Keeping your carbon emissions down is always a good idea, and even if you use your car a lot, there are a few things you can do to minimize the dangerous emissions, as you have just discovered. Even older models of the Jetta are able to fit a VW Jetta catalytic converter, and you can often pick up this handy device very easily thanks to the large inventory on eBay. The VW Jetta catalytic converter works by converting any toxic pollutants in engine emissions by catalyzing what is known as a redox reaction. Simply put, this means that any toxins present are converted to harmless variations. The most common reaction is changing carbon monoxide into carbon dioxide, as well as oxidizing hydrocarbons. Even if you have an older Jetta, you can pick up a 2001 VW Jetta catalytic converter fairly easily, and simply pop to you mechanic to get it fitted. You can even do this yourself if you know your way around your vehicle. In the end, knowing you are causing a little less pollution is worth a little investment.Shop the large inventory of motors, parts, accessories, and Volkswagen catalytic converters!