Schrader 20398 TPMS Sensor Schrader is the global leader in TPMS innovation, design, quality, and technology More than 190 million Schrader sensors are in operation worldwide  more than 54% of the global vehicle market Patented Schrader technology embedded in all OEM and Aftermarket-replacement sensors Schrader offers direct-fit and programmable EZ-sensor replacement sensors Defect-free sensors manufactured in highly-automated, secure Schrader manufacturing environments Schrader supplies direct fit OEM sensor replacement