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ACDelco 41-993 Professional Iridium Spark Plug

Free shipping on orders over $29.99

$24.76

$ 11 .99 $11.99

In Stock

1.:4


About this item

  • Iridium offers better engine idle stability and smoother performance
  • Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration
  • Iridium fine-wire electrode helps improve ignition of the fuel and burns away carbon deposits on the tip of the plug as they form, to help improve fuel economy
  • One piece suppressor seal blocks radio frequencies that can affect vehicle electronics
  • Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage. Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap


ACDelco Professional Iridium Spark Plugs are the high quality replacement ideal for many vehicles on the road today. They are the latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition has the highest melting point and strength of all metals. It provides the greatest wear resistance and durability over Platinum and Conventional spark plugs. ACDelco Professional Iridium Spark Plugs provide the best wear resistance and durability of any spark plug. These premium aftermarket replacement iridium spark plugs are manufactured to meet your expectations for fit, form and function.


Boatdave
2025-08-28 16:07:19
AC Delco is a good product. These are priced reasonable.
Laura S.
2025-08-26 13:33:05
41-993 is the upgrade part number that is recommended for the 2000 Chevrolet S10 V6 vortec engine I've been using just any AC Delco spark plugs just cuz they would work. Although I wasn't getting the power, the performance the best quality out of my vehicle. For that reason I firmly suggest to use the part number that your vehicle recommends for that specific part. Do not cross number it just cuz it will serve the purpose and it's cheaper. Your vehicle just won't perform and our best manner as you would expect for it too. And it would be your you to blame. I myself didn't realize that as when I decided to do that. There was a great positive difference and I'm glad I did and I recommend everyone to do the same. You would be oh so glad when you do
Shelly Seward
2025-07-15 18:59:05
What is going on here Amazon!? Your description CLEARLY states Pack of 8! Not so fast, I only received a pack of 4! I realize the great deal for 8 plugs but I didn't make that statement, You did! I had to reorder the product again to have 8 spark plugs for my Silverado, I feel like I got had by Amazon! The product is fine and the delivery service was great! Reached Amazon customer service and the representative told me that indeed the second order would contain spark plugs and I could return the first 4! LOL! NOPE, RECEIVED 4!Somebody, needs to correct the online info stating a pack of 8 to 4. Very misleading and misrepresenting the product which leads to aggravation!
Willy
2025-06-09 14:57:40
These plugs are the best i have ever used get better gas mileage and engine runs so much better thanks again keep up the good work everyone
DIANNA
2025-05-30 12:42:55
Description said 4 items but only 1 showed up, good thing I just need the 1 but still sucks for others. Amazon came thru and let me have it for free after wanting to return it 🙌
DanEnzmann
2025-05-28 15:01:59
These are Iridium tipped spark plugs that do not increase the spark gap as they are used. They were pre-gapped at 60 thousandths of an inch, (1.5mm). they are installed in a 5.7L GM Vortec motor. I expect these spark plugs to last longer than me.
Paul J Davila
2025-05-22 10:59:43
These spark plugs were perfect for my 1997 Chevy 1500 with 5.0L engine. They came pre-gapped. Put these in 6 years ago and they are still going strong. Much here cheaper than at the auto parts.
Eric T.
2025-04-26 11:32:28
Used 16 of these to tune up the 5.0 Mercruisers in our boat. Perfect fit of course, but also helped smooth the idle, starts up with far less cranking over, and boats typically run rich at idle, but there is noticeably less fumes as it warms up. Nice plugs at an excellent price. Would buy again for any small block chevy install!
S
2025-04-18 15:49:14
Good
RG
2025-04-16 12:00:09
Ojala volvieran al precio que las compre estaban regaladas
Mike
2025-04-15 15:07:47
Having read negative reviews where orders were received short, I was worried that something would go wrong with the order. I took a chance as it was sold directly by Amazon and in my experience, if something goes wrong, they will correct it. It was a good price and and I bought 2 packs of 4. They were received complete and all plugs were gapped 0.060 in from the factory as they were supposed to. All was perfect.
Daniel Noriega Quezada
2025-04-11 19:46:40
The media could not be loaded.
Customer
2025-02-18 15:33:18
Worked great in my 97 chevy
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