234-9011 Upstream Air Fuel Ratio Sensor O2 Oxygen Sensor for Subaru 2002-2005 Impreza 2.0L-H4 2005 for Saab 9-2X 2.0L-H4 22641-AA042, 2349011, 22641AA042

Nice replacement for my defective upsteam O2 sensor. Using this in my 02 WRX and it works well. No check engine light, and no codes after using this for a couple weeks. Comes with anti-seize grease on the threads, and the plug fits perfectly with no issues at all. Great replacement product at a fraction of the OEM price.

I tried to save some money over the OEM Denso unit, but after I installed it and the P0171 CEL remained, I had a mechanic test this unit and they determined it was not functioning correctly/putting out a signal. So I now paid for both the Denso and this one. Learn from me and skip this one. Suck it up and buy the OEM Denso.

Bought for my 2005 Saab 92-x Aero. Part works as it should. Relatively easy install. It does not come with the clips you need to secure the sensor to the mount next to the engine block, so I just removed the airbox and secured it to the mount using zip ties. Overall, this is a good bang for the buck. OEM sensor is 200$ and this one was around 80. Works perfectly, removed check engine light for upstream o2.

A lot of cheap o2’s don’t work for the upstream spot on Subaru. I read some good reviews on this one so I decided to try it. Fits great and works great. Got rid of my Check engine light and got my AFR right. Save yourself 100+ bucks and buy this one.

Going off the other positive reviews and taking into consideration the unfortunate cost of the OE sensor, I took a chance on this little buddy for my 2003 WRX upstream o2. Hot dog, it worked ! The check engine light was on due to smashing the sensor during engine install. Once the battery was disconnected and the ECU reset no more CELs 🤙 for the price I'll probably buy a backup to keep habdy (just in case😉).

yeah no unlike the OEM denso sensor that last 100k miles this one didn't even last me a year....and that's the one I got to replace the one that crapped out after a few days. stay away from these these clown shoe wearing ....

Have a wrx that had a front 02 sensor problem. This sensor got rid of the code but when reading live data the sensor was going crazy reading full lean to full rich. Went to a name brand and car ran like new and easier to read when tuning

Solve my Cel without a trip to the mechanic or dealer. Easy to install with the right tools and so.e PB Blaster.

This sensor works great as a budget-friendly replacement for the OEM part. Installation was straightforward, and it’s been performing flawlessly so far. For the price, it’s hard to beat! Highly recommend it for anyone needing a quick and cost-effective fix.

Garbage sensor, gave me a p0171 code and made gas mileage awful, less than 200km of range on a full tank

Simple universal up stream . Works great no complaints . 1/2 the price of leading and works just the same . Used for 02 Subaru WRX

Installed on my 04 WRX and it’s back to running smooth. I usually will never touch off brand products but this sensor was excellent quality and has worked like a charm. No need to waste 100+ on an oem sensor, this does the job perfectly.

Cheap and it works, got rid of my check engine light