Professional Iridium Spark Plug
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ACDelco Professional Iridium Spark Plug

Part No. 41-101 Warranty Details  

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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
Seat Type:Tapered
Thread Diameter:14 mm

REVIEW SNAPSHOT®

by PowerReviews
ACDelcoProfessional Iridium Spark Plug
 
4.8

(based on 48 reviews)

Ratings Distribution

  • 5 Stars

     

    (39)

  • 4 Stars

     

    (8)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

98%

of respondents would recommend this to a friend.

Pros

  • Improves engine efficiency (37)
  • Easy to install (26)
  • Increases power (26)
  • Durable (22)
  • Lightweight (4)

Cons

No Cons

Best Uses

  • Everyday driving (34)
  • Replacement (29)
  • Performance driving (10)
  • Restoration (6)
  • Racing (5)
    • Car & Truck:
    • Casual driver (10), Auto enthusiast (8), Mechanic (5), Truck enthusiast (3)
    • Reviewer Profile:
    • Casual driver (21), Auto enthusiast (17), Mechanic (10), Competitive driver (3)

Most Liked Positive Review

 

Last spark plugs I'll need to buy

These are the stock plugs in my '04 Grand Prix. They claim to last 100,000 miles, and they deliver on that promise. After 111,000 miles I decided I should place these before they...Read complete review

These are the stock plugs in my '04 Grand Prix. They claim to last 100,000 miles, and they deliver on that promise. After 111,000 miles I decided I should place these before they caused problems. As I pulled out the old plugs I checked each and every one of them. The gap was still perfect, and they hardly looked used at all. I almost put the old plugs back in thinking I could return these, but I realized that this is probably the last time I'll change plugs on this car. Based on the condition of the old plugs, I would give these the highest recommendation. The 3800 motor is known for destroying lessor plugs, but these babies looked like they barely had a few thousand miles on them.

VS

Most Liked Negative Review

 

after market wooe's

the original iridium ac plugs lasted 100,000 miles like they should I replaced with advanced ac iridium replacements and had 2 foul out of course it took me months and lots of parts to figure...Read complete review

the original iridium ac plugs lasted 100,000 miles like they should I replaced with advanced ac iridium replacements and had 2 foul out of course it took me months and lots of parts to figure it was the new plugs causing a high end mis-fire, replaced 2 that were bad and now another cylinder mis-firing a plug gone bad I'm sure, why aftermarket original parts don't last?

Reviewed by 48 customers

Displaying reviews 1-10

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4.0

Can't answer

By 

from Gastonia NC

Verified Buyer

Comments about ACDelco Professional Iridium Spark Plug:

I am not sure. I am Shipping this part to Germany for a family member in the army

  • Was this a gift?:
  • Yes

Comment on this reviewHelp Icon(earn points)

 
5.0

Great product, very statisfied.

By 

from Holly Springs, N.C.

About Me Auto Enthusiast, Casual Driver, Mechanic

Verified Buyer

Pros

  • Easy To Install
  • Improves Engine Efficiency
  • Increases Power

Cons

  • None

Best Uses

  • Everyday Driving

Comments about ACDelco Professional Iridium Spark Plug:

I used the product in my 2003 Monte Carlo - very happy with the increased performance and power.

Comment on this reviewHelp Icon(earn points)

 
5.0

I would buy again

By 

from Howell ,MI

About Me Casual Driver

Verified Buyer

Pros

  • Easy To Install
  • Improves Engine Efficiency
  • Increases Power

Cons

    Best Uses

    • Everyday Driving
    • Replacement

    Comments about ACDelco Professional Iridium Spark Plug:

    Had 100,000 miles on old plugs. What a difference a new set makes, better mileage and performance . Money well spent.

    Comment on this reviewHelp Icon(earn points)

     
    5.0

    New Plugs

    By 

    from Walnutport, pa

    About Me Auto Enthusiast, Casual Driver

    Verified Buyer

    Pros

    • Durable
    • Easy To Install
    • Improves Engine Efficiency

    Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about ACDelco Professional Iridium Spark Plug:

      As advertised

      Comment on this reviewHelp Icon(earn points)

       
      5.0

      Easy!!!

