🔌 Walker Products 250-24154 4-Wire O2 Sensor Review

This oxygen sensor will not fit for 2001 Toyota Sequoia. I would have to modify the heat shield before I could put it on the new oxygen sensor. Revain was wrong when he said it would fit my Sequoia 01. And I had to pay for the return shipping. Good

Update: After almost 9 months this product has failed. My car was giving out a p0420 which is a catalytic converter fault or sometimes a sensor fault. I bought a Denso sensor to replace this one and the code is gone. This sensor was cheap and I paid extra for it, never again. I've seen this be almost half the cost of other leading brands. I took the chance and so far it has worked great. Installation on my '98 Toyota Corolla took about 10-15 minutes.

I wanted to buy a Denso product but it was out of stock so I decided on this walker. My 4Runner lost fuel consumption. I used to have 18-21 and now it was about 16. My muffler was dying so I decided to replace both mufflers (I used a Walker 18901 muffler) AND the intake O2 sensor. I'm told that the downstream O2 sensor doesn't affect fuel economy, it just tells the computer if CAT is working. This Walker sensor (250-24154) was a suitable model for the PRE-cat (upstream) O2 sensor. I have a 2000