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Denso 234-4261 Oxygen Sensor with 4-Wire 10” Harness for Lexus/Toyota V-6 Downstream Left/Front

4.4 4.4 out of 5 stars 750 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Automotive Replacement Oxygen Sensors by Denso

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Brand Denso
Material Zirconium
Item Weight 4.2 Ounces
Style Modern
Mounting Type Flange Mount

About this item

  • Designed to detect the amount of oxygen in the exhaust system , thread diameter - 18 mm
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
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Denso 234-4261 Oxygen Sensor with 4-Wire 10” Harness for Lexus/Toyota V-6 Downstream Left/Front
Denso 234-4261 Oxygen Sensor with 4-Wire 10” Harness for Lexus/Toyota V-6 Downstream Left/Front
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Price-26% $47.12
List:$63.64
-14% $34.99
Typical:$40.90
$6.99$41.30-27% $48.05
List:$65.85
$55.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Value for money
4.2
3.5
4.0
4.6
3.5
Easy to install
4.2
4.1
3.9
4.6
4.1
Mileage
3.8
3.1
3.7
4.4
3.1
Easy to remove
4.2
4.6
4.2
Sold By
Amazon.com
Marsflex
YOGEIER
Amazon.com
Amazon.com
Marsflex
specific uses
Oxygen Sensor
Oxygen Sensor
Molybdenum
Oxygen Sensor
Oxygen Sensor
Oxygen Sensor
material
Zirconium
Steel
Zirconium
Zirconium
mounting type
Flange Mount
Flange Mount
Flange Mount
Threaded
Flange Mount
Flange Mount
style
Modern
Upstream
Compact
Modern
Modern
Upstream

WARNING:

CHOKING HAZARD -- WARNING: This product contains small magnets. Swallowed magnets can stick together across intestines causing serious infections and death. Seek immediate medical attention if magnets are swallowed or inhaled.

From the manufacturer

-

Denso 234-4261 Oxygen Sensor

Description:

Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The sensor element then sends voltage signals back to the engine management system to regulate the air to fuel ratio, for optimum efficiency. Denso oxygen sensors feature an aluminum-oxide trap layer to protect the ceramic from silicone and lead poisoning, preventing damage to the platinum electrode.

  • Double protection cover maintains proper unit temperature for quicker response times and protects the ceramic element from contamination
  • Stainless steel housing resists corrosion and contamination with a rugged, watertight body
  • Porous PTFE filter allows atmospheric oxygen the enter the sensor without permitting water or engine contaminants to seep into the casing

Product Description

Denso Oxygen Sensor is designed to detect the amount of oxygen in the exhaust stream. It is constructed from high quality stainless steel, porous polytetrafluoroethylene, fluorine rubber, aluminum oxide, high-grade platinum and ceramics. This Sensor features double protection layer, aluminum oxide trap layer, porous PTFE filter and stainless steel housing. It is manufactured with precision to meet OE standards. This oxygen sensor can be installed easily and ensures longevity.

Product information

Technical Details

Additional Information

Warranty & Support

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Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Denso 234-4261 Oxygen Sensor with 4-Wire 10” Harness for Lexus/Toyota V-6 Downstream Left/Front


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What's in the box

  • OXYGEN SENSOR
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    750 global ratings

    Customers say

    Customers like the value, fit and ease of installation of the electronic sensor. For example, they mention it saves them hundreds of dollars from the dealer, it puts out the check engine light and that it fits perfectly in the exhaust pipe. That said, they like the performance. That being said, opinions are mixed on the quality.

    AI-generated from the text of customer reviews

    39 customers mention35 positive4 negative

    Customers like the performance of the electronic sensor. They say it works well, has no codes, and is better than the OEM part. Some customers also mention that it's easy to install.

    "...It's the direct factory replacement and works perfectly." Read more

    "...This is the real deal Denso sensor, and works as advertised." Read more

    "...They worked fine and put out my Check Engine Light. I been driving iwth them for months with no issues." Read more

    "...Sport Edition 4.7L V8Bank 1 Sensor 2 (downstream)Worked great...." Read more

    26 customers mention26 positive0 negative

    Customers find the installation of the electronic sensor to be easy. They mention that the sensor is easy to install and replace on their own, with a wrench and some WD-40. Some say that the sensors can be accessed with ramps and that no modification is needed. Overall, most are satisfied with the ease of installation.

    "...The new one threaded into place easily. Don't forget to use all the included anti-seize compound on the threads when you install it...." Read more

    "After reading all the reviews and comments, this was the easiest fix on my vehicle ever!..." Read more

    "...The cost here was $45. When I opened it up it looked pretty straight forward to install so I slid under the truck and had it installed in less than..." Read more

    "...The sensor was real easy to install and came with a small amount of needed anti-seize grease (saved me a trip to the store)...." Read more

    25 customers mention20 positive5 negative

    Customers like the fit of the electronic sensor. For example, they say it fits perfectly on their 2001 Toyota 4Runner SR5 with 190,000 miles, and in the exhaust pipe with no modification needed.

