Professional Double Platinum Spark Plug
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ACDelco Professional Double Platinum Spark Plug

Part No. 41-993 Warranty  

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ACDelco is a global leader in automotive replacement parts and related services and offers quality aftermarket products for most makes and models, including General Motors, Ford, Chrysler, Toyota and Honda, plus many original equipment service replacement parts. ACDelco products can be found in more than 100 countries located on six of the seven continents and are sourced globally to meet the needs of the local markets, including "maintenance" parts commonly replaced during the lifetime of a vehicle (e.g., batteries, oil filters, air filters, wiper blades, shocks and brakes), as well as "repair" parts (e.g., alternators, radiators, chassis and heating/cooling components). ACDelco offers more than 80,000 parts across 37 product lines.

ACDelco has over 100 years of experience in the automotive industry and is a brand of GM Customer Care and Aftersales, a division of General Motors. ACDelco employs a two- or three-tiered distribution model, utilizing a network of appointed wholesale distributors to service independent installers, ACDelco independent service centers, retail and fleet customers.

Product Features:

  • The kind of firepower you expect from ACDelco. The spark plug is what started it all for us, and with over 100 years of innovation behind each spark plug, you know they're going to be great. From the old to the new and even the non-automotive, ACDelco has a spark plug to fit just about whatever your need may be.
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Electrode Core Material:Copper
Electrode Tip Material:Platinum
Resistor:Yes
Spark Plug Seat Type:Tapered
Spark Plug Thread Size:14

REVIEW SNAPSHOT®

by PowerReviews
ACDelcoProfessional Double Platinum Spark Plug
 
4.7

(based on 26 reviews)

Ratings Distribution

  • 5 Stars

     

    (22)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

96%

of respondents would recommend this to a friend.

Pros

  • Improves engine efficiency (20)
  • Easy to install (17)
  • Increases power (17)
  • Durable (14)
  • Lightweight (5)

Cons

    Best Uses

    • Everyday driving (21)
    • Replacement (16)
    • Performance driving (6)
    • Restoration (3)
      • Car & Truck:
      • Auto enthusiast (3), Casual driver (3), Truck enthusiast (3)
      • Reviewer Profile:
      • Casual driver (14), Auto enthusiast (6), Truck enthusiast (5), Mechanic (3)

    Most Liked Positive Review

     

    AC Delco spark plugs

    This is the OEM replacement for my 1998 GMC Jimmy (and all the GM Vortec V6's out there). The original plugs were still running smoothly after 152,000 miles but the gas milage...Read complete review

    This is the OEM replacement for my 1998 GMC Jimmy (and all the GM Vortec V6's out there). The original plugs were still running smoothly after 152,000 miles but the gas milage was dropping. You can't beat that kind of dependability or quality so why even look for an aftermarket plug. They have changed the design and part number from 41-992 (my old ones) to 41-993. These newer plugs have a tiny spark wire extending off of the center electrode instead of the flat rod. I guess this functions like a "lightning rod" and makes the spark more "focused".

    NOTE: these are the Professional Platinum plugs; HOWEVER, the box is marked Iridium. Theses are not suposed to be Iridium plugs and are pre-gapped just like a platinum plug should be (around 0.06 on the 41-993). Maybe someone can add a comment if they know something. Yes its the correct box, both the boxes and the plugs indicate 41-993. Whats up with that ?

    Installing a spark-plug is not hard, in principle, (loosen, remove, insert, tighten) but plugs on the Jimmy (Blazer or Bravada) are not a simple job because of their locations. Once you learn all the tricks its actually not so bad (except #3 plug, even after you know what to do its 10 minutes by itself). Yes these plugs cost a bit more (at list price) than some of the others but these are the plugs you want in your GM engine to get the optimum performance and longevity (unless you plan on re-engineering the entire ignition system with after-market performance parts). Use a coupon code at Advance Auto and you can get 40% off! Or just spend a couple of bucks now and be done with it, you don't want to do this plug change often. Unless you plan on modifing the entire ignition system just stick with what was designed for your motor. If these plugs run as well as the originals, they will outlast my ownership of the Jimmy (or me).

    I have seen the mpg increase to the level I originally had when I bought the Jimmy (23.5 mpg highway). With the old plugs, it had slowly been dropping off over the last 30,000 down to about 20.7 mpg. I should have done this job 3 years ago.

    VS

    Most Liked Negative Review

     

    one bad out of 6

    out of 6 plugs had one with bad threads caused a skip and it would be the one hardest to reach.

    out of 6 plugs had one with bad threads caused a skip and it would be the one hardest to reach.

    Reviewed by 26 customers

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    2.0

    one bad out of 6

    By handy man

    from winston salem nc

    About Me Casual Driver

    Verified Buyer
    3 or more reviews submitted

    Pros

      Cons

        Best Uses

        • Everyday Driving

        Comments about ACDelco Professional Double Platinum Spark Plug:

        out of 6 plugs had one with bad threads caused a skip and it would be the one hardest to reach.

