"master cylinder" in German master cylinder Hauptzylinder Detailed translations for "master cylinder" master cylinder master cylinder(also: main cylinder) der Hauptzylinder{masculine} Gasket's busted on the master cylinder reservoir. Source: opensubtitles.org Corpus by OPUS Request review Die Dichtung am Hauptzylinder ist hin. English synonyms for "master cylinder" master cylinder {n} brake cylinder hydraulic brake cylinder