Oxygen Sensor - Direct Fit
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Denso Oxygen Sensor - Direct Fit

Part No. 234-4012 Warranty Details  

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Designed to meet the increasing demands of today's engines. Each of our oxygen sensors is constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each Denso sensor.
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Connector Gender:Male
Connector Type:Direct fit
Heated:Yes
Length:15.35 in
Overall Length:16.54 in
Thread Size:M18 mm
Wire Harness Length:12.66 in
Wire Quantity:4

REVIEW SNAPSHOT®

by PowerReviews
DensoOxygen Sensor - Direct Fit
 
4.9

(based on 11 reviews)

Ratings Distribution

  • 5 Stars

     

    (10)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (7)
  • Durable (3)

Cons

No Cons

Best Uses

  • Trucks (3)
    • Reviewer Profile:
    • Casual driver (5)
    • Was this a gift?:
    • No (10)

Reviewed by 11 customers

Displaying reviews 1-10

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5.0

Nice fit, works great

By 

from Sprakers, NY

About Me Genuine Wrench Bender, Mechanic

Verified Buyer

Pros

  • Easy To Use
  • Plug And Play

Cons

    Best Uses

    • Saving Money Over Oem

    Comments about Denso Oxygen Sensor - Direct Fit:

    Quality looking pieces, threaded right in easily, connectors plugged in smooth and tight, couldn't have been any easier.

    Comment on this reviewHelp Icon

     
    5.0

    Fit perfectly

    By 

    from Virginia

    Verified Buyer

    Comments about Denso Oxygen Sensor - Direct Fit:

    Nice that it had anti-seize lube included

    • Was this a gift?:
    • No

    Comment on this reviewHelp Icon

     
    5.0

    Works

    By 

    from Acworth, GA

    See all my reviews

    Verified Buyer
    3 or more reviews submitted

    Comments about Denso Oxygen Sensor - Direct Fit:

    Neighbor installed part. This cleared code and truck runs good.

    • Was this a gift?:
    • No

    Comment on this reviewHelp Icon

    (1 of 1 customers found this review helpful)

     
    5.0

    Easy install, works perfectly

    By 

    from Lorton VA

    About Me Casual Driver

    Pros

    • Easy To Use

    Cons

      Best Uses

      • Large Cars

      Comments about Denso Oxygen Sensor - Direct Fit:

      I own a 1996 Buick Riviera and a "0171" code kept tripping the check engine light on. Did a little research in the service manual and it came up with several possible problems. First one was vacuume hoses, so I replaced all vacuume hoses, still got the same code. So I tried the second suggestion which was the forward O2 sensor. No more check engine light. I just got back from a 500 mile trip and still no check engine light. So I would say it works perfectly.

      • Was this a gift?:
      • No

      Comment on this reviewHelp Icon

      (1 of 1 customers found this review helpful)

       
      5.0

      Perfect fit and works well.

      By 

      from Plaistow, NH

      About Me Casual Driver

      Verified Buyer

      Pros

      • Easy To Use

      Cons

        Best Uses

          Comments about Denso Oxygen Sensor - Direct Fit:

          I used this for my S10 Blazer and it was easy to install. It works well so far and I hope it will stay that way.

          • Was this a gift?:
          • No

          Comment on this reviewHelp Icon

          (0 of 2 customers found this review helpful)

           
          5.0

          easy replacement

          By 

          from Birmingham, Al.

          About Me Truck Enthusiast

          See all my reviews

          Ask me a question

          Verified Buyer
          3 or more reviews submitted

          Pros

          • Durable
          • Easy Swap Out
          • Easy To Use

          Cons

            Best Uses

            • Trucks

            Comments about Denso Oxygen Sensor - Direct Fit:

            At best I'm just a good parts changer and this was an easy job. Even with 1 of my old sensors not wanting to come out this took less than 1 hour.

            • Was this a gift?:
            • No

            Comment on this reviewHelp Icon

            (1 of 2 customers found this review helpful)

             
            4.0

            Great product that makes a difference!!!

