Bosch Wideband Air/Fuel Ratio Oxygen Sensor

The Bosch Wideband Air/Fuel Ratio Oxygen Sensor (also called a wideband O2 sensor or A/F sensor) measures the oxygen content of the exhaust gas. It gives the engine control unit a precise, continuous reading of the air/fuel mixture across a wide range, from rich to lean. The ECU uses this signal to fine-tune fuel delivery, which helps with efficient combustion, emissions control and drivability.

Key Features:

• Wideband sensing technology gives a continuous, accurate air/fuel ratio signal. A conventional narrowband sensor only switches between rich and lean.
• Planar sensing element design with an integrated heater. It reaches operating temperature quickly and gives stable readings.
• Supports precise fuel control, which helps maintain engine performance and fuel economy and keeps emissions within design targets.
• Built for durability against exhaust heat, vibration and contaminants.
• Bosch is an original equipment supplier of oxygen sensors to many leading vehicle manufacturers, and its sensors are engineered to meet OE specifications for fit and function.

A failing wideband oxygen sensor can cause a check engine light, poor fuel economy, rough idle or increased emissions. Replacing it with a quality Bosch sensor helps restore proper air/fuel feedback and engine efficiency. Select the child item that matches your application.