What is referred to as the "gearbox"?

The term "gearbox" specifically refers to the housing that contains the gears and the mechanisms necessary for the transmission system to function. It is an integral component of a manual transmission, as it facilitates the shifting between different gears, allowing the driver to control the speed and torque of the vehicle. The gearbox houses not just the gears but also the shafts, synchronizers, and other related components that work together to transfer power from the engine to the wheels effectively. This is essential for the smooth operation of the vehicle’s drivetrain and optimal performance.

Other options describe different components of the vehicle, such as the engine control system, exhaust management, and fuel storage, which do not relate directly to the functionality or the physical structure encompassed by the gearbox in the context of a manual transmission.