This MAP Boost Sensor is a Manifold Absolute Pressure sensor built for Cummins N14, L10, M11, and ISM engines. It is a direct-fit replacement for these applications. This sensor monitors intake manifold boost pressure and feeds that signal to the engine control module for proper fuel and turbo boost management. Pro Gear and Transmission carries this part for shops and fleets running these Cummins engine platforms.Interchanges:Cummins 3084521Cummins 3408385Cummins 4921501WA902-18-7816FeaturesManifold Absolute Pressure (MAP) boost sensorFits Cummins N14, L10, M11, and ISM engines