When you want to boost the performance of your engine, the most important thing you can do is work on the manner in which your exhaust and fuel injection systems interact. No matter what your automotive priorities might be, proper function of both systems is crucial to great engine function: you simply cannot get the power and efficiency you want if your auxiliary systems aren't running at top capacity and efficiency. With the right Replacement Oxygen Sensor, then, you'll be amazed at the changes you can bring. The oxygen sensor is located in your exhaust system, where it is responsible for measuring the amount of oxygen present in your exhaust vapors. It then sends this information to the fuel injection system, which takes this into consideration when formulating the air-fuel mixture sent to the engine. With the right Replacement Oxygen Sensor, you'll be able to maximize engine efficiency by sending only the best possible mix of fuel and air to the engine itself, allowing for incredible engine function. A great engine relies on the right mix of ingredients in order to properly carry out the internal combustion processes - so make sure you've got a great Replacement Oxygen Sensor at work today. Auto parts customers understandably desire great help when shopping for high-quality auto parts for a car or truck. For our valued customers, we've built a twenty-four hour a day sales assistance bureau to help you with your requests. To sweeten the deal, all parts come with completely free shipping for each order $50 and higher. If you spot a lower price elsewhere, let us know - we always beat any price advertised elsewhere.