What component transfers power from the engine to a manual transmission?

The component that transfers power from the engine to a manual transmission is the clutch. The clutch is a crucial part of the drivetrain that enables the driver to engage and disengage the engine from the transmission. When the clutch pedal is depressed, it disengages the clutch plate from the flywheel connected to the engine, allowing the driver to change gears without grinding or damaging the transmission. Once the pedal is released, the clutch engages, transferring engine power to the transmission and ultimately to the wheels.

This function is essential for smooth gear shifts in a manual transmission vehicle. Other components listed, such as the backing plate, transfer case, and torque converter, serve different purposes. The backing plate typically supports parts of the braking system, the transfer case is responsible for transferring power to all-wheel-drive or four-wheel-drive systems, and the torque converter is used in automatic transmissions to manage engine power and provide smooth acceleration. Therefore, the clutch is the correct answer as it directly facilitates the connection between the engine and the manual transmission during gear changes.