Yes, they are only good for either 60,000 or 100,000 mile depending on which type was used.
remove the old one and install the new one. They are threaded in.
It is the top one
you can't fix a sensor, you can replace one by removing it and installing the new one...:)
Could you tell me how would you replace the oil pump on a Mazda Protege?
How to know if air sensor not working on protege 2003
how to replace the thermostat on a 2003 Mazda protege es 2.0
How do you replace power steering belt on 2003 Mazda protege ?1.6
no sensor only a thermostat
How you replace the cabin filter mazda protege 5 2003
need to know what wire go were for a 94 Mazda protege MAF sensor
If you buy a o2 sensor socket at a parts store, and you have a propane hand torch, and wd40,your halfway done. Stubborn rusted may need heat to remove. disconnect harness on 02 sensor, slide on your socket and break it loose
how do u replace alternator belt on 2002 mazda protege 5 stationwagon