The purpose of your Saturn PCV valve or the positive crankcase ventilation valve is to take the vapors produced in your vehicle crankcase during its normal combustion process, and redirecting them into the air and fuel intake system to be burned during the combustion process of your automobile. It is a part of your vehicle emission system, which is responsible for controlling the emission and exhaust of your vehicle. Generally, the PCV valve is an emission reduction device that has been used on most vehicles including the Pontiac's early models from late '60s up to these days. Since these vapors dilute the air/fuel mixture, it is important that they must have to be carefully controlled and metered in order to not affect the performance of vehicle engine. This fits the job of your Saturn PCV valve. It uses a sort of an engine vacuum in order to remove those vapors and reroute them back into your vehicle intake system where these can be burned rather than dumped into the atmosphere. Because of its importance to the proper functioning of your vehicle, it is important that you take care of it properly. Have a regular checking on this auto component in order to prevent any serious damage that can be caused by a faulty PCV valve. Same with other components on your vehicle, your Saturn PCV valve also requires a little maintenance. It is highly recommended to replace your old PCV if your vehicle traveled somewhere around 30,000 to 50,000 miles or refer to your vehicle owners manual for service intervals. A good PCV valve on your Saturn vehicle is not only good on its emission functions but as well as it can extend the life of your oil and engine. Find the direct replacement of your Saturn PCV valve here through browsing our online catalog.