234-4162 O2 Oxygen Sensor Upstream Downstream Compatible with Tacoma 2.4L 2.7L 3.4L Tundra 00-02 4Runner Pickup Sequoia T100 2.7L L4 95-98 2Pcs

Only needed one but it came with two, so changed both. Great value and perfect match.

Did not work with 2000 Tacoma pre runner 3.4l. installed and plugs did not match the sensor 1 bank 1. The downstream did match up but 2 days after installing light came back. Put Denso in both and no more code. So this was a waste to save a little I spent more.

Was surprised to find that gaskets didn't come with the part. Had to buy local which was another $25. Parts are working fine though.

Check engine light came on for one of them when i first installed on my 98 2.7 Tacoma. Cleared it and hasn’t came back in a month. Absolutely cannot beat these for the price

I got this for my 99 Tacoma and they didn't work it still shows a problem with the oxygen sensor.

Still work- even after blown headgasket. But is that good?

I purchased these for my wendy Toyota 4Runner 00 and the plugs are both the same. The O2 sensor towards the engine side has a different plug than the one towards the rear. It fits the one towards the rear but not the one towards the engine side. I don't know which one is downstream or upstream but one of them won't work. The company needs to change the description if they're going to sell two the same one.

Went right in with absolutely no issues