* The engine: The primary power source of the vehicle.
* Transmission: Transfers power from the engine to the wheels.
* Radiator: Cools the engine coolant.
* Battery: Provides electrical power to the vehicle's systems.
* Alternator: Generates electrical power while the engine is running.
* Starter motor: Starts the engine.
* Various hoses and belts: Transfer fluids and power within the system.
* Wiring harnesses: Deliver electrical power and signals throughout the engine and vehicle.
* Fuse box: Protects the electrical system from overloads.
* Fluid reservoirs: Contain fluids like brake fluid, power steering fluid, and windshield washer fluid.
Essentially, it's the heart of the vehicle's mechanical and electrical systems, keeping them all together and protected.