Signswise Tire Pressure Monitor System Sensor 56029481AB TPMS for Chrysler Pacifica/Caliber/Compass Manufacturer Part Number:56029479AB, 56029479AA 56029479AB, 56029479AA Replaceable aluminum valve stem is anodized for long-lasting corrosion resistance - and may be serviced separately from the entire unit Sensors are designed to accommodate installation angles from 5 to 26 degrees sensors work with all existing Tire Pressure Monitoring System (TPMS) tools