European Auto Source
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Replacing front o2 sensors, easy?

Thread Tools Search this Thread
      08-06-2009, 10:56 AM   #1
Donkey Kong King

JohnL135I's Avatar
Drives: 2012 Boss 302
Join Date: Dec 2007
Location: Sahuarita, AZ

Posts: 1,129
iTrader: (3)

Replacing front o2 sensors, easy?

I might have a bad o2 sensor.

How easy is it to replace the factory o2 sensor(Pre Cat sensors) with AR downpipes? Is the wiring harness easy to unclip?

Whats the best option for a new 02 sensor? Dealer or Autozone?

Appreciate 0
      08-06-2009, 11:28 AM   #2
Major General

scalbert's Avatar
Drives: '08 E90 M3, '13 Volt, '08 Ody
Join Date: Feb 2007
Location: Woodstock, GA

Posts: 5,710
iTrader: (7)

It doesn't appear to be too bad. You will need to remove the sensor from below but the harness threads around the back of the engine and under the engine cover. Probably about an hour job.

You can get stock replacement units from a delear or autoparts store.

Appreciate 0


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -5. The time now is 09:16 AM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST