The Buick Regal oxygen sensor is a small and often overlooked component that has an important job. Your Regal oxygen sensor is part of a network of sensors that measures the oxygen content in your exhaust. However, the Buick Regal oxygen sensor is the only one situated near the exhaust manifold, in the direct path of the exhaust that leaves your cylinders.

This means the Regal oxygen sensor provides the most accurate data concerning oxygen content to your car's computer-a process the Buick Regal oxygen sensor carries out hundreds of times per minute. If you are wondering why your car needs to know how much oxygen is in your exhaust, the answer is simple: your engine runs on a mixture of fuel and oxygen to create power through rapid, timed burning of fuel.

The Regal oxygen sensor assists your car in obtaining an optimal oxygen to fuel ratio of 14.7 to 1. When your oxygen sensor is not working, your car is basically guessing at the amount of fuel to be injected into the cylinders. Your car will err on the side of caution and inject too much fuel, since not enough fuel in the cylinders can damage your engine. A faulty Regal oxygen sensor wastes fuel, and can cause poor engine performance, foul smelling black smoke from your exhaust, and a serious decrease in fuel efficiency. It can be difficult to detect a bad oxygen sensor, but you may become aware of it during an emissions test.Check out our extensive online catalogue for a replacement Regal oxygen sensor at a great discount price.