2000 323i

Has anyone replaced one if so it it easy?

shouldn`t cost more than 160.00 to replace it right? i hope
my car runs fine but my service engine light came on
every time that freakin light comes on i get crazy!!!
got it checked out at autozone along with 4 other manfacture codes it couldn`t read

any pics on how to replace the sensor
thanks

You need a 32mm wrench or a big ass adjustable. Other then that you wont be getting it out anytime soon. If you want it replaced go to the dealer. It should still be under warranty unless you have over 50k miles on it.

Out Of Warranty
How Do I Know Which One It Is
Is There Is A Intake And Exhaust Sensor?

WHen you look at your motor follow the flat plastic piece where the oil cap is. Look at the front of the engine and its right below that. It looks like a silver pipe thats about 2 inches in diameter. You also have to take off a bunch of other stuff which takes tools that regular people dont have.

There is a air flow meter which alows only so much air into the car.

There is a 02 sensor before the cat and on the header.

question: what code[s] did 'auto zone' manage to pull ? Before you start replacing parts.

Just change mine on the intake side. Not a big deal and you can order it at autobahnmotorcars.com. 86 bucks. and its the same price for the exhaust side, however it is a differant sensor.