Although impressive in his new role, his call-up by Sepp Herberger for the West Germany national team clash against Uruguay in April 1962 caused a great stir due to the fact he was not a top-division player at that time.
In the fixture he kept a clean sheet, something that saw him brought into West Germany's 1962 FIFA World Cup squad.
Despite his first cap seeing an impressive performance, it was expected that Hans Tilkowski would be the undoubted first choice for Herberger's West Germany side and Fahrian would just be taken as a reserve goalkeeper.
However, the 1962 FIFA World Cup brought disappointing results for West Germany, reaching the Quarter-final stage, which coincided with Fahrian's faltering career from then on.
In 2006, he worked as executive for ROGON Sportmanagement, one of the leading agencies in German football with clients such as Kevin Kurányi, Marcelo Bordon, Fabian Ernst, Halil Altıntop, Tim Wiese, Roque Junior and others.