Review on 🔋 Denso 234 4668 Oxygen Sensor: Reliable Performance for Optimal Fuel Efficiency by Joey Pritchard

just replaced all 4 o2 sensors in my 05 silverado 1500. B2S2 low voltage indicator light. I always thought it had a slightly rough idle. The car is just over 140K. I'm pretty sure they were original due to corrosion but with the correct O2 but with the socket the degrade wasn't as bad as I expected. Just FYI if you are considering taking on this project. Take a suitable O2 head and a flexible key. Believe me, you will thank me. In any case, for the price, it makes sense to swap all 4 at once. Autozone wanted to charge for exactly the same $50 each. Now the car idles smoother. I'm also hoping my mileage improves as I average around 14mpg city. And for those confused like me, these sensors are interchangeable: precat and postcat.