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Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor

4.4 4.4 out of 5 stars 458 ratings

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Purchase options and add-ons

Brand Denso
Material Zirconium
Item Weight 0.01 Ounces
Style Modern
Mounting Type Flange Mount

About this item

  • Manufactured to detect the amount of exhaust gas air fuel ratio.Material:Zirconium
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate; Thread Diameter: 18mm
  • Easy installation
See more product details

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$106.60
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$48.05
Get it as soon as Sunday, Mar 17
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Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor
Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor
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Price-43% $106.60
List:$185.71
$68.35$39.99$39.99-26% $45.18
List:$61.10
-27% $48.05
List:$65.85
Delivery
Get it as soon as Monday, Mar 18
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Customer Ratings
Easy to install
4.4
4.1
4.6
4.6
Value for money
4.3
3.5
4.5
4.6
Mileage
4.3
3.5
4.9
4.4
Sold By
Amazon.com
Amazon.com
DrCax Store
lzskautoparts
Amazon.com
Amazon.com
specific uses
Oxygen Sensor
Time
Oxygen Sensor
Oxygen Sensor
Oxygen Sensor
material
Zirconium
Zirconium
Zirconium
mounting type
Flange Mount
Flange Mount
Flange Mount
Threaded
Flange Mount
style
Modern
Modern
Modern
Modern
Modern
Modern
weight
0.01 ounces
0.25 pounds
0.11 kilograms

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.

Important information

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Top Brand: Denso

Highly Rated
4.5/5 star rating from 100K+ customer ratings
Trending
50K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

From the manufacturer

About us

DENSO is a global company focused on advanced mobility that positively changes how the world moves and contributes to greater well-being. As a global Fortune 500 company, we have a broad product portfolio and widespread global impact. We are focused on the development of core technologies in four fields to create new value and influence the future of mobility. DENSO's network spans across 35 countries and regions allowing us to share diverse perspectives and opinions to deliver global and regional solutions to meet societal needs.The DENSO brand is built on delivering more Quality and Reliability. Whether supplying the world’s automakers with reliable OE parts, or developing aftermarket, DENSO’s line of products are built to deliver superior all-around performance every day. At DENSO we’ve taken everything we have learned as an OE manufacturer and applied it to our aftermarket product lines. Every component that leaves our factories has been designed with precision, manufactured to OE standards. At DENSO, we’re constantly striving to break new ground with innovative solutions for today’s demanding automotive needs. All of our products are built to OE-standards and incorporate the upgrades — an OE manufacturer can make. DENSO First Time Fit products are manufactured to give you the right part and the right fit … the first time, every time.

Product Description

Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor


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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
    458 global ratings

    Customers say

    Customers like the value, fit, performance, response, and ease of installation of the electronic sensor. They mention that it runs better than ever, has excellent compatibility with Toyota, and is easy to install. Customers are also satisfied with the quality.

    AI-generated from the text of customer reviews

    28 customers mention23 positive5 negative

    Customers like the performance of the electronic sensor. They say it works great, runs better than ever, and has no issues. Some customers are even shocked at the performance gain.

    "its fits perfectly and working as expected. No errors anymore. Thank you." Read more

    "...and replaced the one after the cat and wouldn't ya know..... Runs better than ever...." Read more

    "I love the sensor works great. Will recommend" Read more

    "...Not only was I right in my assumption, I was shocked at the performance gain...." Read more

    25 customers mention25 positive0 negative

    Customers appreciate the value of the electronic sensor. They mention that it has a great price and is a good product.

    "...Glad to get OEM quality parts at an affordable price." Read more

    "Love the price, saved $80.00 compared to a local parts store. Does the job, cleared the code and all is good." Read more

    "...Of course, I found it here for a decent price. It works exactly like it's supposed to work." Read more

    "Price was good and no problem installing" Read more

    24 customers mention20 positive4 negative

    Customers generally like the quality of the electronic sensor. They mention that it's a great OEM part and a good replacement.

