125K or just over.

 

i just did both front sensors this weekend. its a piece of cake. hard part is reaching the wire harness on the passenger side. its in a tight area. other then that you dont need a fancy tool. a 22mm open end wrench is all i needed to get both out and back in. you dont even have to be that creative in how you get it in there.

once they are out all you gotta do is copper grease the new ones and reverse. easy peesy