Several decades ago, the average Chrysler produced a large amount of environmentally damaging pollutants, but today's vehicles must have measures in place to reduce the amount of emissions from the engine. One of the most important parts in this process is the Chrysler oxygen sensor, which gives the computer important information about the levels of pollutants in the exhaust stream. If there is too much oxygen in the exhaust, it is a good indication that the combustion process did not fully complete, and that there is harmful unburned fuel in the exhaust. Using the information from the Chrysler oxygen sensor, the computer will then attempt to alter the ratio of air to fuel in the combustion chambers, to achieve a more efficient fuel burn. This process often happens several times a minute, in order to make the engine run at its highest performance levels, with the best gas mileage. If the Chrysler oxygen sensor fails, the engine will run poorly, because the computer will no longer be able to tune the engine correctly. Fortunately, the computer will alert you to the failure by illuminating a warning light in the gauge cluster. When you must replace the Chrysler oxygen sensor, you will find the proper part for most vehicles within the pages of our online catalog, and it is priced quite well, especially when that price is compared to those of your local retailers. Our version is made to the same specifications as the original, so it will perform just as reliably. The Chrysler oxygen sensor can easily be ordered, 24 hours a day, from our secure web site, or over the phone, with a toll-free call to our sales department.