Knock Sensor
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Knock Sensor Knock Sensor
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BWD Knock Sensor

Part No. S8696 Warranty Details  

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CARQUEST by BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Our knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditions
  • The Piezoelectric disc, which is the heart of the sensor, is made out of sintered ferroelectric ceramic material and precision grounded to tight physical tolerance with screen printed silver electrodes on the faces of the disc to enhance the spurious resp
  • High Strength and Glass Transition Temperature epoxy resin assures that the sensor element, epoxy, and flex zone remain as one solid member to maintain the proper frequency response while eliminating the likelihood of spurious responses (glitches).
  • The connector body is double sealed, with the o-ring seal to provide a hermetic seal for the internal components while a foam seal in the connector area provides a first line of protection, still allowing the housing to flex and achieve the optimal sensor
  • The body is roll formed first then anvil staked to provide maximum anti rotation protection. Under the anvil stakes are die formed ridges in the hex cover to further protect against rotation.
  • Manufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
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Connector Gender:No Connector
Mounting Type:Screw-in
Terminal Gender:Male (1)
Terminal Quantity:1

REVIEW SNAPSHOT®

by PowerReviews
CARQUEST by BWDKnock Sensor
 
3.6

(based on 15 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (4)

79%

of respondents would recommend this to a friend.

Pros

  • Easy to use (8)
  • Durable (5)
  • Lightweight (4)

Cons

  • Incompatible (3)

Best Uses

  • Trucks (8)
    • Reviewer Profile:
    • Mechanic (8), Truck enthusiast (8), Auto enthusiast (5)
    • Was this a gift?:
    • No (13)

Most Liked Positive Review

 

Clean dry area where it goes

Hello make sure who is doing the work clean and dry area where they goes. A water area will short it out and give low volts low watts code. Make sure get intake gasket...Read complete review

Hello make sure who is doing the work clean and dry area where they goes. A water area will short it out and give low volts low watts code. Make sure get intake gasket kit and Dorman - OE Solutions Knock (Detonation) Sensor Harness Part No. 917-033 due to water maybe in the old harness. Will casuing code again after changing Knock senors I still had code til I change harness. Code came up after driving 50 to 100 miles. Now change Dorman - OE Solutions Knock (Detonation) Sensor Harness Part No. 917-033 code is gone never came back.

VS

Most Liked Negative Review

 

Use OEM AC/Delco from Advance instead

Got check engine like and bad knock sensor code on 2004 5.3 Chevy 1500 Silverodo @ 125k miles. Pulled intake manifold, not an easy job and found the rear knock sensor very corroded and...Read complete review

Got check engine like and bad knock sensor code on 2004 5.3 Chevy 1500 Silverodo @ 125k miles. Pulled intake manifold, not an easy job and found the rear knock sensor very corroded and felt sure this was cause. Replaced both sensors and wiring harness and upgrade gaskets as not wanting to go back in to replace. Then within 50 miles got same code. Checked with a repair shop and was told that anything but the GM part can give you fits. Advance let me return the BWD sensors and pay diff for the AC/Delco sensors. Replaced about 200 miles ago and no check engine light. Wish I had use AC/Delco the first time and not had to redo the job. Also suggest using rtv around the rubber covers on the harness. Youtube has several videos on replacing sensors and was very helpful. Was quoted $600-700 to do this job at repair shop.

Reviewed by 15 customers

Displaying reviews 1-10

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1.0

I would Never buy these ever ever again.

By 

from Longmont ,CO

Verified Buyer

Comments about CARQUEST by BWD Knock Sensor:

I was warned Only use AC-Delco knock sensors, but Advance auto told me these were the Same specs and plant that makes AC-delco.( code po332bank 2) was on. Being on a fixed income the parts was all i could barrow on my Visa.( New wiring harness new sensors & gaskets) , Labor took me a day being disabled,+ day cleaning up under hood. All this to pass Emissions for tags. Battery off for that time erased the computer brain, then emissions could not read it(Nothing Ready), need to do whats called Drive Cycles, another nail in road. 3xs to emissions 50 miles and now check engine light back on (code po327) now bank 1.
I Saved about 400.00 in labor i did, all for nothing. now i have to do it all over. All Advance Auto can do is re-fund parts,Not any Labor,
No Tags till i do it again.
I am beyond words.

