VW connector pipe. This is an original equipment replacement exhaust connector pipe. It measures 42.5mm/1.67", and includes two clamps. It is found on the Jetta diesel from 1981-1992 to connect the header pipe to the front muffler; and the Passat 4-Motion with V6 or W8 to connect the center muffler to the rear. Sold each.
Installing the VW connector pipe will be much easier with the some muffler paste (#18977). The muffler paste will lubricate the joints until you get your exhaust system lined up correctly. Then once it is tightened up and started the paste will cure to create an air tight seal. The Bentley manuals for the Passat and Mk II Jetta and Golf are shown below. If you don't have one already, you should add one to your order so you know the proper procedures for fixing any issue on your VW.