Bosch 00491133 Microwave Waveguide Cover

Microwave Waveguide Cover – Bosch

The microwave waveguide cover is the thin panel (typically mica or plastic) mounted on the interior wall of the microwave cavity that protects the magnetron waveguide opening from food splatter and moisture. When the cover becomes charred, burned through, or cracked from arcing, the magnetron can be exposed to food debris that causes further arcing, burning smells, or uneven heating. This direct-replacement waveguide cover restores magnetron protection and even microwave energy distribution inside the cavity.

Compatible Part Numbers

• 00491133
• 491133
• DRS-491133

Key Features

• Direct OEM-spec replacement – engineered to Bosch factory specifications for correct dimensions and material type at the waveguide opening
• Protects the magnetron waveguide from food splatter – cover prevents moisture and food particles from reaching the magnetron opening
• Restores even microwave energy distribution – undamaged cover allows microwave energy to pass through evenly into the cavity
• Eliminates arcing caused by a charred cover – replacing a burned cover removes the carbonized material that causes recurring arcing events

Fixes These Symptoms

• Microwave arcing (sparking) inside the cavity during operation
• Burning smell or scorch marks on the interior wall near the waveguide cover
• Waveguide cover visibly charred, burned through, or cracked
• Uneven heating caused by disrupted microwave energy distribution from a damaged cover

Compatible Brands

• Bosch, Thermador, Siemens

Always verify your model number before ordering. Check the label inside or on the back of your microwave to confirm compatibility.