Transmission replacement is a vital factor to the maintenance of the vehicle. It is because the gearbox, another term for this part of the engine, is the part that controls the speed of the vehicle according to the driver’s need and wishes. This part functions equally for manual and automatic vehicles but the implementation is different in some stage. For manual, it is the driver who manually switches from one speed to another. The shift is employed by making use of a clutch pedal that is stressed out when the driver wishes to change gears. Every shift needs the depression of the clutch to help release the previous gear and engage the required one.