  • Was this a gift?:
  • No
 
5.0

Knock Sensor - 2000 Silverado, 5.3 ltr

By 

from Maiden,NC

About Me Mechanic

Verified Buyer

Comments about CARQUEST by BWD Knock Sensor:

replaced both knock sensors and they functioned within expected parameters. Resulting in the elimination of the Check Engine condition.

  • Was this a gift?:
  • No
 
4.0

Seems to work well

By 

from North FL

About Me Auto Enthusiast, Mechanic, Truck Enthusiast

Pros

  • Correct My Problem

Cons

    Best Uses

    • Trucks

    Comments about CARQUEST by BWD Knock Sensor:

    I bought two of these to replace the ones my 05 Silverado came with. There is a factory defect that allows water to enter the where the rear knock sensor mounts, causes a big issue. So far so good, no code, and is running great.

    • Was this a gift?:
    • No
     
    1.0

    learn from my mistake do the job once buy acdelco first

    By 

    from york, PA

    About Me Auto Enthusiast, Mechanic, Truck Enthusiast

    See all my reviews

    Ask me a question

    3 or more reviews submitted

    Pros

      Cons

      • Gave Incorrect Voltage
      • Incompatible

      Best Uses

        Comments about CARQUEST by BWD Knock Sensor:

        unfortunately for me this product didnt not work. before I replaced the sensors I had a code for just the rear knock sensor. I replaced both the front and rear sensors and now they both are tripping the low voltage output code. I would highly recommend going with acdelco parts for the knock sensor the wiring harness and the intake manifold gasket (GM made an updated intake gasket) to prevent any additional problems or having to do the job twice like I did

        • Was this a gift?:
        • No

        (9 of 14 customers found this review helpful)

         
        5.0

        Clean dry area where it goes

        By 

        from Johnsonburg, PA 15854

        About Me Casual Driver, Mechanic, Truck Enthusiast

        See all my reviews

        Ask me a question

        3 or more reviews submitted

        Pros

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

        Cons

          Best Uses

          • Hd Trucks
          • Trucks

          Comments about CARQUEST by BWD Knock Sensor:

          Hello make sure who is doing the work clean and dry area where they goes. A water area will short it out and give low volts low watts code. Make sure get intake gasket kit and Dorman - OE Solutions Knock (Detonation) Sensor Harness Part No. 917-033 due to water maybe in the old harness. Will casuing code again after changing Knock senors I still had code til I change harness. Code came up after driving 50 to 100 miles. Now change Dorman - OE Solutions Knock (Detonation) Sensor Harness Part No. 917-033 code is gone never came back.

          • Was this a gift?:
          • No

          (6 of 10 customers found this review helpful)

           
          5.0

          Works great

          By 

          from jacksonville, fl

          About Me Auto Enthusiast, Mechanic, Truck Enthusiast

          See all my reviews

          Ask me a question

          3 or more reviews submitted

          Pros

          • Durable
          • Easy To Use
          • Lightweight

          Cons

            Best Uses

            • Large Cars
            • Small Cars
            • Trucks

            Comments about CARQUEST by BWD Knock Sensor:

            Replaced both mine on my 02 avalanche 5.3L. Did both sensors,gasket,and wiring harness at the same time. Took me about 3 hours start to finish, not to difficult if you have a decent grasp on how to fix vehicles. These sensors work great, I see reviews saying they are junk but I can almost promise there is something they either did wrong oar something they broke. That have good weight to them and are good quality. Do not drop these on the a hard surface, if you do they will go bad. Make sure you clean the surface of the engine block and the holes the knock sensors fit into to ensure proper fit for the manifold gasket.