    "...It also looks to be good OEM-like quality. I've put 500-600 miles on since the replacement and haven't had any issues...." Read more

    "Denso quality is very important as this sensor determines and sets the correct fuel mixture , Your records will indicate that two attempts have..." Read more

    "Great replacement" Read more

    "...Great part!" Read more

    17 customers mention15 positive2 negative

    Customers like the fit of the electronic sensor. They say it fits perfectly and works flawlessly on their 2007 Lexus GS350. Some customers also mention that it has excellent compatibility with their Toyota and that all mechanics they have talked to recommend it.

    "its fits perfectly and working as expected. No errors anymore. Thank you." Read more

    "Excellent compatibility with Toyota. All mechanics I talked to recommended" Read more

    "Perfect fit and accuracy" Read more

    "Denso all the way, this is the same as Toyota Lexus OEM. Fit perfect and worked flawless on 2007 Lexus GS350...." Read more

    14 customers mention14 positive0 negative

    Customers find the installation process of the electronic sensor to be relatively easy. They mention that it works as expected and is easy to program. Some customers are also happy with the purchase and the quick service provided by Amazon.

    "...due to the very limited space in the engine bay, but the install was relatively easy...." Read more

    "...Not very easy but not that hard to install. Might have to stand on your head. Used a 13/16 box end wrench to get off the old 1. Same to install...." Read more

    "Easy install" Read more

    "...This was one of the easiest fixes. Difficulty level is Zero!..." Read more

    4 customers mention4 positive0 negative

    Customers are satisfied with the response of the electronic sensor. They mention that it runs quieter, runs smoother, and delivers the right performance.

    "...It runs quieter and with good response...." Read more

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

    "...They really woke my truck back up it runs a lot smoother and i gained a half of a mile per gallon back." Read more

    "Works as advertised. The engine delivers the right performance based on the behavior of the sensors. No surprises here, just use it." Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the delivery of the electronic sensor. They mention that it is fast and the best brand for Toyota.

    "Fast shipping and best brand for toyota" Read more

    "Great product, fast delivery, buy these. do not buy aftermarket other than denso." Read more

    "Product was as advertised.. fast shipping." Read more

    High Quality Part!
    5 Stars
    High Quality Part!
    Installed this sensor on my 2007 Toyota Sequoia. It was throwing a P0051 code for Bank 2 sensor 1. Swapped it out with this OEM Denso sensor, and the code has been gone ever since. Fuel trimming as read from my scan tool is extremely tight, and the 4.7 is running good as new at 241k miles. Great part!
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    Top reviews from the United States

    Reviewed in the United States on February 17, 2024
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    2 people found this helpful
    Report
    Reviewed in the United States on December 15, 2023
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    Reviewed in the United States on August 1, 2022
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    Top reviews from other countries

    Linh N.
    5.0 out of 5 stars Looks legit and works
    Reviewed in Canada on July 5, 2023
    Customer image
    Linh N.
    5.0 out of 5 stars Looks legit and works
    Reviewed in Canada on July 5, 2023
    Driver side upstream sensor went bad on my 07 gx470 so I managed to track down the part number and narrowed it down to this OEM part. Dealership wanted over $400 CAD for the part so there's massive savings to be had. Part came in a legit looking box and anti-seize pre applied. Car runs with no issues now so I highly recommend it!
    Images in this review
    Customer image
    Customer image
    angus
    5.0 out of 5 stars Works great
    Reviewed in Canada on May 15, 2022
    Paul Difant
    5.0 out of 5 stars DENSO oxygen sensor
    Reviewed in Canada on January 25, 2023
    LOW ORBIT
    5.0 out of 5 stars Genuine Denso part!!!
    Reviewed in Canada on June 21, 2023
    Customer image
    LOW ORBIT
    5.0 out of 5 stars Genuine Denso part!!!
    Reviewed in Canada on June 21, 2023
    Received the sensor today! Ordered part yesterday. Super fast shipping. It appears to be 100% genuine Denso part. Sensor identification markings are laser etched (not engraved). Buy with confidence. Appreciate all the responses I received to my posted question. You are all correct! Genuine Denso part. ✌🏻
    Images in this review
    Customer image
    Customer image
    Adam Joonase
    5.0 out of 5 stars Grand quality as always from denso
    Reviewed in Canada on October 3, 2020