Oxygen Sensor Rear
The Oxygen Sensor is mounted in the exhaust manifold to monitor how much unburned oxygen is in the exhaust as the exhaust exits the engine. Monitoring oxygen levels in the exhaust is a way of gauging the fuel mixture. It tells the computer if the fuel mixture is burning less oxygen or more oxygen.
GM Part Number: 12615194
Suitable for Chevrolet and GMC vehicles ranging from 2008 - 2010
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