B58 Downstream Oxygen Sensor 11 78 8 611 294

Product Information

Your vehicle's oxygen sensor works with your engine control unit to optimize your engine's performance. The oxygen sensor is measure the proportion of oxygen in the exhaust sends input back to the engine control unit so it can modify the vehicle's air fuel ratio based off of it's current conditions. In doing so your Oxygen Sensor is a major part of your vehicle engine management and fuel consumption.

• Reduced fuel mileage
• Failed emissions testing
• A check engine light
• Poor drive-ability

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