            By 

            from Roanoke, VA

            About Me Casual Driver

            Verified Buyer

            Pros

            • Durable
            • High-Performance

            Cons

              Best Uses

                Comments about Denso Oxygen Sensor - Direct Fit:

                It is a grave misconception that o2 sensors are unnecessary! For years my check engine has been on due to a faulty o2 sensor. I didn't think that it made a difference in anything until i replaced it. My cars overall performance improved totally. The sluggishness that was there was gone and he gas mileage increased. Please don't listen to the rumor that simply replacing an o2 sensor doesn't make a difference. I would have saved hundreds in gas had I replaced mine years ago!!!

                • Was this a gift?:
                • No

                Comment on this reviewHelp Icon

                 
                5.0

                exact fit

                By 

                from Griffin GA

                About Me ASE Master Tech

                See all my reviews

                Verified Buyer
                3 or more reviews submitted

                Pros

                • Easy To Use

                Cons

                  Best Uses

                  • All aps

                  Comments about Denso Oxygen Sensor - Direct Fit:

                  Great OEM Fit

                  • Was this a gift?:
                  • No

                  Comment on this reviewHelp Icon

                  (2 of 2 customers found this review helpful)

                   
                  5.0

                  Different looking than original O2 senso

                  By 

                  from Wyandotte, Mich

                  About Me Casual Driver

                  See all my reviews

                  Verified Buyer
                  3 or more reviews submitted

                  Pros

                  • Fits well

                  Cons

                  • None

                  Best Uses

                  • Large Cars
                  • Small Cars
                  • Trucks

                  Comments about Denso Oxygen Sensor - Direct Fit:

                  Appearence is different than original. fits great. I would suggest Heating the flange that holds the 02 sensor with map gas and a plumbers soldering torch. Do not heat the sensor just the flange that holds the sensor. This will speed up removal of the original sensor and save you time and grief

                  • Was this a gift?:
                  • No

                  Comment on this reviewHelp Icon

                   
                  5.0

                  excellent

                  By 

                  from Covington, Tn

                  About Me Casual Driver

                  Verified Buyer

                  Pros

                  • Durable
                  • Easy To Use
                  • High-Performance
                  • Lightweight
                  • Versatile

                  Cons

                    Best Uses

                      Comments about Denso Oxygen Sensor - Direct Fit:

                      great service

                      • Was this a gift?:
                      • No

                      Comment on this reviewHelp Icon

                      Displaying reviews 1-10

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                      Do you have questions about this product?

                       

                      Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                      6 Questions | 8 Answers
                      Displaying questions 1-6
                      • Q:

                        I have a 420 code. Which sensor should I replace?
                        Asked on 9/17/2016 by j

                        1 answer

                        • CUSTOMER CARE

                          A:

                          I'm happy to help, J! You need to inspect the downstream heated oxygen sensor (HO2S) and replace if necessary. Please provide us with the details of your application (including the year, make and model) and I will be happy to provide you with the correct sensor that can be used if available.

                          Answered on 9/19/2016 by Solomon from AAP
                      • Q:

                        i need a upstream 02 sensor for my 99 blazer ! does Advance sell both Denso upstream and downstream 02 sensors ?
                        Asked on 5/14/2016 by lloyd from waynesburg, pa.

                        1 answer

                        • CUSTOMER CARE

                          A:

                          I'm happy to help, Lloyd! We do offer the Denso Oxygen Sensor - Part No. 234-4012 for your 1999 Chevrolet Blazer, which fit as both upstream and downstream sensors for your vehicle.

