I ordered 4 of these sensors in January as I was planning to change my tires on my 2003 Corvette which had original tires and sensors. I only ordered replacement tires in June and when I went to get these sensors pyrographed one of them didn't work so I had to quickly order another sensor and ship it quickly as the tires were already here waiting to be fitted. As it has been 6 months since I bought these sensors when I discovered that one of them was defective, it is not possible to get a refund for the defective part --- so order these electronic parts before you they will replace --- not after a few months. before as if I had made a mistake