    "This was an exact fit for my car. The threads were already lubricated with an anti-seize compound, which wasn't stated anywhere." Read more

    "This was an exact fit for the replacement - the only installation issue is the small difficulty to unplug the old sensor" Read more

    "...This sensor fit perfectly in the exhaust pipe with no modification needed at all...." Read more

    "Perfect fit quality product for my 07 fj cruiser" Read more

    17 customers mention17 positive0 negative

    Customers appreciate the value of the electronic sensor. They say it is a great product and easy to install. Customers also say it saves them hundreds of dollars from dealer and is able to work in cramped spaces.

    "...Great alternative to OEM price. I replaced both exhaust sensors at the same time, and it took about 30 min." Read more

    "...Easy to install and saved me hundreds of dollars from dealer." Read more

    "...oh, and saved a lot of money." Read more

    "This a very valuable tool, especially for someone working in cramped spaces. Well worth the small investment." Read more

    8 customers mention8 positive0 negative

    Customers are satisfied with the check engine light sensor. For example, they say it's a perfect fit and has extinguished the light.

    "...Check engine light cleared itself and a few months later we're still good to go!..." Read more

    "...The light has stayed off so far. I sprayed PB Blaster several days prior to trying to remove the old one and it came off pretty easy...." Read more

    "...They worked fine and put out my Check Engine Light. I been driving iwth them for months with no issues." Read more

    "...far after resetting the codes and riding my Lexi for 200 miles no more warning lights." Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the fuel efficiency of the electronic sensor. They mention that the engine runs smoother, consuming less gas.

    "...Also, I've notice a little pep in the engine and I am getting better fuel economy. Save a bundle because of Amazon!" Read more

    "...Truck runs much more smoother and consumes less gas. Very happy customer !..." Read more

    "...Perfect fit and WOW, talk about more power and gas mileage gain...." Read more

    21 customers mention11 positive10 negative

    Customers are mixed about the quality of the electronic sensor. Some mention it's a good product, while others say it'll cause error codes.

    "Its a OEM replacement, got change by my self, really good quality part got my car up and running great." Read more

    "Many cheap sensors out there. Dont be me and try one,threw my car into a fit. And you assume its not the new part. Use OEM parts...." Read more

    "I am very pleased with the denso sensors...." Read more

    "...a driver side head gasket defect that causes a coolant leak and fouls the O2 sensor...." Read more

    4 customers mention0 positive4 negative

    Customers are dissatisfied with the connector of the electronic sensor. They mention that it was different, the electrical connector was not compatible with their vehicle, and the wires were shorter than expected.

    "The electrical connector was not compatible with my vehicle in spite of the match on the website...." Read more

    "...Received O2 sensor with shorter wires, so it would not reach electrical connector. This is for a Bank 2 Sensor 2 downstream 02 sensor." Read more

    "Said it was a match for my Rav4. Connector was different. I had to cut the old one off the bad sensor an splice it on the new one...." Read more

    "...sensor pictured and terminals were different so they could not be swapped to old connectorI received denso #234-4012" Read more

    Don’t work well
    1 Star
    Don’t work well
    This one is a replacement part from oem sensor, after 30 minutes of the installation lights when back on my cluster, tech from Toyota advised me to get a original Toyota sensor to avoid this issue
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    Top reviews from the United States

    Reviewed in the United States on March 11, 2024
    Reviewed in the United States on July 28, 2022
    One person found this helpful
    Report
    Reviewed in the United States on December 16, 2023
    Reviewed in the United States on November 6, 2016
    33 people found this helpful
    Report
    Reviewed in the United States on August 20, 2023
    One person found this helpful
    Report
    Reviewed in the United States on December 8, 2023
    Reviewed in the United States on March 10, 2024
    Customer image
    1.0 out of 5 stars Don’t work well
    Reviewed in the United States on March 10, 2024
    This one is a replacement part from oem sensor, after 30 minutes of the installation lights when back on my cluster, tech from Toyota advised me to get a original Toyota sensor to avoid this issue
    Images in this review
    Customer image
    Customer image
    Reviewed in the United States on December 26, 2022
    2 people found this helpful
    Report

    Top reviews from other countries

    Amazon Customer
    5.0 out of 5 stars Good quality O2 sensor for 05 Tacoma ( P0420/30 codes )
    Reviewed in Canada on November 20, 2023
    MagnoL
    5.0 out of 5 stars Fits perfect
    Reviewed in Canada on October 27, 2023
    Tyler
    5.0 out of 5 stars 2003 V8 4Runner
    Reviewed in Canada on December 23, 2021
    One person found this helpful
    Report
    MR T
    4.0 out of 5 stars Sencer
    Reviewed in Canada on November 8, 2023
    Mark I.
    5.0 out of 5 stars Great product
    Reviewed in Canada on April 23, 2023