                          Answered on 5/16/2016 by Solomon from AAP
                      • Q:

                        hello, are all 02 sensors the same on my 96 s10 truck w/V6 and just differ in location? i have an after cat code (P0143)
                        Asked on 3/12/2016 by joe from fortson, ga

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Joe, happy to help you! The oxygen sensor's location will be identified by position (sensor 1, sensor 2 or sensor 3), and by cylinder bank (bank 1 or bank 2). If a V6, V8 or V10 engine has dual exhausts with dual converters, the downstream O2 sensors would be labeled Bank 1, Sensor 2 and Bank 2, Sensor 2. Or, the downstream oxygen sensor might be labeled Bank 1 Sensor 3 if the engine has two upstream oxygen sensors in the exhaust manifold. The Denso Oxygen Sensor - Direct Fit (Part No. 234-4012) is an exact fit for your 1996 Chevrolet S10 with V6 engine. Please enter your vehicle on our website and search for this part to check the fitment.

                          Answered on 3/14/2016 by Steve from AAP
                      • Q:

                        I have three oxygen sensors on my truck, is there a way of testing them to find the bad one?
                        Asked on 4/27/2014 by Les from Grand Rapids, Michigan

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Les, glad to assist you! Start by visually inspecting the wires leading to and from the oxygen Sensor. Ensure that the wires are properly routed away from the exhaust components and that the wires are not damaged. Next, start the car and let it run until the vehicle is warm, which usually takes about five minutes. The oxygen sensors must be about 600 degrees Fahrenheit to provide an accurate reading. This will cause the engine to become very hot, so be careful. Connect the backprobe to the oxygen sensor's signal wire. Be very careful when using the backprobe, because the plastic connectors are often very brittle and can break easily. Connect the positive lead from the digital voltmeter to the backprobe. Connect the negative lead from the digital voltmeter to a good solid ground point on the chassis of the vehicle. Turn the voltmeter on and set it to the 1 volt scale. The voltage of the oxygen Sensor will fluctuate between 100 and 1,000 millivolts, which is 0.1 and 1.0 volts, so having a quality volt meter is important. Turn the vehicle back on and check the reading on the voltmeter. The reading should fluctuate rapidly. If the reading stays at around 0.5 volts, ensure that the vehicle is fully warmed up. If the vehicle is warm and the oxygen Sensor reading does not change, then there is a problem with the oxygen Sensor and you can stop the test. Next, create a vacuum leak to ensure that the oxygen sensor responds properly to a lean air-fuel mixture. Most vehicles have a vacuum port on the top of the engine, which can be opened up to create a vacuum leak. Creating a vacuum leak should cause the voltage of the oxygen Sensor to drop below .1 volts and then rise above .5 volts when the leak is subsequently plugged. If your vehicle does not have a vacuum port or if creating a vacuum leak causes the vehicle to stall, you can preform a propane enrichment test. This is done by adding some propane gas to the air intake, which should cause the voltage of the oxygen Sensor to quickly rise. As an alternative to a propane enrichment test, you can also slightly close the choke, which should cause the voltage of the oxygen Sensor to quickly rise. If during steps 8 to 10 the voltage does not change or does not change in the expected manner, then the oxygen sensor is bad and should be replaced.

                          Answered on 4/29/2014 by Steve from AAP
                      • Q:

                        I was told that bank 1 on my 02 sensor was bad, which side is bank 1, Passenger side or drivers side???
                        Asked on 12/16/2012 by Jan from pompano bch, fl

                        3 answers

                        • CUSTOMER CARE

                          A:

                          For assisting you further with this Denso Oxygen Sensor Direct Fit - part# 234-4012, please provide the year, make, model and engine size of the vehicle. You may also visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you.

                          Answered on 12/16/2012 by Vincent from AAP
                        • A:

                          bank one is the driver's side. bank two is the passenger's side.

                          Answered on 9/20/2013 by gogotipps the sidejob man from frederick, md.
                        • A:

                          bank one is the driver's side. bank two is the passenger's side.

                          Answered on 9/20/2013 by gogotipps the sidejob man from frederick, md.
                      • Q:

                        Are these sold as upstream and downstream sensors for the same price?
                        Asked on 11/26/2011 by Anonymous

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The mounting location of this oxygen sensor should be before catalytic converter.
                          For compatibility, please provide your vehicle make, model and engine specification.

                          Answered on 11/27/2011 by Aaron from AAP
                      Displaying questions 1-6

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