Cat pressure sensors use capacitance or strain gage based technology that generates an output signal (Analog or PWM) that is proportional to the applied pressure. The sensors are available with a variety of electrical connectors and process connection types.Attributes: 15.9 Hex nut Small form factor Easy installationApplications: Pressure sensors can be used on engine related applications such as air systems, exhaust after treatment systems, fuel systems, engine oil systems, etc. Cat pressure sensors are application specific sensors.