VW Passat TDI catalytic converter with downpipe. Use this original equipment, direct fit catalytic converter to replace a rusted or damaged unit on your Passat TDI. This converter has an integral downpipe which hooks right to the exhaust output flange on the TDI engines' turbo. You will need to weld new fittings for the O2 sensors and emission control. The complete units are not available at this time.
If your VW Passat TDI catalytic converter has gone south, it is very likely that the rest of your exhaust system is due for a replacement. The exhaust system for the Passat TDI is shown below. You will also need the exhaust installation kit shown below to reattach the exhaust system to your car.