I recently replaced my engine in my Disco with a complete GPR rebuild and I'm very happy with the performance. However, I did not replace the O2 sensors and feel as though I am probably getting poorer fuel economy than I could be getting.

Currently I'm only getting about 10 MPG around town and I think I should be getting closer to 15 MPG.

For those of you who have done an O2 replacement, did you see an improvement in fuel economy?

What's the best brand and best place to buy direct fit O2 sensors?

 

You got that ab ad, didn't you!
Bosch is the way to go. I got around 14-15 before and after.

 

Been thinking about it for a while due to the occasional code, and the fact that I didn't change them when I did the rebuild, but yes, that's what reminded me again a couple of days ago...

I figured Bosch was the ticket... Best prices I've been able to find seem to be on partsgeek.

 

You can look on ebay or where ever you like to search, you are looking for the upstream (front) Bosch 15175, some places list it as being from 2001 onward and not compatible with a 2000 which is total rubbish. It is the same part for a 2000 d2. The downstream (rear) part number is Bosch 15630. You can pick them up for between $50 and $60 each.

 

Thanks for the part numbers...

 

Appreciate you posting the part numbers.

 

Ordered upstream and downstream sensors tonight...

 

I did the same. Ordered the Bosch for just 3 dollars more per.

 

I got all four (Bosch) from parts geek.com for a little under $200... Not bad.

Hope it improves my mileage.

I'll report back after installing and running a tank full of fuel through her...

 

Installed the O2 sensors today (all 4). I'll fill up the tank and see if I have any improved fuel economy. I've been getting about 10 MPG around town.