No, the gearbox is made up of the gears; the clutch can be a separate element that connects the engine to the transmission. Clutches, bands, and servos are necessary areas in controlling gear shifting. Clutches and bands selectively engage and disengage portions of the equipment set, altering the equipment ratios. https://gearboxauto31728.madmouseblog.com/14634876/the-gearbox-auto-diaries