Enhanced Denso 234-9120 Air-Fuel Ratio Oxygen Sensor Review

Do not install as I worked in 08 GR STI. I just installed a second 9120 in my 2008 with some Pro-Tunes which took almost five years to complete. 22mpg 400hp It's also still listed on the sensor website. STI.exe

I got code P0031 on my 2005 Subaru Outback XT (5MT) and ran the engine harder than usual and didn't want to spend close to $180 at auto parts stores. I put this bad boy on (after struggling with the old sensor) and after a while she turned good!

Perfect for my 2006 STi. A P0031 code for a bad heater element was fixed, but I swear the car now idles and pulls a little better than it's ever done on my property. The old clamps are very difficult to remove from the wiring harness bracket on the engine, but the new clamps are positioned exactly to attach to the new wiring harness. the set is perfect. It also came with a small copper ant whistle which is a nice touch. Uses a low profile TEKTON 47749 O2 socket and it did the job well…

If you get front oxygen sensor codes and you are "lean" (20.33 cruising AFR) and your fuel is dropping like it's hot then I'm me I am almost certain that this is the spare part for you. I figured I needed a new O2 sensor after rebuilding my engine after getting a CEL (Check Engine Light) and all of my symptoms above. I spoke to my tuner and he recommended this for turbo and upstream (male to female) setups. The installation went smoothly and everything was fixed immediately. Check out old and…

My 2005 Subaru WRX STi started out idling and with fluctuating throttle response while driving. According to the Denso website this is the correct part for this engine which is the same as dealer part #22641AA211 (which is of course more expensive) and rightly so. It's 30 inches long, which is exactly what's required and proved to be an exact replacement for the existing sensor. I haven't seen any evidence that this is fake. Replaced part, now everything is perfect. Maybe it will improve my…

I have a Legacy GT 05 station wagon 5-speed. My car constantly ran very poor or rich with no intermediate stages and stuttered quite a bit between 2-3k rpm and was a bit rough at idle. Installing this for the old sensor upstream immediately solved all the issues I've had with my machine since I bought it in December 2018. Now the car works like a dream! at the same time for a rather dramatic change in the handling of your car. My car is much more fuel efficient and runs smoothly all the time. I

Easier to replace than I expected, fixed my P0031 errors right away and maybe even helped with shifting? Listen to me, I bought my 2004 XT from my mechanic who got it as a "mechanic special" from a customer with 230,000 freeway miles. It always had a hard (clunky) shift between 2nd and 3rd, even though I paid to have the gearbox overhauled at a separate shop. I believe that in the 3 years that I've owned it, the 02 front sensor has been in a near-failure state, resulting in the ECU and TCU not…

I bought this to repair P1153 "O2 Sensor Circuit Range/Performance (High) (Bank1 Sensor1)". Check the engine light code on a 2005 Subaru Outback XT. I interpreted this as a front O2 sensor voltage reading staying high. The engine has done 121,000 miles and has been running on 3 cylinders for the last few thousand miles so I wasn't surprised that it destroyed the O2 sensor. This Denso 234-9120 part came with a connector that plugs directly into the engine wiring harness connector. . The silicone