulb is seated.
See part details and every compatible model: 6912W3B002K
- Unplug the microwave or switch off its breaker before touching any lamp cover.
- Let the failed bulb cool; incandescent lamps stay hot for minutes after use.
- Do not remove the outer wrapper of a countertop microwave to reach the cavity lamp unless you can discharge the high-voltage capacitor safely.
- Stand on a stable stool, never on the range.
Tools and Parts You Need
- Phillips screwdriver
- Paper towel or clean gloves for handling the bulb
- Flashlight
- Step stool for an over-the-range unit
- Small dish for screws
- Soft cloth for the lamp lens
Step-by-Step Installation
- Identify which lamp has failed Press the cooktop light button and open the door. Note whether the surface light, the cavity light or both are out, then unplug the microwave.
- Cooktop lamp: open the cover On the underside of the microwave, remove the screw holding the surface light cover, hinge it down and wipe the lens while it is open.
- Cooktop lamp: swap the bulb Turn the old bulb counterclockwise and remove it. Thread 6912W3B002K in clockwise using a paper towel until snug, then close the cover and replace the screw.
- Cavity lamp: remove the vent grille On an over-the-range model, remove the screws along the top of the vent grille, tilt it forward and lift it off to expose the top of the microwave.
- Cavity lamp: open the lamp cover Locate the small lamp cover near the top front or side of the cavity housing. Remove its screw and lift the cover to expose the bulb.
- Cavity lamp: swap the bulb Remove the old bulb, fit 6912W3B002K without touching the glass and make sure it seats fully. Refit the cover and screw, then replace the vent grille.
- Countertop models If your manual does not show a lamp cover, the cavity lamp is behind the outer wrapper next to the capacitor. Have a technician replace it rather than opening the cabinet.
- Restore power and test Plug the microwave in, press the cooktop light button and open the door. Both lamps should light, and the cavity light should stay on during cooking.
Fit Checks Before You Call the Job Done
- The bulb is threaded fully into its socket with no wobble.
- The lamp cover and, if removed, the vent grille are refitted with screws snug.
- The cooktop light works at both brightness settings if fitted.
- The cavity light comes on when the door opens and during cooking.
- No fingerprints on the bulb glass.
Common Mistakes to Avoid
Opening a countertop cabinet to reach the cavity lamp The capacitor inside can hold a dangerous charge. Leave this to a technician unless you can discharge it properly.
Handling the bulb with bare fingers Skin oil shortens bulb life. Use a paper towel or gloves.
Cross-threading the bulb Forcing the bulb at an angle damages the socket. Start it straight and turn gently.
Leaving the lens greasy A greasy lens dims the light and traps heat. Clean it while the cover is off.
Troubleshooting After Installation
New bulb does not light It is not fully threaded or the socket contact is bent. Unplug, reseat the bulb and gently lift the center contact.
Bulb burns out quickly The glass was handled or the cover was left off. Fit a clean bulb and close the cover.
Cavity light out but cooktop light works They are separate bulbs. Replace the cavity bulb through the top cover on an over-the-range model.
Light flickers Socket contacts are dirty or loose. With power off, clean and reseat.
Care Tips After the Repair
- Wipe the lamp lenses when you clean the grease filters so light output stays bright.
- Keep a spare bulb on hand since both positions use the same part.
- Do not run the microwave empty; it heats the cavity and stresses the lamp.
Compatible Models (Sample)
This part is listed for 20 Kenmore models in our fitment data. Always confirm your exact model number on the appliance's rating plate.
Repair Difficulty and Time
Difficulty: Easy. Typical time: 10 to 25 minutes.
Frequently Asked Questions
Which Kenmore microwaves use bulb 6912W3B002K?
It is listed for Kenmore models including 72163263301, 72165002400, 72165002401, 72166109500 and 72169129010. Confirm your model number on the label inside the door.
Is the same bulb used for the cooktop and cavity lights?
Yes on the listed models, so one part covers either position. Check both lamps whenever one fails.
Can I change the cavity bulb on a countertop microwave myself?
Only if your manual shows an external lamp cover. Otherwise the bulb is behind the outer wrapper near the capacitor and should be replaced by a technician.
Do I need to unplug the microwave for a bulb change?
Yes. The lamp sockets are live whenever the switch is on, and unplugging takes seconds.
Final Checklist
- Failed lamp identified and microwave unplugged
- Bulb cooled before handling
- Cover or grille removed and lens cleaned
- New bulb fitted without touching the glass
- Cover and grille refitted with screws snug
- Both lamps tested with power restored