            • Was this a gift?:
            • No

            (6 of 11 customers found this review helpful)

             
            1.0

            Use if you want to do this job twice...

            By 

            from Houston, Texas

            About Me Auto Enthusiast, Do it Yourselfer, MECHANICALLY INCLINED

            Pros

              Cons

              • Incompatible

              Best Uses

                Comments about CARQUEST by BWD Knock Sensor:

                As PowerReviews said: Chevys may not like these knock sensors.
                __________________________________________________

                2003 Chevy Tahoe

                Check engine light came on (knock sensor, bank 1). Replaced both sensors and wiring harness. 50 miles later check engine light came on again (knock sensor, bank 2). Advance Auto cleared the code twice but it kept coming back on within 50 miles. Luckily I bought the expensive Fel-Pro gaskets. They're built to last and can be re-used. Swapped for AC Delco. 250+ miles so far and no issues.

                • Was this a gift?:
                • No

                (5 of 9 customers found this review helpful)

                 
                1.0

                Use OEM AC/Delco from Advance instead

                By 

                from Nantahala Gorge

                About Me Auto Enthusiast

                See all my reviews

                Ask me a question

                Helpful Reviewer

                Pros

                  Cons

                  • Incompatible

                  Best Uses

                    Comments about CARQUEST by BWD Knock Sensor:

                    Got check engine like and bad knock sensor code on 2004 5.3 Chevy 1500 Silverodo @ 125k miles. Pulled intake manifold, not an easy job and found the rear knock sensor very corroded and felt sure this was cause. Replaced both sensors and wiring harness and upgrade gaskets as not wanting to go back in to replace. Then within 50 miles got same code. Checked with a repair shop and was told that anything but the GM part can give you fits. Advance let me return the BWD sensors and pay diff for the AC/Delco sensors. Replaced about 200 miles ago and no check engine light. Wish I had use AC/Delco the first time and not had to redo the job. Also suggest using rtv around the rubber covers on the harness. Youtube has several videos on replacing sensors and was very helpful. Was quoted $600-700 to do this job at repair shop.

                    • Was this a gift?:
                    • No

                    (14 of 28 customers found this review helpful)

                     
                    4.0

                    Works

                    By 

                    from Nashville Tn

                    About Me Mechanic

                    See all my reviews

                    Verified Buyer
                    Helpful Reviewer

                    Pros

                    • Durable
                    • Easy To Use

                    Cons

                      Best Uses

                      • Trucks

                      Comments about CARQUEST by BWD Knock Sensor:

                      Good Idea to get the wiring harness too Your old one will break.

                      • Was this a gift?:
                      • No

                      (14 of 27 customers found this review helpful)

                       
                      4.0

                      Saved lots of money installing it myself

                      By 

                      from South Jersey

                      About Me Mechanic, Truck Enthusiast

                      See all my reviews

                      Ask me a question

                      Helpful Reviewer

                      Comments about CARQUEST by BWD Knock Sensor:

                      Check engine light came on. Two codes indicated the knock sensors were bad. A few codes indicated there was a problem with catalytic converter efficiency. I knew this was a hard job. I bought the better set of intake manifold gaskets for $79 at Advance. Job was about 3 hours. There was a lot of crud in the knock sensor location. I cleaned the grime out and installed the new sensors. I used the original wiring harness although many people recommend changing them. I used a voltmeter to verify the original cable had continuity. I took the alternator off to make room. After reassembling everything my Silverado ran great. Better economy and acceleration. So these knock sensors were the problem. I cleared the check engine light with a scanner and it hasn't come back on after 200 miles so this fixed my problem.

                      • Was this a gift?:
                      • No

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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.

