Which component is not part of the M1120 Air Intake System?

Answer: B — Air compressor

The M1120 Air Intake System is designed to ensure that the engine receives clean air necessary for the combustion process. Within this system, essential components include the air filter, which filters out dirt and debris; the intake manifold, which distributes the air to the engine cylinders; and the throttle body, which regulates the airflow into the engine based on the driver's input. The air compressor, while important in various vehicle systems, is not a part of the air intake system. It typically relates to other systems such as the brake system or in some cases, turbocharged systems, but it does not directly interface with the engine's air intake function. Hence, identifying the air compressor as not being part of the M1120 Air Intake System aligns with understanding the specific roles each component plays within the overall operation of the vehicle's engine.