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NGK (3787) ILTR6A-8G Laser Iridium Spark Plug, Pack of 1

by NGK
4.2 out of 5 stars 24 customer reviews
List Price: $20.50
Price: $12.06 & FREE Shipping on orders over $49. Details
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  • You can depend on NGK for quality and reliability
  • Features laser welded Iridium center electrode tip
  • Faster starts and quicker acceleration
  • Better fuel economy and lower emissions
  • Platinum disc welded to backside of ground electrode provides long life
› See more product details
17 new from $6.00 1 used from $10.14
$12.06 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • NGK (3787) ILTR6A-8G Laser Iridium Spark Plug, Pack of 1
  • +
  • Permatex 81343 Anti-Seize Lubricant, 1 oz. Tube
  • +
  • Lisle 67870 Spark Plug Gauge Gap
Total price: $20.38
Buy the selected items together

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Product Information

Technical Details

Brand NGK
Item Weight 1 pounds
Product Dimensions 4 x 4 x 1 inches
Origin China
Item model number ILTR6A-8G
Manufacturer Part Number ILTR6A-8G
OEM Part Number 3787
ABPA Partslink Number ILTR6A-8G

Additional Information

ASIN B001MU5LNS
Customer Reviews
4.2 out of 5 stars 24 customer reviews

4.2 out of 5 stars
Best Sellers Rank #55,393 in Automotive (See top 100)
#193 in Automotive > Performance Parts & Accessories > Ignition & Electrical > Spark Plugs & Wires > Spark Plugs
#462 in Automotive > Replacement Parts > Ignition Parts > Spark Plugs & Wires > Spark Plugs
Shipping Weight 4.8 ounces (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available January 1, 2007

Warranty & Support

Warranty, Parts:Parts

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Customer Questions & Answers
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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsPlugs match the OEM plugs on the CX-7
By V. Chia on September 27, 2012
Verified Purchase
This is the 2nd time I ordered these and the gap sizing was correct both times. Bought these for a 2007 Mazda CX-7 GT with the 2.3 4-cylinder turbocharged engine (same as on the Mazdaspeed3 and 6 engines). These also happen to be the same, rebranded as FOMOCO (Ford Motor Company) at the time, as the OEM plugs that came with the car.
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2.0 out of 5 starsNot so happy.
By NelMazdaspeed on November 17, 2013
Verified Purchase
My review is based on a few things, first of all the packing left a lot to be desired, the individual boxes Were loosely packed with nothing to keep them from shifting during delivery, 2 of the spark plugs were completely out of their boxes. I find that totally unacceptable considering the price of these plugs. I couldn't tell if they were damaged but since the install my car has a slight miss and my gas mileage decreased by 2 points. I checked the gap and they were all correct according to their spec. I've run the car for a few hundred miles already so I plan on pulling them out and re-checking the gap and see their condition. My speed3 is completely stock and was running great with the original fomocos that were pretty worn.
If anybody has had the same problem let me know or if you found a cure I would love to hear it.
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5.0 out of 5 starsOEM Spark Plugs for less $ than Dealership
By Chris F. on February 20, 2013
Verified Purchase
Haven't noticed a difference since installing them, which is a good sign. OEM for 08 MazdaSpeed3, for half the price of the dealership. Installed quickly, no need to mess with the gap. Would order again for sure.
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5.0 out of 5 starsGood product.
By NB on October 11, 2013
Verified Purchase
I bought these plugs for my '08 Mazdaspeed3. The forums I checked all seemed to recommend these plugs, or the OEM's, which I believe were Denso's. The plugs installed fine and were properly gapped out of the box. The car drives as it always has, so I am satisfied.
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5.0 out of 5 starsNGK (3787) ILTR6A-8G Laser Iridium Spark Plug
By Kenny M on December 22, 2013
NGK (3787) ILTR6A-8G Laser Iridium Spark Plug is the original equipment so it perfectly match, no problem at all. Performance? well, is exactly the original when my Mazda CX-7 SUV was new; no more no less, exaclty the same. 6 years with same sparks plug is realiable performance so this parts is highly recommended.
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3.0 out of 5 starsPackage Delivery Damaged
By wky on October 15, 2013
The order for 4 plugs were delivered, rather two was delivered just, and I am waiting for the other two to arrive.
Of the two delivered, one arrived with one end of the box opened and half the plug out of box, and the other has the box 'crushed'.
Cannot understand why the order was split in the first place, and the plugs should have been put into a bag, instead of 'free floating' in the larger box together with the pack of 6 motor oil ordered.
I do not think the plug tips are damaged due to the cardboard cylinder tip protector, will only know after installation.
Would get more stars if I am of the feeling the products are 'okay' upon arrival. Now waiting for post installation to know they are really 'okay'.
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5.0 out of 5 starsMazdaspeed3
By Stephen Parks on February 21, 2014
Verified Purchase
Worked fine in my 2007 MS3. All were properly gapped out of the box. The ones I replaced looked fine, but these smoothed out a rough idle and reduced some hesitation.
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5.0 out of 5 stars2007 Mazdaspeed3
By Lensley Dunkley on April 25, 2014
Verified Purchase
These plugs were a perfect OEM replacement part for my 07 mazdaspeed3 and the price was excellent. Definately recommend these plugs.
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Most Recent Customer Reviews

5.0 out of 5 starsNoticeable Improvement

Just got 4 of these and put them in my 07 MazdaSpeed3 with 68k miles. They are the same plug as OEM. I immediately noticed the acceleration was much smoother. Read more

Published 5 months ago by Veloosh
5.0 out of 5 starsWould recommend to others

Replacement spark plugs for 2010 Mazdaspeed3. The factory spark plugs are custom and you can't buy direct from NGK they have just a slightly smaller gap. Read more

Published 7 months ago by JimmiC
4.0 out of 5 starsFour Stars

SEEMS TO BE WORKING PERFECTLY IN MY SPEED6

Published 7 months ago by MonLee
3.0 out of 5 starsPerformance with them has been meh at best. Going back to stock plugs...

Tried these out in my 2009 Chevy Cobalt SS/TC. They're 1 step colder then the factory plugs. Performance with them has been meh at best. Going back to stock plugs here soon.

Published 9 months ago by Sean E Everett
5.0 out of 5 starsI love NGK

Excellent and flawless product. Installed in a roots type supercharged 2.2L ecotec motor Cavalier. No gap required. No issues whatsoever. Car runs amazing.

Published 14 months ago by Brian Toney
5.0 out of 5 starsFive Stars

Good price on these long lasting sparkplugs

Published 16 months ago by Pablo
1.0 out of 5 starsDon't order from Amazon. Great plugs. Find them elsewhere.

If you buy them, don't buy them from Amazon. There's nothing wrong with the plugs, but Amazon can't seem to deliver on these without losing or damaging some of them. Read more

Published 17 months ago by Walter E. Zink
5.0 out of 5 starsFive Stars

Direct fit in my 2007 Mazdaspeed 3

Published 18 months ago by Jesus M. Rodriguez
4.0 out of 5 starsBuying for 2010 MAZDASPEED3

I was hesitant at first since the NGK website says these are not a match for 2010+ model year. I contacted NGK directly, and they assured me that these were the OE gap, heat range,... Read more

Published 21 months ago by MKK

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