Dorman 974-039 Mazda Direct-Fit Tire Pressure Monitor System (TPMS) Sensor Unique two piece design Direct fit assemblies Includes all necessary mounting hardware Replaceable aluminum valve stem is anodized for long-lasting corrosion resistance and may be serviced separately from the entire unit Comes with stem unit, grommet, washer, and hex nut for a complete installation Sensors are designed to accommodate installation angles from 5 to 26 degrees Dorman sensors work with all existing Tire Pressure Monitoring System (TPMS) tools OEM Part Number: GN3A37140B