NGK® - HX™ Ruthenium Spark Plug

40 reviews|Item # sp186636
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$13.29 - $13.30
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Features

  • DFE & PSPE™ tip designs
  • Superior oxidation resistance
  • Advanced high-ignitability technology
  • Enhanced blistering/anti-peeling

Product Details

HX™ Ruthenium Spark Plug by NGK®. NGK Spark Plugs is introducing the latest technology in high ignitability spark plugs to the automotive aftermarket NGK Ruthenium HX™. The ultimate high ignitability spark plugs from NGK. Modern engines demand spark plugs that provide top performance while enduring the most severe conditions.

Installation

NGK® - Spark Plugs Installation VideoNGK® - Spark Plugs Installation Video
NGK® - Spark Plugs installation instruction

NGK Ruthenium technology provides maximum durability and performance in newer engines where greater ignition efficiency is demanded. Modern engine designs utilize advanced technologies to create more power with less fuel. This results in greater heat and pressure in the combustion chamber, which shortens the life the spark plug. In response, NGK created Ruthenium HX™, a high ignitability spark plug with outstanding service life.

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Reviews

(40)
Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.
/5
1-10 of 40 Reviews
4 of 5
Great Investment!
I had one that had a bad core but CARiD replaced it. I had some little more power and ran smoother. Gas lasted longer. My idling rpm was greater and had to normal out after it warmed up because it would jump at stop signs. Ended up burning out two of the ignition coils weeks later which I am having to order here if they get them all in stock. So buy ignition coils if changing to these so it's one job. Worth the investment.
NGK® - Spark Plugs Ruthenium HX™
Posted by Jason (Hanover Park, IL) / August 04, 2021
5 of 5
10/10
It is worth the price. You're not gaining massive performance but also not losing anything whatsoever. They spark faster/longer and are much more durable than other spark plugs due to the ruthenium element involved. Longevity Is better than other plugs as well. Time will tell. The plugs are likely not pre-gapped to the OEM specs of your car. If so, make sure you use a proper tool/gauge. Do not use the old style disc gappers as they destroy the precious materials.
Posted by Customer / May 21, 20212012 Ford F-250
5 of 5
Good price, Good service
Good price, good service
Posted by Customer / May 02, 20212019 Honda Ridgeline
4 of 5
Not the Wrong Decision
I hope I have 1% improvement, but it isn't the noticeable improvement I hoped for. These should be worth the additional cost in total life at least.
Posted by mike (Frederick, MD) / July 28, 20202014 Ford Fusion
5 of 5
Improved Gas Mileage and Performance
In less than 500 miles I was able to record 37+ mpg for 200 miles at 70 mph with three people in the car. Also, around town went from 29+ mpg to 32+ mpg. Acceleration is smoother.
NGK® - HX™ Ruthenium Spark Plug
Posted by Customer / July 12, 20202017 Buick Encore
5 of 5
Tune Up.
Definitely noticed a slight horsepower increase after installation. Throttle response improved as well.
Posted by Peter (Derby, VT) / September 25, 20192001 Toyota Celica
1 of 5
After Install
I finely installed these NGK 4998 plugs and I guess I was right. I now have a misfire on number 6 code so am going to put back my Bosch 9661. It might be the plugs or might not but thats the only thing different about the Jeep. I will will let you know after I replace them
Posted by Kurt (Otterville, MO) / September 19, 20212011 Jeep Wrangler
5 of 5
NGK 4998 Plugs
After looking on the computer for a good price on NGK 4998 plugs for the Jeep I found CARiD which had a great price for them $6.75 ea. Every other web page was asking $10 to $15 ea, one site was selling them for $26.31 ea. Which really makes me wonder if these plugs are the real thing. Like the old saying goes if the deal is too good to be true it usually is not. So am really not in a big hurry to install these until I find out if these are real NGK 4998 or cheap knock offs that will destroy my motor.
Posted by Customer / July 22, 20212011 Jeep Wrangler
5 of 5
Spark Plugs
Product was easily installed, no issues. Service was great and my savings was more than I expected.
Posted by Laquita (Memphis, TN) / August 17, 20192001 Mercedes E Class
5 of 5
Spark Plugs Ideal for Long Duration
High quality product and performance for my car. I recommend it!
Posted by Roberto Cerdas (Doral, FL) / July 12, 20192012 Honda Civic