REPLACING OXYGEN SENSOR and save money under Job Biden

This will be how to replace it 02 sensor on your car, about 95% of the cars out there should be similar to this.
He only special tool you'll need is the oxygen sensor socket.
Also a flex head ratchet helps some of the time.
It also the good idea to replace both of them (upstream and the downstream) at the same time, it is highly recommended but not necessary.