🔥 Denso 234-4205 Oxygen Sensor - Exceptional Performance to Enhance Fuel Efficiency Review

It was a bit of a hassle to reach 5lb hands into 2lb space to remove the original O2 sensor but not the sensor's fault. Looks like a quality item.

Fits perfectly but I had trouble replacing it myself as a spring loaded exhaust pin gap prevented removal. I ended up taking it to a shop and they installed it.

I had a check engine light on and replacing the gas cap did not solve the problem. My husband replaced the old oxygen sensor with a new Denso oxygen sensor, then disconnected and reconnected the car battery. Then the check engine light went out. Problem solved!

As the title says, it fits perfectly. To make it easier to remove the old O2 sensor, spray (2) - 12mm nuts with WD40 or similar and let sit. I also had to remove the small heat shield that was attached to the firewall using a 10mm ratchet wrench. Installation is the reverse order. Wait about an hour and make sure your car temperature is low before you start!

Not the cheapest stock sensor at Revain but it arrived as expected. Replaces the OEM perfectly, requires no adjustment or macgyvering to make it fit and includes a new gasket. Fits perfectly. I put a new sensor in and the engine light didn't go out right away, but after a few days of driving the engine light went out on its own. I think the computer has decided it can trust this new sensor. My gas consumption went back to normal immediately after the installation.

This was an exact replacement for the FRONT O2 sensor on my 2001 Toyota Corolla LE. Not just an exact fit, I mean an OEM exact replacement. Denso is a brand name used by Toyota, so use it for best results. You can't see it in the picture, but there is a connector at the end of the cable that plugs directly into the vehicle's wiring harness. Don't try to use cheaper sensors from other manufacturers that force you to cut off the connector on your car and splice the wires together, they don't! The

I replaced the upstream oxygen sensor on my 2001 Chevy Prizm (similar to a Toyota Corolla) with two Bosch sensors. The first broke after a few days. The second failed within a few weeks. I drove with the check engine light on for several months. That was a mistake, because probably my new catalytic converter had also failed. When I had to inspect my car, the mechanic replaced the same Bosch sensor, but I don't know what brand he used. This sensor also failed again within a short time. Finally…

Check Engine Light On. Plug in an OBD code reader and it says P0171, indicating the fuel system is running lean or rich and there is likely a problem with the O2 or MAF sensors. I removed the mass air flow sensor (next to the air filter) and cleaned it with a cleaning spray - nothing changed. Called a Toyota dealer to get prices for O2 sensors and was told that a 2000 Corolla has 2 sensors, one on the exhaust manifold and one next to the catalytic converter. I also found that most often the…