Bosch Microwave HMG8520SS Parts

This 120V, 40W oven bulb provides interior lighting so you can check cooking progress without opening the oven door. Designed to match OEM fit and heat-resistance for use in many ranges and wall ovens. What it does:

• Replaces a burned or broken oven light to restore interior illumination.
• Helps you see inside the oven without opening the door, reducing heat loss.
• Appropriate for ovens that require a 120V, 40W heat-rated incandescent lamp.
• Common symptoms it fixes: no light when the door is closed, flickering or dim oven light.

• Disconnect power before replacing the bulb to avoid shock—turn off at the breaker or unplug the appliance.
• Allow the old bulb and oven to cool completely before handling.
• Use a cloth or glove when installing to avoid oils from skin shortening bulb life.
• Follow the appliance manual for bulb access.

M4 rubber gasket creates watertight seal and reduces vibration around fasteners. Replace when worn, cracked, or leaking. Verify fit with your model number.

This thermal cut-off fuse prevents overheating by interrupting power to the appliance when temperatures exceed safe limits, protecting wiring and components. Replace a failed fuse to restore proper overheat protection and safe operation. What it does:

• Opens the electrical circuit if internal temperature rises above the fuse rating to stop heat build-up
• Commonly used on heating circuits and motors where temperature protection is required
• Symptoms of a bad fuse: appliance has no power to the heated circuit, intermittent heating, or complete failure of the affected function
• Passive safety device — it does not reset and must be replaced if blown

• One thermal cut-off fuse

• Disconnect power at the breaker or unplug the appliance before inspecting or replacing the fuse
• The appliance is cool and accessible; follow OEM disassembly steps for safe access
• Match the replacement fuse exactly to the original part number and mounting style; do not bypass or substitute with unverified parts