Description
Bosch 8733951177 Flame Sensor Overview
The Bosch 8733951177 is a genuine OEM replacement flame sensor designed to deliver accurate and dependable flame detection in Bosch heating systems. Flame sensors are a critical safety component in gas-fired furnaces and boilers — they confirm the presence of a burner flame and signal the control board to keep the gas valve open. A faulty or worn flame sensor can cause nuisance lockouts, short-cycling, and no-heat calls, making timely replacement essential for system reliability.
Key Features
- Genuine Bosch OEM replacement part — ensures proper fit and function
- Provides accurate flame rectification signal to the furnace or boiler control board
- Helps prevent nuisance lockouts caused by a degraded or contaminated sensor rod
- Supports safe burner operation by confirming flame presence before allowing continued gas flow
- Direct replacement for compatible Bosch heating equipment
Application
The Bosch 8733951177 flame sensor is intended as a direct OEM replacement for compatible Bosch furnaces and boiler systems. Always verify compatibility with your specific equipment model before installation. Installation should be performed by a qualified HVAC technician in accordance with all applicable local codes and the manufacturer’s service documentation.
Why Replace Your Flame Sensor?
- Oxidation and carbon buildup on the sensor rod degrade the microamp signal over time
- A weak signal causes the control board to shut off the gas valve, resulting in a no-heat condition
- Replacing with a genuine OEM part restores proper signal strength and system reliability
- Routine flame sensor inspection and replacement is a recommended part of annual furnace maintenance
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