HELLA TC400 TC-400 Universal Automotive Tire Pressure Monitoring System Kit Add peace-of-mind with the HELLA Tire Pressure Monitoring System Universal kit for any car or light-duty truck with up to a total of seven sensors for monitoring spare tires or small trailers Easy installation with step-by-step instructions included Kit includes one adaptable-color display, four tire pressure sensor valves, one central data unit, harness and mounting instructions One Year Limited Warranty