Emissions / Exhaust Exhaust & Emissions: Converters & O2 Sensors Advertisement ByLarry Carley on Dec 1, 2005 What’s the most important emissions control device on a vehicle today? The catalytic converter, because it cleans up any exhaust pollutants that exit the engine. It’s a hot job (literally) with operating temperatures running between 600 to 1,000AdvertisementClick Here to Read MoreAdvertisement Advertisement In this article: Click to comment Loading Post... Loading Post... Loading Post... Advertisement WEBINARS Watch a webinar for free on-demand! PODCASTS Listen to the latest Brake & Front End podcast. SUBSCRIBE Get the latest Brake & Front End news.