Walker Products Narrow-Band Oxygen Sensor

The Walker Products Narrow-Band Oxygen Sensor, also called an O2 sensor or lambda sensor, monitors the oxygen content in engine exhaust and sends a voltage signal to the engine control module. The module uses this signal to adjust the air-fuel mixture for efficient combustion, lower emissions and good drivability.

Key Features:

• Narrow-band (conventional zirconia) sensing design that switches between rich and lean signals around the stoichiometric air-fuel ratio
• Available in upstream and downstream configurations, including direct-fit and universal-style options
• Built to meet or exceed original equipment performance requirements for response and durability
• Heated sensor designs help the sensor reach operating temperature quickly for faster closed-loop fuel control
• Protective housings and sealed construction help the sensor withstand exhaust heat, vibration and road contaminants

A failing oxygen sensor can cause poor fuel economy, rough idle, a check engine light and higher emissions. Replacing a worn sensor with a Walker Products Narrow-Band Oxygen Sensor helps restore proper fuel control and engine efficiency. Walker Products is a long-established supplier of emissions and exhaust components for the aftermarket.