V-Power Spark Plug
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V-Power Spark Plug V-Power Spark Plug
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NGK V-Power Spark Plug

Part No. 3951 Warranty  

See if this part fits a specific vehicle.

Check Vehicle Fit

V-grooved center electrode offers lower ignition system voltage, enhanced ignitability and fuel economy, lower emissions and increased anti-fouling characteristics.

Product Features:
  • 90-degree V-groove center electrode
  • Concave ground electrode
  • Design helps reduce quenching effect
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Electrode Core Material:nickel with V groove
Electrode Tip Material:nickel with V groove
Ground Strap Quantity:1
Manufacturer Heat Range:5
Resistor:Yes
Shorty Spark Plug:No
Spark Plug Reach:0.708 in
Spark Plug Seat Type:tapered
Spark Plug Thread Size:14 mm
Tip Configuration:Loose
Type:V-Power
Wrench Diameter:5/8 in

REVIEW SNAPSHOT®

by PowerReviews
NGKV-Power Spark Plug
 
4.6

(based on 31 reviews)

Ratings Distribution

  • 5 Stars

     

    (21)

  • 4 Stars

     

    (9)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

97%

of respondents would recommend this to a friend.

Pros

  • Easy to install (23)
  • Improves engine efficiency (21)
  • Increases power (19)
  • Durable (12)
  • Lightweight (4)

Cons

    Best Uses

    • Everyday driving (27)
    • Replacement (18)
    • Performance driving (7)
    • Restoration (5)
      • Car & Truck:
      • Auto enthusiast (4), Casual driver (3), Mechanic (3)
      • Reviewer Profile:
      • Casual driver (14), Auto enthusiast (13), Mechanic (5), Truck enthusiast (5), Competitive driver (3)

    Most Liked Positive Review

     

    THE plug for GM 3800's

    If you have a 3800 (GM motor), this is the plug to buy. These plugs give a smooth idle, good performance and gas mileage, and last 25,000+ miles.

    If you have a 3800 (GM motor), this is the plug to buy. These plugs give a smooth idle, good performance and gas mileage, and last 25,000+ miles.

    VS

    Most Liked Negative Review

     

    Don't go on judgement of product name

    I am using this product as a replacement for eveyday driving notice very little engine efficiency but to soon to tell at this point. The ceramic insulator was cracked on one of the plugs.

    I am using this product as a replacement for eveyday driving notice very little engine efficiency but to soon to tell at this point. The ceramic insulator was cracked on one of the plugs.

    Reviewed by 31 customers

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    Displaying reviews 1-10

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    5.0

    I would buy again

    By none

    from Dayton Ohio

    About Me Casual Driver

    Verified Buyer
    Level 2

    Pros

    • Easy To Install
    • Improves Engine Efficiency
    • Increases Power

    Cons

      Best Uses

      • Everyday Driving

      Comments about NGK V-Power Spark Plug:

      The plugs were needed. gas mileage inproved as well as power

      Comment on this review(earn points)

       
      4.0

      good bargain

      By Doug45371

      from Tipp City, OH

      About Me Auto Enthusiast

      Verified Buyer
      Level 1

      Pros

      • Improves Engine Efficiency
      • Increases Power

      Cons

        Best Uses

        • Everyday Driving

        Comments about NGK V-Power Spark Plug:

        A good product at a good price. I can feel the increased power. I will but this product again.

        Comment on this review(earn points)

         
        5.0

        Great product!

        By Pudgee

        from Chicago

        About Me Out Of Control Diy'er

        Ask me a question

        Verified Buyer
        Level 2

        Pros

        • Improves Engine Efficiency
        • Increases Power

        Cons

          Best Uses

          • Everyday Driving

          Comments about NGK V-Power Spark Plug:

          Just changed them before the -15* weather hit....barely turned the key and it was running on a cold morning!!!

          Comment on this review(earn points)

           
          5.0

          Nice plugs

          By Pete

          from Brick, NJ

          About Me Auto Enthusiast, Casual Driver, Mechanic

          Verified Buyer
          3 or more reviews submitted

          Pros

          • Easy To Install

          Cons

          • No Improvement In Performance

          Best Uses

          • Everyday Driving
          • Replacement

          Comments about NGK V-Power Spark Plug:

          Nice replacement for OE plugs.

