Delphi Heated Oxygen Sensor - Downstream

The Delphi Heated Oxygen Sensor (downstream O2 sensor) monitors the exhaust gas after the catalytic converter. It helps the engine control module check catalytic converter efficiency and keep emissions within design limits. Delphi supplies original equipment parts to automakers, and its aftermarket sensors are built to the same standards.

Key Features:

• Downstream position: Reads oxygen content after the catalytic converter so the engine computer can monitor converter performance.
• Heated design: An internal heating element brings the sensor to operating temperature quickly. This allows accurate readings sooner after a cold start and more consistent readings during operation.
• Precision sensing element: Sends a reliable signal to the engine control module to support correct emissions control and drivability.
• OE-style construction: Designed to match the form, fit and function of the original sensor, with a connector and wiring built for a straightforward installation.
• Durable build: Made to withstand high exhaust temperatures, vibration and road contaminants.

A worn or failing oxygen sensor can cause a check engine light, poor fuel economy, rough running and failed emissions tests. Replacing it with a Delphi heated oxygen sensor (also called an O2 sensor or lambda sensor) helps restore proper emissions monitoring and engine performance. Select the correct child item for your application.