                      25 Questions | 30 Answers
                      Displaying questions 1-10Previous | Next »
                      • Q:

                        who exactly is responding to these questions? Where are you getting your references from exactly? Just curious to understand the information and ensure its quality. thanks
                        Asked on 6/8/2013 by jen

                        1 answer

                        • CUSTOMER CARE

                          A:

                          We are in-house experts with experience in automobile industry. We get most of the information from owner manuals, forums/threads, manufacturer websites etc.,. Sometimes we also get some technical information from our own customers who had used the products. If at all there is a major issue we will always request the customer to check with a certified mechanic for a proper diagnosis. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                          Answered on 6/10/2013 by John the Car-Doc from AAP
                      • Q:

                        how long can you run truck while knocki sencor is bad?
                        Asked on 5/7/2013 by jess

                        1 answer

                        • CUSTOMER CARE

                          A:

                          With reference to your inquiry on this BWD Ignition Knock (Detonation) Sensor (Part No. S8696), the Knock Sensor retards the engine timing when there is a knock or ping detected. This will make the car a little sluggish. It is rare that the knock sensor goes bad. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                          Answered on 5/7/2013 by Max from AAP
                      • Q:

                        Are these knock sensors sold as a pair, or seperately?
                        Asked on 3/13/2013 by Phil

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The BWD Sensor - Knock (Detonation) (Part No. S8696) is sold individually. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                          Answered on 3/13/2013 by Steve from AAP
                      • Q:

                        Where are the knock sensors located on a 2006 Chevrolet Silverado 1500 4.8l engine?
                        Asked on 1/21/2013 by MaddMike from Ontario, CA

                        1 answer

                        • CUSTOMER CARE

                          A:

                          With reference to your query on BWD Sensor - Knock (Detonation) - Part No. S8696, The knock sensors are under the intake manifold of your 2006 Chevrolet Silverado 1500 4.8 L. The intake has to come off to get to them. For any further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and our representatives would be more than happy to assist you.

                          Answered on 1/21/2013 by Max from AAP
                      • Q:

                        Where is the knock sensor located on an 2004 Chev Silverado 4X4?
                        Asked on 6/16/2012 by Anonymous

                        2 answers

                        • CUSTOMER CARE

                          A:

                          To help you in a better manner, if you could please include the year, make, model, sub-model and engine specification of the vehicle and we would be better able to assist you.

                          Answered on 6/18/2012 by Aaron from AAP
                        • A:

                          they are in the valley under the intake manifold.you will need 2 knock sensors 1 harness and intake gaskets be carful the intake is a pain to get back in place cheap trick unplug your injectors and you can remove everything with intake insted of removing 1 by 1

                          Answered on 1/30/2015 by master mechanic from clermont fl
                      • Q:

                        loatiion of knock sensor on 2005 chevy express 6.0 liter is it under intake manifold? thanks
                        Asked on 6/5/2012 by Anonymous from ct.

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The 2005 Chevy Express 6.0l has two knock sensors. They should be located in the cover of the engine valley under the intake manifold. You need to remove that to get at them.

                          Answered on 6/6/2012 by Vincent from AAP
                      • Q:

                        i have a 99 gmc 1500 lse serria 5.3 motor wear is the knock senor located
                        Asked on 5/27/2012 by mike z from newportrichey fl

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The knock sensor on your Gmc sierra 1500 5.3 sle should be located on the intake manifold.

                          Answered on 5/28/2012 by Vincent from AAP
                      • Q:

                        where do i put this at in my truck because i cant find where it goes..
                        Asked on 5/20/2012 by katie from smithfield nc

                        1 answer

                        • CUSTOMER CARE

                          A:

                          To help you in a better manner, if you could please include the year, make, model and engine specification of the vehicle and we would be better able to assist you.

                          Answered on 5/20/2012 by Aaron from AAP
                      • Q:

                        hi where is the knock sensor in gmc yukon 2002
                        Asked on 3/26/2012 by jlop63 from nc

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The knock sensor is located under the intake manifold mounted on the cam cover in your 2002 GMC Yukon.

                          Answered on 3/26/2012 by Dennis from AAP
                      • Q:

                        hey where is the knock sensor on a 2005 chevy z71?
                        Asked on 12/5/2011 by Anonymous

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.

                          Answered on 12/6/2011 by DIY Daniel from AAP
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