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Catalytic Converters… F ew people it seems understand the value of a catalytic converter —and why it’s important to keep it in good working condition. So, here are a few facts about catalytic converters (originally shared by How Stuff Works that can help you better understand and take care of your vehicle. 1. Reduce pollution. According to How Stuff Works, the main function of a catalytic converter is to convert harmful pollutants into less harmful emissions before they ever leave the car’s exhaust system. Many states regulate the amount of emissions allowed for a car to be registered, and a catalytic converter is an important part of meeting those standards. 2. Became standard in 1975. Catalytic converters weren’t part of automobile assembly from the beginning. In fact, they were introduced in vehicles as a standard in 1975 in response to laws regarding cars and pollution. 3. Prevent a number of harmful emissions. Three main emissions that a ...