        Comment on this review(earn points)

         
        5.0

        A-1 PLUGS

        By val

        from STOCKBRIGE GA.

        About Me Casual Driver

        Verified Buyer
        3 or more reviews submitted

        Pros

        • Durable
        • Easy To Install
        • Improves Engine Efficiency
        • Increases Power
        • Lightweight

        Cons

          Best Uses

          • Everyday Driving

          Comments about ACDelco Professional Double Platinum Spark Plug:

          BEST PLUGS

          Comment on this review(earn points)

           
          5.0

          great product

          By gm

          from Chicago, Il

          About Me Casual Driver

          Verified Buyer
          3 or more reviews submitted

          Pros

          • Durable
          • Easy To Install
          • Improves Engine Efficiency
          • Increases Power

          Cons

            Best Uses

            • Everyday Driving

            Comments about ACDelco Professional Double Platinum Spark Plug:

            When I installed this spark plugs on my suburban immediately felt the difference more powerful and smooth driving I hope these lasts long

            Comment on this review(earn points)

            (13 of 26 customers found this review helpful)

             
            5.0

            Works great

            By Bob

            from La.

            About Me Casual Driver

            Verified Buyer
            Level 2

            Pros

            • Improves Engine Efficiency
            • Increases Power

            Cons

              Best Uses

              • Replacement

              Comments about ACDelco Professional Double Platinum Spark Plug:

              Replaced plugs in my boat,now it runs great.

              Comment on this review(earn points)

              (15 of 29 customers found this review helpful)

               
              5.0

              Spend the extra money for these plugs!

              By Vcv

              from Atlanta, GA

              About Me Auto Enthusiast

              Verified Buyer
              3 or more reviews submitted

              Pros

              • Durable
              • Easy To Install
              • Improves Engine Efficiency
              • Increases Power

              Cons

                Best Uses

                • Everyday Driving
                • Replacement

                Comments about ACDelco Professional Double Platinum Spark Plug:

                Expensive, but worth it and should return ROI in fuel cost

                Comment on this review(earn points)

                (17 of 34 customers found this review helpful)

                 
                4.0

                great plug for my gm

                By charlie

                from fl

                About Me Truck Enthusiast

                Verified Buyer
                Level 3

                Pros

                • Improves Engine Efficiency

                Cons

                  Best Uses

                  • Everyday Driving
                  • Replacement

                  Comments about ACDelco Professional Double Platinum Spark Plug:

                  works great in my 4.3 sonoma

                  Comment on this review(earn points)

                  (16 of 33 customers found this review helpful)

                   
                  5.0

                  AC 41-993

                  By Clem

                  from Florida

                  About Me Casual Driver

                  Verified Buyer
                  Level 2

                  Pros

                  • Easy To Install
                  • Improves Engine Efficiency
                  • Lightweight

                  Cons

                    Best Uses

                    • Replacement

                    Comments about ACDelco Professional Double Platinum Spark Plug:

                    Pre Gapped and ready to go in Mercruiser boat engine, at a fraction of the marina price for same plug.

                    Comment on this review(earn points)

                    (14 of 32 customers found this review helpful)

                     
                    5.0

                    "I would buy this product again

                    By CarPartsMadeintheUSA

                    from illinois.

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

                    Verified Buyer
                    Level 2

                    Pros

                    • Durable
                    • Easy To Install
                    • Improves Engine Efficiency
                    • Increases Power
                    • Lightweight

                    Cons

                      Best Uses

                      • Everyday Driving
                      • Performance Driving
                      • Racing
                      • Replacement
                      • Restoration

                      Comments about ACDelco Professional Double Platinum Spark Plug:

                      used another brand in my truck what a mistake went back to good ol ACDelco nothing like Oem plugs to make it run fine..Dont be fooled by others.

                      Comment on this review(earn points)

                      (15 of 31 customers found this review helpful)

                       
                      5.0

                      Great product

                      By Alchemist

                      from Kentucky

                      About Me Auto Enthusiast, Engineer, Truck Enthusiast

                      Ask me a question

                      Verified Buyer
                      Level 4

                      Pros

                      • Best Plug For Gm
                      • Improves Engine Efficiency
                      • Increases Power

                      Cons

                        Best Uses

                          Comments about ACDelco Professional Double Platinum Spark Plug:

                          The AC Delco Iridium line is clearly the best plug for the money, for economy and performance, for a GM car or truck. I use these in all four of my GM vehicles. One thing to remember - you NEVER gap a GM platinum or iridium plug. The small bit of platinum or iridium can become contaminated or dislodged and will contribute to a shorter plug life. Copper plugs are different, but rememember this about the AC Delco's. One other side note - if your car or truck has a lot of miles and you are burning any oil (valve seals and/or rings), consider using a copper plug.

