Fuel filter for a combustion engine

The inline fuel filter (10) has a filter housing (11) having an inlet (24) for fuel to be cleaned and an outlet (14) for cleaned fuel, in which a filter element (20) is arranged. A heating module housing (48) is connected with the filter housing by the rotating or plug-in connections (30,60). The heating module housing is screwed in the filter housing by a connector. A bayonet connection or a latching connection is connected to the filter housing.