Getrags fit both the OM60X and OM61X engines; the 60X version gearbox has a starter wart on the left side of the bellhousing, the 61X version has a wart on the right.
The Getrag 4-speed and 5-speed gearboxs have an alloy case with an integrated bellhousing. The older MBZ 4-speed (and 5-speed) has a cast-iron case with a separate alloy bell housing.
Getrag 4-speed for the OM61X engine application:
Getrag 5-speed in foreground; cast-iron, MBZ 4-speed tranny in background - both OM61X application:
