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Denso 234-4189 Oxygen Sensor

Free shipping on orders over $29.99

$60.51

$ 28 .99 $28.99

In Stock

About this item

  • Efficient Fuel Consumption
  • Easy installation
  • Constructed from high quality material
  • Manufactured with precision to meet OE standards


Denso 234-4189 Oxygen Sensor


Zodiac Panda
Reviewed in the United States on March 7, 2025
Good quality. Direct fit for 2003 Tacoma 2.4L
david a.
Reviewed in the United States on August 20, 2024
Good install saved a ton of money going DIY. DO YOUR Wallet A FAVOR always go DIY if you can.
Jerry Taylor
Reviewed in the United States on August 17, 2024
Replaced the sensor in my 2002 Tacoma. No check engine light ever since.
thad
Reviewed in the United States on October 25, 2024
Fixed the P0420 i had on my 2001 Tacoma 3.4L Extra Cab
Frederick3589
Reviewed in the United States on August 16, 2023
Bank 1 sensor 2 , directly by the catalytic converter underneath the truck bed right before the rear wheel on passenger side. I purchased a cheaper off brand 2years ago it worked but check engine light came back on a few weeks ago. Decided to purchase the Denzo for $65 and it works perfectly. Installing is easy the connector plug under the passenger seat is easy to get to. I have the 04 tacoma 2.4L rear wheel base 5speed.
Kelly
Reviewed in Canada on November 19, 2020
Great product. Perfect fit.
cesar m.
Reviewed in Mexico on October 20, 2020
Exelente producto y precio.
Terry Lewis
Reviewed in Canada on March 25, 2018
Fits 2003 Tacoma 4 x 4 Extended cab , no problem , had hoped nuts were included , but weren't , they were 8mm thread , easy find
Euway
Reviewed in the United States on March 29, 2017
I have a 2000 2.7L Tacoma Pre Runner Regular Cab. The cable for this sensor is too long and there is no need for the rubber gasket. It's also missing a clip that inserts into a bracket near the muffler hanger. I had to double loop the cable and use zip ties so it doesn't hang. The perforated sensor tip is a smaller diameter than the original one. I'm not sure if this is the correct sensor, but research tells me it is. The check engine light is off and it seems to be running smoothly. The harness fits the plug. I'll update later.
Customer
Reviewed in Canada on June 3, 2016
Easy installation. Use a deep socket to work around debris shield. Two new nuts are required. Spray with PB blaster before to make removal of nuts easier. Got rid of my check engine light on my 2004 Tacoma prerunner!
ZEE bAAron
Reviewed in Canada on April 29, 2016
perfect fit and less than half the dealer price for the exact same part. make sure you verify your part number on the denso website before ordering.
JV
Reviewed in the United States on May 7, 2015
Works good but if your pulling a P0420 engine code the truth of the matter is that your catalytic converters are shot. I had the p0420 on my 2004 Tacoma v6 with 243,807 miles firstly I checked the old O2(rear)Bank1 sensor2 for resistance and it was shot,so I replaced it with this O2 the p0420 code went away for about 250 miles and then relit the light again the same p0420. Sadly I have 2 bad catalytic converters after checking out the 02 sensors voltage variations with an OBI code reader. Next step is what to replace the OEM cats with? Cheapest OEM Toyota cats Ive found are Front $914.57 and back $776.57 and a OEM exhaust $389.76,gaskets $7.43 a piece talking about $2095.76 for just the OEM parts. If you use non OEM parts you might be running the risk of not fixing the p0420 or prematurally failing parts, its a coin toss literally.
chad
Reviewed in the United States on December 5, 2015
My Tacoma was throwing a code for the o2 sensor, after some research I found that the Tacoma's work best when Denso or OEM sensors are used. Those with a 1st gen Tacoma, should make sure to they know the difference between the o2 sensor and the AF sensor at the front of the cats. I received my o2 sensor and after inspecting it put it into my truck. I cleared the codes and checked the sensor readings, SUCCESS! The sensor was reporting back within spec and I thought all was good. The next day while driving down the road I noticed that Torque App was reporting no reading from the o2 sensor that was just replaced. After the computer cycled my check engine light came back on as the o2 sensor was once again not showing a reading. Annoyed I checked the connections to make sure all was properly connected. I ended up having to send the sensor back for an exchange. I had my new sensor in 2 days and the second one worked like a charm when plugged in. Even though the first sensor appears to be have possibly been faulty, I would still give this item 4 stars. I would honestly give the sensor 5 stars if there wasn't that question of whether the first sensor was faulty or if my truck some how fried it. I would not hesitate to order this sensor again, and I still recommend it to all my friends with Tacomas.
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