I ordered them online hoping to save some money. My dealer wanted $60 each so getting them for under $60 for 4 of them was a great saving. I took them to my tire shop and when they fitted them 3 out of 4 were dead. I ended up paying $320 for tire fitting instead of the $80 I wanted to replace with tire pressure sensors. I urge you to buy another brand of sensors or just pay retail for sensors at your local car dealership. It was very inconvenient and added a lot to the cost, which I hadn't planned. All of this could have been avoided if the tire pressure sensors ordered here actually worked.