O2 Sensor size/threadcount

[tkonnova]

Hi all,

Im looking for the size and threadcount of the before cat O2 sensor on a 2002 altima 4cyl. I got the check engine code read and it said O2 sensor, so i removed mine to replace it, but the O2 sensors threads got tore up on the way out. I need to buy a tap or bolt of similar size/thread to rethread the female threads of the cat to prep for installation of the new sensor i have.

Thanks all!

[QR25DE]

It'll never fit right. The metal is missing and you will have an exhaust leak/it won't thread in properly. You need to buy a new O2 sensor bung and have it welded in. (from experience).