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🚗 Upgrade your ride’s brain with precision sensing—because your engine deserves the best!
The 234-9011 Upstream Air Fuel Ratio Sensor is a brand-new, direct-fit oxygen sensor designed for 2002-2005 Subaru Impreza 2.0L H4 and 2005 Saab 9-2X 2.0L H4 models. Featuring a 4-wire harness and a durable design rated up to 1350°F, it ensures rapid and accurate air-fuel mixture readings to optimize engine performance, improve fuel economy, and reduce emissions. Tested for safety and stability, it comes with a 1-year warranty, making it a reliable aftermarket replacement that keeps your check engine light off and your vehicle running smoothly.
| ASIN | B07CKZ7SXS |
| Best Sellers Rank | #665,216 in Automotive ( See Top 100 in Automotive ) #3,478 in Automotive Replacement Oxygen Sensors |
| Brand | Amrxuts |
| Brand Name | Amrxuts |
| Customer Reviews | 3.7 out of 5 stars 69 Reviews |
| Item Weight | 5.3 ounces |
| Manufacturer | Amrxuts |
| Maximum Supply Voltage | 5 volts |
| Measurement Accuracy | ±1.5% |
| Measuring Range | 12 - 16 (air-fuel ratio) |
| Model | 234-9011 |
| Mounting Type | Flange Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Type | Push Button |
| Part Number | 234-9011 |
| Specific Uses For Product | Oxygen Sensor |
| Style | Modern |
| Style Name | Modern |
| UPC | 672823541871 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 1350 °F |
M**N
Worked for 04 WRX
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.
M**N
Non-functional
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.
E**C
Perfect fit, no CEL
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.
J**D
Low cost alternative
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😉).
J**E
Good value
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.
T**2
Best alternative option to denso
One of the best non denso oem upstream o2 (wideband air/fuel ratio) sensors you can buy for under $150. Have gone through 2 other brands and they didnt work. Gave amrxuts my last hopes on not spending crazy$$$ for a o2 sensor and it hasnt failed me yet. Subaru satisfied
M**K
Lean AFR
Didn’t fix the AFRs car is still running lean. Had to return the O2 sensor don’t go for the cheaper option for a critical sensor bite the bullet and go OEM
A**R
Cheap, good working
Seemed to work just like it should at a fraction of the price!
M**S
Affordable OEM Replacement
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.
N**E
Will make your car run lean 2004 wrx
Garbage sensor, gave me a p0171 code and made gas mileage awful, less than 200km of range on a full tank
T**S
Works Great
Simple universal up stream . Works great no complaints . 1/2 the price of leading and works just the same . Used for 02 Subaru WRX
M**T
High quality for less
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.
A**R
Works
Cheap and it works, got rid of my check engine light
Trustpilot
1 month ago
1 month ago