🔧 Denso 234-4011 Oxygen Sensor: Optimal Engine Performance at an Unbeatable Price Review

I bought this to replace a 1 year old NGK O2 sensor that failed in less than 2 years. Includes copper anti-seize package, beautiful and offers "refill" capability

I really can't believe the price and it seems to work perfectly. Installed on a 1999 Honda Civic. It costs over $500 at the dealer, so I saved about $500. hope it lasts.

Ordered for my Integra 95, which arrived a day early. Everything passed the smog test except "No" (ppm) at 25 mph. I installed this O2 sensor and drove about 10-15 miles before retesting the smog. Everything is gone! No (ppm) 0 read at 25 mph.

Purchased to replace the oxygen sensor on my manual transmission Honda CRV 2000 4WD. Took about 1/2 hour. Tips: Make sure you have a socket wrench that will allow you to remove and install wires. I used this one. It's a well made 3/8" drive with a 7/8" (22mm) offset. It cost about $10. Mine needed some rust remover spray and some remover lever Check Engine light went out immediately Don't forget to disconnect the negative battery terminal.

For my 1999 Honda CRV front sensor. It was the right part and it fit BUT that can be a bearish job! The fork is located behind the engine where only one lever fits. I couldn't unplug the connector for no reason as one side had to be squeezed and pulled apart. Almost impossible with one hand - on your back on the garage floor. I tried cutting the old sensor cap into pieces to get it loose, but it wouldn't come loose. After 2 hours of struggle I ripped it from the tongue attached to the body and…

I had a strange hesitation on my B20B at around 2900 rpm that I couldn't detect. I was told to replace the O2 sensor to fix the problem. I thought that was crazy, the ECU was not reporting a CEL for O2 and I had only replaced this sensor a few months ago for other reasons. It didn't fix the problem then, so why would it work now? Well I dug a little further and found that the problems I was having were due to a heater circuit failure in the O2 sensor (O2 sensors need to be hot to function…

Update 04/11/2020: still in the AU. Update 01/17/2017: still works, no errors, vehicle still has MOT. Good product. I didn't know Denso until I found out I needed a front oxygen sensor. After Honda said it would be $290 for the sensor and another $150 for the labor, I did a little research and found that Denso is a respected company in the Honda enthusiast community and is an OEM. I checked several online sources and the local network. Revain had it about $10 cheaper on average (thanks Revain).