We've often been curious as to what an early Beetle would have been like with a VW catalytic converter attached. The power loss would have been dramatic--that's for sure. Fortunately, by the time the VW catalytic converter came into standard use, the power output of VW engines had increased enough to offset the emissions devices. And with that, the VW catalytic converter continues in use to this day. But a VW catalytic converter only works its magic when it's bolted up to a gasoline engine in good working order. We mention "gasoline engine." That's because you hear the occasional horror story during which someone puts diesel in a gas engine. The engine survives the encounter, but the VW catalytic converter is toast. Ditto the scenario involving an engine not in good working order. The byproducts of combustion turn out to be too much for the VW catalytic converter, and a failure occurs. It doesn't matter if you're talking about a VW Jetta catalytic converter or a VW Passat catalytic converter--clean exhaust is, ironically, important for the VW catalytic converter too. So, if you've had an encounter with diesel, a poor-running engine, or just bad luck, you can pick up a brand new VW catalytic converter right here. Just navigate to our application listings, choose your model, and we'll ship you a premium-quality VW catalytic converter at a great discount price.