Schrader AirAware 28155 TPMS Sensor Fits Chrysler Jeep (1-pack) TPMS sensors measure tire pressure and transmit this information via radio frequencies All transmitters are sold with cap core grommet and nut for applicable model Schrader AirAware TPMS sensors meet original-equipment quality and performance standards Schrader replacement sensors are made to fit specific applications based on vehicle make model and year Depending on vehicle Schrader TPMS sensors also measure tire temperature