Want to replace O2 sensors. M54 -- What do I need?
Thread Starter
New Members
Joined: Dec 2016
Posts: 83
Likes: 1
From: Campbell, CA
My Ride: 2010 535i M-Sport
Want to replace O2 sensors. M54 -- What do I need?
Hi there,
First time DIYer changing out O2 sensors. My car is a 2004 525i experiencing poor MPG. I don't think the PO has ever changed the O2 sensors so I think it would be a good time.
Any links to sensors from sites that you recommend? Are the ones for bank 1 vs 2 different? For reference, I'm looking to replace pre-cat sensors.
Also -- are any special tools required?
Let me know what you think.
First time DIYer changing out O2 sensors. My car is a 2004 525i experiencing poor MPG. I don't think the PO has ever changed the O2 sensors so I think it would be a good time.
Any links to sensors from sites that you recommend? Are the ones for bank 1 vs 2 different? For reference, I'm looking to replace pre-cat sensors.
Also -- are any special tools required?
Let me know what you think.