Actuators receive signals from the powertrain control module and carry out adjustments needed based on the data the PCM received from the sensors.

The distributor is driven by the engine's camshaft and is responsible for timing the spark and distributing it to the correct cylinder. The distributor cap contains a rotor that connects the ignition coil (and its high voltage) to the proper cylinder at the proper point in the stroke cycle.

The master (brake) cylinder converts pressure on the brake pedal to hydraulic pressure in the brake lines.

The oil pan contains the engine oil reservoir of from four to six quarts of oil and feeds the oil pump through the oil pickup tube. An oil strainer floats at the top of the oil in the oil pan and screens debris from the oil before feeding it to the oil pump.

Spark plugs receive current from the distributor and use it to spark combustion in the combustion chamber of a cylinder.