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🚗 Tune In, Stand Out: The Oxygen Sensor Your Engine Deserves
The Walker Products 350-34039 Oxygen Sensor is a high-precision, 4-wire heated narrow-band sensor designed as a direct OEM replacement. Featuring a platinum electrode layer and a protective coating, it ensures accurate air-fuel ratio monitoring to enhance combustion efficiency, reduce emissions, and improve fuel economy. Engineered and tested in the USA, it offers corrosion resistance and easy installation, making it a trusted choice for professional-grade vehicle performance.












| ASIN | B01IAFTUDO |
| Best Sellers Rank | #142,225 in Automotive ( See Top 100 in Automotive ) #388 in Automotive Replacement Oxygen Sensors |
| Brand | Walker Products |
| Brand Name | Walker Products |
| Customer Reviews | 4.3 out of 5 stars 690 Reviews |
| Global Trade Identification Number | 00724620088636 |
| Included Components | One (1) Walker Products 350-34039 Oxygen Sensor |
| Item Dimensions | 2.2 x 2 x 5.9 inches |
| Item Highlight | Replaces 234-4274 234-4546 234-4547 234-4553 234-4559 234-4586 234-4770 234-4943 CTK-OSCH4001. OE-grade O2 sensor. |
| Item Type Name | Oxygen Sensor |
| Item Weight | 3.84 ounces |
| Item dimensions L x W x H | 2.2 x 2 x 5.9 inches |
| Manufacturer | Walker Products |
| Material | Ceramic, Metal |
| Material Type | Ceramic, Metal |
| Model | 350-34039 |
| Mounting Type | Flange Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Type | Electrical Signal |
| Part Number | 350-34039 |
| Specific Uses For Product | Oxygen Sensor |
| Style | Heated Narrow-Band Oxygen Sensor (Standard Replacement) |
| Style Name | Heated Narrow-Band Oxygen Sensor (Standard Replacement) |
| UPC | 724620088636 |
| Unit Count | 1 Count |
| Warranty Description | 90 Day Warranty |
C**I
Awesome product
Works great no issues. All 4 went in super easy took about 30min. No more codes. Definitely will be buying from this shop again thank you
A**S
Value for the money
1/2 the cost of auto parts stores and does the same job. Over a year of use and no codes.
M**P
O2 sensor
So far so good installed this on Bank too, which I believe both sides, pass and driver or bank too can use the same exact O2 set so when I installed it, it took away the code while I cleared the code and the code did not come back, so the O2 sensor is working the way it should for the price. I just don’t think you can beat it. Walker makes a great product.
G**J
Looks well made
Looks very good quality and value. I have not fitted it as my problem cleared after fixing a leaky water hose, I suspect it was somehow dumping too muck moisture into the exhaust system … causing the issue
D**M
It worked.
Worked for my 2013 Wrangler. Cleared code.
G**S
Didn't fix P2096 in 2012 Jeep JK, passenger side downstream.
Installed in a 2012 Jeep Jk, passenger side downstream, and the check engine light for P2096 was not fixed. Removed and replaced with a napa NTK, so far.. no light (second day with the napa part)
K**2
Perfect Fit - Works As It Needs To
Perfect fit. Wire length was just right. Plugged in just right.
B**.
Easy fix for my Jeep Wrangler
2015 Jeep Wrangler, code P0157. Replaced bank 2, sensor 2 with this Walker Products O2 sensor and cleared my code. Done. ✅
C**A
Nice sensor - Comes with thread treatment already applied for ready to go installation.
Perfect fit for the firewall side Cat O2 sensor. Existing sensors are 0.8v and this one is 0.72v Not sure it that matters, or if they generally fail upwards as they age. Computer is happy and check engine light is off. Make sure you get the 22mm O2 wrench which is a necessity and a snipe to extend your breaker bar to about 2.5 feet. Removal was while the car was lifted on the front passenger side to the maximum of the jack and then supported. That gives you the best angle to crawl under there head first if you are right-handed. The upper sensor would be a bit trickier and perhaps better to do from the top. Either way, if you have to do one of the firewall sensors you are doing all the hard work and should probably do all 4 on a higher mileage car. The front ones are easy.
J**S
Funciona como el original a un menor precio
Ajusta perfectamente eliminó código de falla...se instalo en dowstream lado piloto jeep liberty 2012
A**E
Ware Schrott
Nicht mal für au bestanden keine Werte. Neue gekauft bei andere Händler und schon bestanden.
J**A
Fit on 2020 Grand Caravan GT
Well if your like me your not interested in paying 200$ plus in labor fees for something you can do yourself, I got a 2020 Grand Caravan GT, 50 thousand KMs from a dealership and ofcourse... drive off the lot almost home and check engine light on, threw on scanner , said bank 1 sensor 1, couldn't find exactly that on Amazon, do took a chance on this one and if your in my boat this works for bank 1 sensor 1 !!!
I**O
excelente sensores
excelentes sensores a buen precio y funcionales, calidad OEM
Trustpilot
1 month ago
3 weeks ago