An ACDelco Professional, premium aftermarket Manifold Absolute Pressure (MAP) Sensor is a high quality replacement for many vehicles on the road today. It measures the intake manifold pressure. The MAP sensor is a part of the fuel and engine management system. Its signal is used by the engine control module along with the throttle position sensor to calculate the amount of air entering the engine so that the correct amount of fuel is injected for optimum combustion. This premium aftermarket replacement manifold absolute pressure sensor is manufactured to meet your expectations for fit, form, and function.