All transmissions have two main parts: the gearbox plus the torque converter (or in the case of a manual transmission, a clutch). The gearbox is to blame for really shifting the gears, though the torque converter really helps to transfer the facility from your motor to the gearbox. Handbook transmission https://filtergearbox14397.blazingblog.com/34111937/the-2-minute-rule-for-filter-gearbox