          Comment on this review(earn points)

           
          5.0

          First set went 50,000 miles

          By Swede Speed

          from Montgomery NY

          About Me Auto Enthusiast, Competitive Driver, Truck Enthusiast

          Ask me a question

          Verified Buyer
          Level 3

          Pros

          • Durable
          • Easy To Install
          • Improves Engine Efficiency

          Cons

            Best Uses

            • Everyday Driving

            Comments about NGK V-Power Spark Plug:

            A very cost effective alternative to more expensive platinum plugs. Will buy again in 50,000 miles.

            Comment on this review(earn points)

            (1 of 2 customers found this review helpful)

             
            5.0

            decent spark plugs

            By cinn

            from clovis nm

            About Me Casual Driver, Mechanic

            Verified Buyer
            Level 1

            Pros

            • Durable
            • Easy To Install
            • Lightweight

            Cons

              Best Uses

              • Everyday Driving

              Comments about NGK V-Power Spark Plug:

              I bought these spark plugs to chase a misfire. They didn't fix the problem(wasn't the problem) but after I fixed the problem they seemed to work just fine. I've seen a slight improvement in a acceleration over my ac Delco ones. Alright came pre gapped and spark length and tread length were right for a 3800 series 2 motor. No complaints and would recommend

              Comment on this review(earn points)

              (14 of 27 customers found this review helpful)

               
              2.0

              Don't go on judgement of product name

              By Joe The Road Warrior

              from Watertown,CT

              About Me Truck Enthusiast

              Ask me a question

              Verified Buyer
              Level 3

              Pros

              • Inexpensive
              • In stock

              Cons

              • Ceramic Insulator Cracked
              • Wrong Gap

              Best Uses

              • Everyday Driving
              • Replacement

              Comments about NGK V-Power Spark Plug:

              I am using this product as a replacement for eveyday driving notice very little engine efficiency but to soon to tell at this point. The ceramic insulator was cracked on one of the plugs.

              Comment on this review(earn points)

              (17 of 34 customers found this review helpful)

               
              4.0

              would buy again

              By kban

              from Roxie, MS

              Verified Buyer
              Level 2

              Pros

              • Durable
              • Easy To Install

              Cons

                Best Uses

                • Everyday Driving
                • Replacement

                Comments about NGK V-Power Spark Plug:

                great fit

                Comment on this review(earn points)

                (16 of 36 customers found this review helpful)

                 
                4.0

                Good Value

                By Gregg

                from Bamberg,SC

                About Me Casual Driver

                Verified Buyer
                Level 2

                Pros

                • Easy To Install

                Cons

                  Best Uses

                  • Replacement
                  • Restoration

                  Comments about NGK V-Power Spark Plug:

                  Good Value

                  Comment on this review(earn points)

                  (18 of 35 customers found this review helpful)

                   
                  5.0

                  awesome spark plug

                  By Alex

                  from Lincoln, NE

                  About Me Auto Enthusiast, Competitive Driver, Mechanic, Truck Enthusiast

                  Level 2

                  Pros

                  • Easy To Install
                  • Improves Engine Efficiency
                  • Increases Power

                  Cons

                    Best Uses

                    • Everyday Driving
                    • Performance Driving
                    • Replacement
                    • Restoration

                    Comments about NGK V-Power Spark Plug:

                    I recently bought a 2000 Chevrolet Blazer and it didn't have any take off power at all. I replaced the previous ones with these NGK's and noticed a serious amount of power. I will buy these again and again.

                    Comment on this review(earn points)

                    Displaying reviews 1-10

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                    Do you have questions about this product?(earn points for answers!)

                     

                    Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

                    9 Questions | 13 Answers
                    Displaying questions 1-9
                    • Q:

                      what size socket for this spark plug
                      Asked on 10/15/2013 by blue from MARYLAND

                      2 answers

                      • A:

                        There are usually 2 sizes and you should need the smaller sized one. This special sized plug socket usually comes in a socket set.