      Profile Image

      By 

      from Hilton Head, SC

      About Me Casual Driver, Competitive Driver

      Verified Buyer

      Pros

      • Easy To Install
      • No Gaping

      Cons

      • Heavy
      • No Improvement In Performance

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about ACDelco Professional Iridium Spark Plug:

      Longer lasting than Copper!

      Comment on this reviewHelp Icon(earn points)

       
      5.0

      I would certainly buy this product again

      By 

      from Lititz, Pennsylvania

      About Me Auto Enthusiast, Casual Driver

      Verified Buyer

      Pros

      • Easy To Install
      • Improves Engine Efficiency
      • Increases Power

      Cons

      • There Are No Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about ACDelco Professional Iridium Spark Plug:

      Very good product, I could feel the improvement in the engine performance immediately. I ordered my parts on line and they were ready for pick-up in 30 minutes, Very impressive. I will continue to order my parts online. The gentleman behind the counter was vert courteous and very friendly. Very nice store to deal with.

      Comment on this reviewHelp Icon(earn points)

       
      4.0

      Good OEM replacment

      By 

      from Dover, DE

      About Me Auto Enthusiast

      Verified Buyer
      3 or more reviews submitted

      Pros

      • Durable

      Cons

        Best Uses

        • Everyday Driving

        Comments about ACDelco Professional Iridium Spark Plug:

        Directly replacement for OEM. Removed the OEM ones due to the car starting to develop a misfire. After 159,000 miles it was time to replace them. I hope to get another 159,000 miles out of these. I even checked the gap on the old ones and it appears to not have changed. Gap should be .060 Smallest gap was .058 on one and the largest was .062

        Comment on this reviewHelp Icon(earn points)

         
        5.0

        GM = AC Delco

        By 

        from Virginia Beach, VA

        About Me Auto Enthusiast, Casual Driver, Mechanic

        3 or more reviews submitted

        Pros

        • Easy To Install

        Cons

          Best Uses

          • Everyday Driving

          Comments about ACDelco Professional Iridium Spark Plug:

          Look. If you own a GM car put GM parts back in it. These are the OEM plugs for the Pontiac Grand Prix. A friend of mine put plugs in this car two weeks ago from another manfacturer. Rhymes with mosh. Car started throwing random misfire codes and eventually a P0301. I replaced the plugs with OEM an car runs great. No Misfires. This happens quite often.
          These plugs are great.

          Comment on this reviewHelp Icon(earn points)

          (1 of 1 customers found this review helpful)

           
          5.0

          The best Plugs...

          By 

          from North Ridgeville Oh

          About Me Casual Driver

          Verified Buyer
          3 or more reviews submitted

          Pros

          • Improves Engine Efficiency
          • Increases Power

          Cons

            Best Uses

            • Everyday Driving

            Comments about ACDelco Professional Iridium Spark Plug:

            The best plugs....

            Comment on this reviewHelp Icon(earn points)

            (2 of 4 customers found this review helpful)

             
            4.0

            its working did not see difference

            By 

            from Denver,CO

            About Me Casual Driver

            Verified Buyer
            Level 1

            Pros

            • Improves Engine Efficiency

            Cons

            • No Improvement In Performance

            Best Uses

            • Everyday Driving

            Comments about ACDelco Professional Iridium Spark Plug:

            Did not see difference using bosh platinum

            Comment on this reviewHelp Icon(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. For further assistance, please review your support options on our Contact Us page.

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

              Where is this plug manufactured ?
              Asked on 4/24/2015 by Speedy from Ohio

              1 answer

              • CUSTOMER CARE

                A:

                Hi Speedy, good question! Advance Auto Parts does sell Made in the USA products as well as products manufactured from many other countries in order to keep our pricing competitive. Our suppliers have multiple manufacturing plants that could result in different countries of origin for the same part.

                Answered on 4/25/2015 by Solomon
            • 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

              • 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
              • 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.
            • 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 1-9

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            Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.