A transmission oil cooler, e.g., for a transmission of a motor vehicle, e.g., an electric vehicle, is disclosed. The transmission oil cooling includes a housing including an upper section and a lower section. A heat transmitter is arranged on or in the housing. The lower section of the housing is simultaneously configured as a transmission housing cover for a transmission housing that can be connected thereto.

An adjustment mechanism for an adjustment device comprising a main worm gear wheel having a hollow central passage and a main worm. The main worm gear wheel is held in an injection molded plastic housing having at least one opening axially aligned with the central passage to allow a shaft to extend via the opening into the central axial passage to be in supporting engagement with the main gear. The main worm is held in the housing for rotation about a main axis of the main worm, and includes at least one circumferential spiral tooth in intermeshing arrangement with teeth on the circumference of the main worm gear wheel, and can be driven to rotation relative to the housing about its main worm axis. Stiffeners are provided between the housing and the main worm gear wheel and/or the main worm to lock the intermeshing arrangement of the teeth under torque.