What brand of O2 sensors do you guys prefer? My truck has 100k miles on it and I would like to swap out the front O2 sensors. There is nothing wrong with them that I'm aware of, just want to freshen her up. And I've been getting very poor gas mileage, so I'm attacking the issue from all angles, figure new O2's might help. Thanks!

 

If its got 100k on her and they bavent never been replaced thsn they would probly help..you cant go wrong with ac delco or delphi..ive run bosch before too with good results..

 

I just swapped out my two forward O2's on the 05. It has around 75000 miles on it currently and one was acting kinda lazy. I haven't relogged the 2 new ones yet but I went with Delphi's myself. Roackauto had both Delco's and Delphi's and the Delphi's were $20 a piece cheaper, lol. If yours are still working fine you probably won't notice a stitch of difference changing them out. After 100000 miles though they are past their service life so it won't hurt either.

 

I would recommend either AC Delco or Delphi. Steer clear of Bosh, a lot of people have had issues with them. I had a set that lasted all of three months before completely giving up in my truck.

 

Thanks, sounds like Delphi and AC Delco are the way to go. Funny because I always thought Bosch made good electrical parts.

Anyone know if these will work? I have zero problem reusing the old connectors, I'll solder the wires together. These are half the price of the direct-fit ones.

 

Ac Delco, NTK, Delphi, Denso...

 

Alrighty, just bought a pair of Delphi's on Amazon for $76, seemed like an okay deal. Hopefully they will help improve my poor gas mileage situation.

 

Any results on the gas mileage issue?

 

New O2's will be here next week. I'll install them and see what the results are. I have a scan tool I use everytime I drive to tell me MPG's. I put an underdrive pulley on, figure that couldn't hurt. Changed all the plugs already. Next step after the O2's is a fuel economy tune, I've heard that could be good for another 2-4mpg. Another 4mpg = an extra 104 miles on a tank, that's pretty amazing. I'd be stoked with an extra 2mpg.

 

I've lost 2 mpg over the past 2 months or so.. And have recently been having a mil light from heated oxygen sensor bank 1 sensor 1. I've cleared it several times.. Fuel mileage fell off around this time. 02's have 142,xxx on them. I ordered a set of cal speed headers and y pipe today and gonna do new denso 02 sensors via bud Hayes old posts I've found.