VW clutch and flywheel assembly. This is the factory replacement from Luk for the dual mass flywheel and clutch setup for the TDI and 1.8T engines. The total package from LUK includes the 228mm flywheel, a new clutch, pressure plate, and a throw-out bearing. If your Jetta, Golf, or New Beetle has over 100,000 miles you should be prepared to replace both of these items at the same time. It does not make sense to go through the same labor twice.
The VW TDI clutch and flywheel kit is a direct replacement for the dual mass flywheel that comes with your Volkswagen, except its made by LUK. The dual mass flywheels are designed to absorb extra engine vibrations, and soften the feel when the clutch is engaged. If you are most comfortable with staying with the dual mass flywheel there is costlier OE alternative from Sachs shown below. There is also an option to move to the single mass flywheel by Sachs. These are popular to switch to because they are much more reliable than the dual mass flywheel, at the cost of some minor increased vibrations in the vehicle.