This Used OEM MAP Sensor (Manifold Absolute Pressure Sensor) is mounted on the top of your upper intake plenum on all 2009+ Nissan 370Z and Infiniti G37 models equipped with a VQ37VHR powertrain. When these fail you may see Check Engine Light illumination and experience loss of power, and hesitation among many symptoms.

These are simple to replace. Removal of the strut bar is required to remove the upper engine cover. One bolt holds these in place on the upper plenum. 

Purchase a good Used OEM Map Sensor at a third of the price of a new replacement!