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Your cart is empty.Denso Air and Fuel Ratio sensor is designed to detect the amount of the exhaust gas air and fuel ratio. It is constructed from durable material that is corrosion and abrasion resistant. This sensor features zirconia solid electrolyte integrated with alumina heater substrate which precisely controls the amount of oxygen concentration that flows into the diffusion layer to limit current flow. This sensor can easily be installed and ensures longevity.
AZ Rider
Reviewed in the United States on September 22, 2024
THIS FITS 2006 SUBARU FORESTER 2.5X WIRING HARNESS COUPLER WITH SOME WIGGLIN!
Tran Van Luong
Reviewed in Australia on June 3, 2024
i’m not recommendedit’s doesn’t workbought it last yearand now have same issuesso disappointedcheers
alberto omar tovar gonzalez
Reviewed in Mexico on May 5, 2024
Le quedó de maravilla a mi camioneta y la misma marca y el mismo modelo funcionó correctamente.
Customer
Reviewed in the United States on November 12, 2024
I own a 2008 5MT Outback with over 200k. The car has been fantastic. For the last couple years I've been getting a random "Catalyzer below threshold" code. I thought it was time to replace the cat converter (not surprising giving the miles). But I decided to try the anti fouler bung on the O2 sensor. It worked for a while, but my check engine light kept coming back while in the highway, disabling my cruise control (some "lean condition" code. On these Subarus, and many newer cars, the downstream sensor (after the converter), is not only to check the efficiency of the converter but also has something to do with the fuel trim). I finally decided to replace both O2 sensors (the car well deserves new sensors after all these years), and sure enough, the check engine light has not returned, engine runs smoother, and I should expect some improvement in the fuel mileage.So, if you're on the same boat, replacing both O2 sensors quite probably will do the trick, and it's way cheaper than the catalytic converter.One last thing....as many people before me pointed out...don't use cheaper sensors. These Denso ones are OEM, and work fine.
Customer
Reviewed in Canada on May 3, 2023
Replaced the front A/F sensor with this OEM part, fit perfectly and works perfectly, spend the extra to have a quality name brand, I had previously purchased a non name brand, trying to save some cash, it lasted 1 week, it looked the same until I actually measured the 2 sensors, the no name was actually longer, and the car kept throwing codes, once replaced with the Denso sensor, no more codes
Earl Woolery, III
Reviewed in Canada on September 27, 2022
Exact replacement fit perfectly and no issues once installed.
Dawne
Reviewed in the United States on August 12, 2021
Perfect fit!! Easy to install once old one is removed. Special removal tool is helpful.... I used the "Aoerzn Premium Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm)". Worked great.Came with original Denso box (see pic) and enough copper anti-seize to do 3-4 sensors.This is the EXACT part you would get from AutoZone. I know because I bought one there too because Amazon was super late in delivering and I needed to get it done.Our car was throwing a P0031 code. I replaced BOTH sensors (which is recommended). Other sensor was a 234-4445. Soooo glad I replaced both because the car is more zippy now.Note: Be careful removing the old sensor. If it won't budge, the pipe may needed to be heated to a cherry red with a torch.PS... If you find this comment helpful, please hit the "helpful" icon. Thx! 🙂
Fred Oliver
Reviewed in the United States on September 11, 2017
I bought this as an upstream sensor for 2007 Subaru with a 2.5 liter engine to replace an original after 225,000 miles. It came with some copper anti-seize compound. It looked like the original with one important exception-the wire connector was different than the original one in my car. I checked the part number several times, and even ordered another one from my local parts store to check it-the numbers match but the connector is different. Perhaps there was a change made after my car was made. Because I needed to get my car back together, I cut the connectors off and swapped my original onto the new sensor-the wires are the same, so it was just a minor challenge, but cutting into an expensive part made me nervous. The sensor has worked well-no check engine light, and the scanner showed fast response and good fuel trims.After almost 6 months and more than 10,000 miles, this is still working. There have been no error codes, fuel mileage is what I would expect and the engine runs great.Update. Almost 2 years later the engine is still running strong, good fuel trim, no sensor-related check engine light.Update. I got another one of these for another car, and in the process learned why I thought the connector was wrong. It has a plastic protective piece that I thought was part of the connector itself. Removal of the piece revealed the correct connector. That was a critical thinking problem on my part, and realizing the error of my ways has hopefully made me a better person in some small way.
John B. Rogers
Reviewed in the United States on October 29, 2017
it fit perfectly as far as the connector was identical oem. you want to only go with denso which is the oem supplier for subaru. price from this vendor is great, best i have seen anywhere. new at oreilly etc was $50 more cost! ck engine lite went out immed, car runs so much better as this going bad really messes up the fuel mixture- makes car run rich, so gas mileage is better and it runs way better, more power etc. this is the upstream 02 sensor, which is the one that takes the worst beating of the two 02 sensors in any vehicle. it should be replaced about every 80k miles, the downstream one can go longer. funny but my ck engine lights just got thrown, runs fine but something threw that, could be downstream sensor but car only has 90k miles so it should not be going bad this soon. supposed to go like 150k or more even because its downstream of the catalytic converter so it gets cleaner air and doesnt go down as fast as upstream which gets raw untreated exhaust. i did a ohm test on downstream and it was in spec, i did upstream prior to replacement and it was showing out of spec. ck engine analysis cemented the fact it needed replacement at about 90k mi, but actually the lite was throwing at about 84k. newer subarus are more sensitive to sensors, mine is a 2010. 2008 and older are not nearly as effected by sensor health as 2009 and newer.
Customer
Reviewed in Canada on December 22, 2015
Fit my 07 Subie Outback and got rid of my CEL code. Easy to install and less than half the price of dealer part.
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