                        Answered on 3/28/2014 by Halie Scott from Greenwood, SC
                      • CUSTOMER CARE

                        A:

                        Hi Blue, the socket wrench diameter for the NGK V-Power Spark Plug (Part No. 3951) is 5/8 inches.

                        Answered on 10/16/2013 by Steve from AAP
                    • Q:

                      want to remove last item put in cart, spark plug wrong plug
                      Asked on 8/29/2013 by bob from philadelphia,pa

                      2 answers

                      • A:

                        Go to In Cart and click on it. You will notice a list of Names of items you have added to the list. Look at this list and find the name of the plug you didn't want. Then, look right under it and you'll see DELETE PRODUCT, or ITEM, or just simply the name of the plug. Click on this button and problem solved.

                        Answered on 3/28/2014 by Halie Scotttttt from Greenwood, SC
                      • CUSTOMER CARE

                        A:

                        In order to remove the wrong part (spark plug), 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 8/29/2013 by Steve from AAP
                    • Q:

                      how many do i need and how do i install them in a 1998 oldsmobile cutlass?
                      Asked on 2/27/2013 by NAE BROWN from Houston, TX

                      1 answer

                      • CUSTOMER CARE

                        A:

                        With reference to your inquiry on the NGK V-Power Spark Plug - part# 3951, you would need six spark plugs for your Oldsmobile Cutlass. The front ones you can change by just removing the plug wires and using the proper tool. For the back plugs you have to undo the front motor mounts and pry or pull the motor forward. 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 2/28/2013 by Vincent from AAP
                    • Q:

                      pontiac aztek requiren how many spark plugs
                      Asked on 2/8/2013 by don from trenton n.j

                      2 answers

                      • A:

                        It requires 6 spark plugs for a V6. If it's a V8 you will need 8 of them. Usually it says on the side or rear of the car.

                        Answered on 3/28/2014 by Halie Scotttttt from Greenwood, SC
                      • CUSTOMER CARE

                        A:

                        With reference to your inquiry on the NGK V-Power Spark Plug - part# 3951, you would need six spark plugs for your Pontiac Aztek. 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 2/9/2013 by Vincent from AAP
                    • Q:

                      What spark plugs will fit the 2006 Ford F150XL 4.6 V8 ?
                      I need to REPLACE the three piece plugs.
                      Asked on 12/31/2012 by Bill from Jacksonville, Fl

                      1 answer

                      • CUSTOMER CARE

                        A:

                        This NGK V-Power Spark Plug (Part No. 3951) is an exact fit for your 2006 Ford F-150 XL For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

                        Answered on 1/1/2013 by Steve from AAP
                    • Q:

                      do you gap these plugs and if you do what is the gap
                      Asked on 8/3/2012 by diann from United States

                      1 answer

                      • CUSTOMER CARE

                        A:

                        Yes, this NGK V-Power Spark Plug (Part# 3951) is 1.52 mm pre-gapped. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

                        Answered on 8/4/2012 by Rick from AAP
                    • Q:

                      whats the gap size?
                      Asked on 2/22/2012 by Anonymous

                      1 answer

                      • CUSTOMER CARE

                        A:

                        Initial suggested settings for spark plug gaps are: Single plug : 0.028 - 0.032", Dual plug : 0.025 - 0.030".

                        Answered on 2/23/2012 by Vincent from AAP
                    • Q:

                      where is the spaark plugs is on the motor.
                      Asked on 12/1/2011 by Anonymous

                      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 12/2/2011 by Aaron from AAP
                    • Q:

                      Is these plugs pre-gap?
                      Asked on 9/4/2011 by Anonymous

                      2 answers

                      • A:

                        Usually now of days I don't even know if you can get them ungapped. So yes they are gaped already.

                        Answered on 3/28/2014 by Halie from Greenwood, SC
                      • CUSTOMER CARE

                        A:

                        Yes, this spark plug is 1.52 mm pre-gapped.

                        Answered on 9/5/2011 by Steve from AAP
                    Displaying questions 1-9

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