Professional Iridium Spark Plug
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ACDelco Professional Iridium Spark Plug

Part No. 41-101 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:Iridium
Resistor:Yes
Spark Plug Seat Type:Tapered
Spark Plug Thread Size:14

REVIEW SNAPSHOT®

by PowerReviews
ACDelcoProfessional Iridium Spark Plug
 
4.9

(based on 37 reviews)

Ratings Distribution

  • 5 Stars

     

    (32)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Improves engine efficiency (30)
  • Increases power (22)
  • Durable (20)
  • Easy to install (20)
  • Lightweight (4)

Cons

    Best Uses

    • Everyday driving (25)
    • Replacement (25)
    • Performance driving (10)
    • Restoration (6)
    • Racing (5)
      • Car & Truck:
      • Casual driver (10), Auto enthusiast (8), Mechanic (5), Truck enthusiast (3)
      • Reviewer Profile:
      • Casual driver (13), Auto enthusiast (11), Mechanic (8)

    Reviewed by 37 customers

    Sort by

    Displaying reviews 1-10

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    (1 of 1 customers found this review helpful)

     
    5.0

    Good plugs

    By Greg

    from Dayton, Ohio

    About Me Auto Enthusiast

    Verified Buyer
    Level 3

    Pros

    • Easy To Install
    • Improves Engine Efficiency

    Cons

      Best Uses

        Comments about ACDelco Professional Iridium Spark Plug:

        These plugs worked just fine in my 1999 Park Ave. They should last 100k in this application. Very similar to the original plugs. As with any spark plug time will tell.

        Comment on this review(earn points)

        (1 of 1 customers found this review helpful)

         
        5.0

        Great OE replacement

        By lex

        from Tri Cities,tn

        About Me Auto Enthusiast, Casual Driver

        Pros

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

        Cons

          Best Uses

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

          Comments about ACDelco Professional Iridium Spark Plug:

          Best to go with OE iridium by AC Delco! Original plugs looked pretty good for having 113k on them and after replacement instant improvement in MPG they also have 3 yr replacement warranty!

          Comment on this review(earn points)

          (1 of 1 customers found this review helpful)

           
          5.0

          The Only Plug to Use on a Chevy Equinox

          By Tom

          from Oswego, IL

          About Me Auto Enthusiast, Competitive Driver, Mechanic

          Ask me a question

          3 or more reviews submitted

          Pros

          • Improves Engine Efficiency
          • Increases Power

          Cons

          • none

          Best Uses

          • Chevy Equinox
          • Replacement

          Comments about ACDelco Professional Iridium Spark Plug:

          Own 2005 Chevy Equinox. The Equinox runs better with high quality plugs and wires. I know because there are known problems with OEM plug wires which will electricly breakdown, with as little as 50k miles. This will fool the engine's on-board ECM. Performance will drop, the engine/trans will seem to bog down and/or buck. It seemed like a new engine and trans with new quality wires & plugs. There was a totaly noticable difference of improvement. Stick with the high quality stuff on this Nox!

          Comment on this review(earn points)

          (1 of 1 customers found this review helpful)

           
          5.0

          AC Spark Plug

          By Mick

          from Land O Lakes, FL

          About Me Auto Enthusiast

          Verified Buyer
          Level 2

          Pros

          • Improves Engine Efficiency

          Cons

            Best Uses

            • Replacement

            Comments about ACDelco Professional Iridium Spark Plug:

            Direct replacement. Replaced the origninal set that had 120k miles on them. Immediate increase in gas milage.

            Comment on this review(earn points)

            (5 of 9 customers found this review helpful)

             
            5.0

            Worked great. No problems

            By lazscrappy

            from Watertown, ct

            About Me Mechanic

            Verified Buyer
            Helpful Reviewer

            Pros

              Cons

                Best Uses

                  Comments about ACDelco Professional Iridium Spark Plug:

                  Worked great. No gap needed.

                  Comment on this review(earn points)

                  (4 of 8 customers found this review helpful)

                   
                  5.0

                  AC plugs

                  By Steve

                  from Austin, Ark

                  About Me Auto Enthusiast

                  Verified Buyer
                  Level 2

                  Pros

                  • Durable
                  • Improves Engine Efficiency
                  • Increases Power

                  Cons

                    Best Uses

                    • Everyday Driving
                    • Replacement

                    Comments about ACDelco Professional Iridium Spark Plug:

                    Great log lasting plugs

                    Comment on this review(earn points)

                    (5 of 9 customers found this review helpful)

                     
                    5.0

                    AC Delco Pro Iridium

                    By God_Splitter

                    from Colorado Springs, CO

                    About Me Casual Driver

                    Level 3

                    Pros

                    • Easy To Install
                    • Increases Power

                    Cons

                      Best Uses

                      • Everyday Driving
                      • Replacement

                      Comments about ACDelco Professional Iridium Spark Plug:

                      I recently purchased the AC Delco Pro Iridium spark plugs (Part No. 41-101) for my new to me 2005 Chevrolet Equinox with 97000 miles. The OEM plugs were the exact same and upon removing them I noticed that they still had plenty of life left in them despite manufacturers recommendations of 100000 miles. The old plugs came out easily and the new ones went in easy. I noticed a generous increase in power afterwards.

                      Combine the already decent price with a manufacturers rebate of $2.00 per plug and that is an excellent deal!!

