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NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4

4.6 4.6 out of 5 stars 855 ratings

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Brand NGK
Core Material Iridium
Top Material Type Metal

About this item

  • NGK Sparkplugs
  • Spark plugs
  • Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage
  • Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
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NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4
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Price$26.38$27.79$39.96$59.96$32.49$27.95
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it Mar 29 - Apr 2
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Value for money
4.0
4.1
4.9
5.0
4.1
Mileage
3.9
3.8
4.9
5.0
4.0
Longevity
3.8
3.3
5.0
Sold By
OverStockDirect
ATK Industrial
Fearless Trade662
Sixity Auto
Sixity Auto
LIGHTKOREA
number of items
4
1
1
1
1
core material
Iridium
Copper
Iridium
Iridium
Iridium

Product Description

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity. NGK offers the Quality, Reliability and Durability you'd expect from an OEM manufacturer. NGK is the world's largest supplier of OEM spark plugs. It is recommended to research applications on NGK s website prior to purchase to make sure this OEM part fits your vehicle, including engine, drivetrain and quantity needed.

Product information

Technical Details

Additional Information

Warranty & Support

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Product Warranty: For warranty information about this product, please click here

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NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4


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Customer reviews

4.6 out of 5 stars
4.6 out of 5
855 global ratings

Customers say

Customers like the performance, value, ease of installation, and fit of the spark plugs. For example, they mention that they do the job pretty damn well, are great value for the money, and that they fit perfectly. That said, opinions are mixed on quality.

AI-generated from the text of customer reviews

39 customers mention33 positive6 negative

Customers like the performance of the spark plug. They say it does the job pretty damn well, the engine runs well with them, and the vehicle runs great after switching back. Some say that the sparkplugs provide a great performance upgrade and have been running great for 2 months. Overall, customers are satisfied with the performance and recommend them to others.

"I buy these for my 6.0 LS built motor and they works great I always have an extra set in my garage" Read more

"This fit my 2013 2500 Suburban perfectly and provided a really great performance upgrade." Read more

"...Tools I used- KNIPEX - 3891200 to pull the wires off - worked great...." Read more

"Motor runs smooth. Starts great . Would recommend." Read more

23 customers mention20 positive3 negative

Customers like the value of the spark plugs. They say it's a great product for the money, with higher quality.

"Good quality and reasonable price. Check gap before use." Read more

"great price and quick delivery. beats the local auto parts store" Read more

"Great Iridium Spark plugs for the Money, that can be ordered in an entire set of eight (8) as needed for 5.3L V8 trucks...." Read more

"It's good price" Read more

15 customers mention15 positive0 negative

Customers find the installation of the spark plugs to be easy. They mention that the plugs are ready to install out of the box, with no issues on install. Some say that the sparks plugs improve mileage, and provide smoother acceleration.

"...Very careful adjustments made and in they went. Fired right up." Read more

"...This is for a 2005 Chevy Silverado 5.3L. The plugs fit and were easy enough to install. I did check the gap to be sure they were all 0.40...." Read more

"Motor runs smooth. Starts great . Would recommend." Read more

"great price and quick delivery. beats the local auto parts store" Read more

11 customers mention9 positive2 negative

Customers like the fit of the spark plugs. They say that they fit perfectly and are easy enough to install.

"...This is for a 2005 Chevy Silverado 5.3L. The plugs fit and were easy enough to install. I did check the gap to be sure they were all 0.40...." Read more

"Fits perfectly" Read more

"perfect fit on my 97 silverado" Read more

"...Very easy to install, maybe 20 minutes. Exact fit on everything." Read more

40 customers mention27 positive13 negative

Customers are mixed about the quality of the spark plug. Some mention that they last forever and are of great quality. Others say that one of the plugs was defective and started running rough.

"Good stock replacement plugs!" Read more

"...I did check the gap to be sure they were all 0.40. Not one was missing or broken. I applied the anti seize lubricant...." Read more

"...The branding/printing on the plugs themselves we're also of poor quality. Nothing about these plugs were up to NGK's quality standards...." Read more

"Good quality but needed to be gapped." Read more

4 customers mention0 positive4 negative

Customers are dissatisfied with the gap of the spark plug. They mention that it's not consistent, and the gaps are not properly gapped.

"Good quality but needed to be gapped." Read more

"NGK is the best but these were not gapped correctly for my vehicle" Read more

"Not gapped correctly." Read more

"...My only complaint is that the gaps were not consistent and varied a bit - mostly towards the lower end, or below, the acceptable size range...." Read more

I’m totally satisfied
5 Stars
I’m totally satisfied
Now runs like new, thanks
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Top reviews from the United States

Reviewed in the United States on December 21, 2023
Number of Items: 4Verified Purchase
Reviewed in the United States on November 28, 2023
Number of Items: 4Verified Purchase
One person found this helpful
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Reviewed in the United States on May 21, 2023
Number of Items: 4Verified Purchase
2 people found this helpful
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Reviewed in the United States on November 7, 2023
Number of Items: 4Verified Purchase
Reviewed in the United States on September 26, 2023
Number of Items: 4Verified Purchase
Reviewed in the United States on December 2, 2023
Number of Items: 4Verified Purchase
Reviewed in the United States on December 7, 2023
Number of Items: 4Verified Purchase
One person found this helpful
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Reviewed in the United States on August 18, 2023
Number of Items: 4Verified Purchase

Top reviews from other countries

Amazon Customer
5.0 out of 5 stars Very satisfied.
Reviewed in Canada on March 5, 2022
Number of Items: 4Verified Purchase
Andre
5.0 out of 5 stars Double check gap, otherwise good
Reviewed in Canada on November 4, 2022
Number of Items: 4Verified Purchase
Ross Kuglin
5.0 out of 5 stars Great product, fast and best price!!
Reviewed in Canada on July 27, 2022
Number of Items: 4Verified Purchase
La vérité S.V.P.
5.0 out of 5 stars Les bougies iridium pour 100 000KM
Reviewed in Canada on May 8, 2018
Number of Items: 4Verified Purchase
Amazon Customer
4.0 out of 5 stars changed them to fix a misfire,turns out it was the oxygen sensor!
Reviewed in Canada on March 30, 2019
Number of Items: 4Verified Purchase