Bought 4 Continental sensors for my Mazda3 from rockauto. Boxes came, but they look as if sitting on shelf for a long time. The sensor IDs are "smaller" than the ones currently on car which are 16 years old since I bought the car new. Three of the sensors' battery life is nearing the end, hence the reason for replacement. I included a picture in the post. There is a 5 digit code, 14027, hope it is not a date code, if it is, I will return them as I don't want to use a 10 year old sensor. Thanks.