                      Comment on this review(earn points)

                      (4 of 8 customers found this review helpful)

                       
                      4.0

                      routine maintence

                      By Jackie

                      from Clarion, Pa

                      About Me Casual Driver, Commuter

                      Verified Buyer
                      Level 3

                      Pros

                      • Easy To Install

                      Cons

                        Best Uses

                        • Everyday Driving

                        Comments about ACDelco Professional Iridium Spark Plug:

                        routine maintence

                        Comment on this review(earn points)

                        (4 of 8 customers found this review helpful)

                         
                        4.0

                        Great for GM cars OEM equipment

                        By Mike

                        from Atlanta,Ga

                        About Me Auto Enthusiast, Casual Driver

                        Verified Buyer
                        Helpful Reviewer

                        Pros

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

                        Cons

                          Best Uses

                          • Everyday Driving
                          • Replacement

                          Comments about ACDelco Professional Iridium Spark Plug:

                          Great replacement part with OEM specs

                          Comment on this review(earn points)

                          (5 of 9 customers found this review helpful)

                           
                          5.0

                          I will buy these again.

                          By Didly

                          from waynesboro,Ga

                          Verified Buyer
                          Helpful Reviewer

                          Pros

                          • Easy To Install

                          Cons

                            Best Uses

                              Comments about ACDelco Professional Iridium Spark Plug:

                              My Wife drive's this car more than I do she says that she can tell the difference.it accelerates better and gas mileage is better.

                              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.

                              8 Questions | 12 Answers
                              Displaying questions 1-8
                              • Q:

                                does this replace ACDelco 41-940 Professional Platinum Spark Plugs for my 2000 chevy Malibu gm 3.1L engine
                                Asked on 3/4/2014 by Julian from Union, NJ

                                1 answer

                              • Q:

                                I thought this plug or product came gapped ready to go
                                Asked on 2/2/2013 by Bob from C.L., IL 60014

                                1 answer

                                • CUSTOMER CARE

                                  A:

                                  A spark plug part number might fit hundreds of different engines from many different manufacturers. Although the spark plug from the factory will come with a gap to a pre-selected setting, this may not be the right gap for your particular engine. The incorrect plug gap for your engine can contribute to a high rate of misfires, loss of power, plug fouling, poor fuel economy, and accelerated plug wear. It is always best to check the gap against the manufacturer's specifications. If adjusting the gap on fine wire or precious metal plugs such as platinum or iridium be very careful not to apply any pressure or prying force to the fine wire center electrode or insulator as they can be damaged. The gap should be adjusted by only moving the ground electrode.
                                  For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.
                                  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 2/2/2013 by Aaron from AAP
                              • Q:

                                does ac 41-101 replace ac 41-933 2000 buick lasabre
                                Asked on 11/1/2012 by painterpete from norwood ny

                                1 answer

                                • CUSTOMER CARE

                                  A:

                                  This ACDelco Spark Plug (Part No. 41-101) is an exact fit for your 2000 Buick LeSabre. 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 11/1/2012 by Steve from AAP
                              • Q:

                                does this replace 41-933
                                Asked on 10/31/2012 by painterpete from norwood ny

                                1 answer

                                • CUSTOMER CARE

                                  A:

                                  For further assistance regarding ACDelco Spark Plug - Part No. 41-101, please provide the year, make, model and engine size of your vehicle. This information would help us to assist you in a better way.
                                  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 10/31/2012 by Aaron from AAP
                              • Q:

                                do I use lubricant on the plug threads on installation Thanks Hderb
                                Asked on 9/10/2012 by herb from Shelton Ct .06484

                                2 answers

                                • A:

                                  If you have aluminum heads,yes use antiseeze on threads,if you have cast iron heads put plugs in dry.Be careful not to over tighten them.Hope this helps, Jason.

                                  Answered on 6/16/2014 by Jayrod from Wilmington, NC.
                                • CUSTOMER CARE

                                  A:

                                  No, it is not recommended to use anti-seize on spark plugs period and on Aluminum heads to boot. It may cause fouling, misfire, etc. For any further assistance, please 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 9/10/2012 by Vincent from AAP
                              • Q:

                                what is an iridium plug?
                                Asked on 10/10/2011 by Anonymous

                                1 answer

                                • CUSTOMER CARE

                                  A:

                                  Iridium spark plug is employed with high corrosion resistance at high temperatures is needed and it crucibles for recrystallization of semiconductors at high temperatures.

                                  Answered on 10/11/2011 by Dennis from AAP
                              • Q:

                                what is the gap? how wide can the gap be before plug doesn't work?
                                Asked on 1/29/2011 by Anonymous

                                3 answers

                                • A:

                                  Here is half your answer.
                                  Spark Plug Gap 1.52 mm (0.060 in)

                                  Answered on 3/14/2011 by Shump from Leesburg VA
                                • A:

                                  0.060in

                                  Answered on 6/25/2011 by El mechanico cmcsev from Denver CO
                                • A:

                                  0.80 thousands

                                  Answered on 9/25/2011 by Terminator from Beaufort, S. Carolina
                              • Q:

                                how many spark plugs come with 1 order
                                Asked on 11/11/2010 by frito bandito from bay city

                                2 answers

                                • CUSTOMER CARE

                                  A:

                                  these are sold individually

                                  Answered on 11/15/2010 by Krystal from AAP
                                • A:

                                  One.

                                  Answered on 12/1/2010 by buzzturk from SF
                              Displaying questions 1-8

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