The replacement is extremely simple as it is mounted on the side of the valve cover You need to remove the tabs holding in the pcv Just disconnect the hoses and remove the mounting screws (a new gasket is also provided with the valve).
RKX VW & Audi 2.0T TFSI Upgraded PCV Valve Repair Kit – RKXtech
A brief introduction to understand the utility of the pcv (positive crankcase ventilation) valve
The pcv is located on the driver side of the engine bay just under the engine cover you just removed