                          Comment on this review(earn points)

                          (19 of 38 customers found this review helpful)

                           
                          5.0

                          i would buy again

                          By sandy

                          from scotrun pa

                          About Me Casual Driver

                          Verified Buyer
                          Level 2

                          Pros

                          • Durable
                          • Easy To Install
                          • Improves Engine Efficiency
                          • Increases Power
                          • Lightweight

                          Cons

                            Best Uses

                            • Everyday Driving
                            • Performance Driving
                            • Replacement

                            Comments about ACDelco Professional Double Platinum Spark Plug:

                            Great product.

                            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.

                            13 Questions | 18 Answers
                            Displaying questions 1-10Previous | Next »
                            • Q:

                              iam looking for the performance spark plug for my Chevrolet suburban c1500
                              Asked on 12/23/2013 by bojack from cairo ga

                              1 answer

                              • CUSTOMER CARE

                                A:

                                Hi bojack, glad to assist you! To locate the exact performance spark plug, please provide us the year, and engine size of your vehicle.

                                Answered on 12/24/2013 by Steve from AAP
                            • Q:

                              rebate on 41993 spark plugs
                              Asked on 2/15/2013 by fast

                              1 answer

                              • CUSTOMER CARE

                                A:

                                With reference to the ACDelco Spark Plug (Part No. 41-993), for more information about your rebate you may visit our rebate website at https://advanceautoparts.4myrebate.com/. This website will provide you with the status of your rebate, find rebate forms, and how to contact our rebate customer service center. 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 2/16/2013 by Steve from AAP
                            • Q:

                              I have a 02 S-10 ZR2 pkg with a 4.3L. will these plugs fit? The # I have is 41-948 or has the # changed? I want the right plugs in my vehicle.I don't want to have any problems or and ses light.
                              Asked on 12/25/2012 by Lt from Norwood Mass

                              1 answer

                              • CUSTOMER CARE

                                A:

                                This ACDelco Spark Plug (Part No. 41-993) is an exact fit for your 2002 Chevrolet S10 @GAP .060. 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 12/25/2012 by Steve from AAP
                            • Q:

                              Is this price for one plug or all six in one pack?
                              Asked on 4/15/2012 by DiGar from Elizabethtown, KY

                              3 answers

                              • A:

                                That' per plug my friend!

                                Answered on 7/3/2012 by Larry from Candler, NC
                              • CUSTOMER CARE

                                A:

                                This part ACDelco Spark Plug, Part No. 41-993 manufactured by ACDelco is sold individually.
                                For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.

                                Answered on 4/16/2012 by Aaron from AAP
                              • A:

                                most spark plugs are priced per plug. more expensive plugs are higher quality, ie. iridium

                                Answered on 8/3/2012 by fil from c-bus ohio
                            • Q:

                              for 6.95 i highly doubt that this is just one plug how many am i getting for this price?
                              Asked on 3/31/2012 by Stephen the mechanic from Millville NJ

                              1 answer

                              • CUSTOMER CARE

                                A:

                                This part ACDelco Spark Plug, Part No. 41-993 manufactured by ACDelco is sold individually.
                                For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.

                                Answered on 4/1/2012 by Aaron from AAP
                            • Q:

                              are these plugs nickle plated
                              Asked on 2/13/2012 by mickey from tazewell va

                              1 answer

                              • CUSTOMER CARE

                                A:

                                This ACDelco Spark Plug with part# 41-993 is an Original Equipment (OE) supplier. This has dual platinum tip for improved resistance to spark erosion and corrosive combustion chamber environment.

                                Answered on 2/14/2012 by Vincent from AAP
                            • Q:

                              chev 79 c-10 5.7 engine, ac plugs part no#41-993 platinum.what is the correct plug gap. is it 45 or 60? 35-gap is for the older plugs like 44RT.
                              Asked on 11/14/2011 by Anonymous from middletown,va

                              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 11/14/2011 by Steve from AAP
                            • Q:

                              what is plug gap for 1997 chev c-10 with a 5.7 engine.
                              Asked on 11/13/2011 by Anonymous from middletown,va

                              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 11/14/2011 by Vincent from AAP
                            • Q:

                              what is the difference between the ac-41-993 and the ac-41-932 plugs
                              Asked on 10/17/2011 by Anonymous

                              1 answer

                              • CUSTOMER CARE

                                A:

                                Both are same spark plug and the part #41-932 is the old part number of part #41-993.

                                Answered on 10/17/2011 by Dennis from AAP
                            • Q:

                              what is the spark plug gap suposed to be
                              Asked on 7/30/2010 by Anonymous from new jersey

                              2 answers

                              • CUSTOMER CARE

                                A:

                                These are usually pre-gapped specifically for your vehicle, although some have to be gapped by the owner. For further assistance, please provide the year, make, model and engine size of your vehicle.

                                Answered on 8/1/2010 by Mike from AAP
                              • A:

                                they are preset from the factory at .65

                                Answered on 9/3/2010 by Bobby Lee from SutherlandSprings, TEXAS
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