Review on 🔍 Denso 234 4732 Oxygen Sensor: Reliable and Precise Automotive Oxygen Sensor by Andy Metzger

NEARLY an exact match to the original part it replaced in my 2005 Subaru Forester X. . Not that it makes a difference, but this is the fourth O2 sensor I've recently replaced and the only one that doesn't exactly match the one I removed. Also, this one didn't have a clip in the middle of the cable that was meant to be attached to a bracket on top of the gearbox like an OEM part like all other O2 sensors. It doesn't bother me either because there is a large bundle of cables running near where the cable was supposed to run and I just wrapped the cable around that bundle to support it and keep the cable from hitting the moving parts touched before plugging it in . The wiring harness connector is exactly matched to the OEM and fits perfectly. Recently my car had a complete failure of the front O2 sensor, also known as the air/fuel ratio sensor. The car started but used too much gas and stalled when I stopped. Got a replacement for it at a local independent Subaru workshop due to a stopping problem. I had to disconnect the battery for a while so the computer would "forget" what it had learned about the failed sensor and so it could learn the new one. Without doing this step and then starting the engine at idle for about 10 minutes, the engine continued to stall like it did with the old sensor. It was like the computer thought it still had a bad sensor even though I cleaned up the code and it worked accordingly. After restarting the computer by disconnecting the battery, the car didn't start well the first time and idled very quickly until the computer recognized the sensor. Now it works like new again. My wife's car, an 06 Forester, has been throwing codes for a "underperforming" catalytic converter for a while and recently gave a new code for "fuel system too rich". I figured since mine had gone bad, she couldn't be far behind. I bought both oxygen sensors for her car from Revain for less than what I paid for the sensor on my car. I went ahead and got a new rear sensor for me too. Preventive maintenance, hopefully almost 200,000 more miles. So far, none of the cars have had their check engine lights on.