NGK® 90495 - HX™ Ruthenium Spark Plug

40 reviews|Item # mpn4629111066
Vehicle Specific
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    Replaces Original (OE) Part #:LTR6BHX
    Authorized Dealer
    $13.29
    In Stock (733)
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    Vehicle Fitment

    Buick
    Chevy
    Ford
    GMC
    Land Rover
    Lincoln
    Mazda

    Specifications

    Thread Diameter
    14 mm
    Thread Pitch
    1.25 mm
    Seat Type
    Tapered
    Reach
    25 mm (1")
    Hex Size
    5/8" (16 mm)
    Terminal Type
    Solid
    Gap
    .032"
    Center Electrode Core Material
    Copper
    Center Electrode Tip Material
    Ruthenium
    Type
    Fine Wire
    Size
    0.6 mm
    Projection
    Extended Projection
    Material
    Platinum
    Type
    Projected Square
    Quantity
    1
    Resistor
    Yes
    Resistor Value
    5k Ohm
    Heat Range
    6
    Torque Specs
    Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.
    Electrical Terminal Type
     Non-Removable Nut
    Ground Configuration
     Standard
    Ground Electrode Core Material
     Copper
    Ground Electrode Tip Design
     Projected Square Platinum Electrode - High Ignitability
    Resistance
     5000 Ohms
    Electrode Material
    Ruthenium
    Nominal Gap
    0.8 mm
    Additional Info
    Center Electrode
    Ground Electrode

    Features

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

    Product Details

    HX™ Ruthenium Spark Plug (90495) 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 InstallationNGK® - Spark Plugs Installation
    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.

    NGK® - Ruthenium HX™ Product InformationNGK® - CatalogNGK® - Spark Plugs installation instructionNGK® - FAQNGK Authorized DealerInstallationTechnologyProduct lines
    Brand:
    NGK
    Part Number:
    90495
    UPC:
    087295904954
    OE Numbers:
    LTR6BHX

    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
    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.
    NGK® 90495 - HX™ Ruthenium Spark Plug
    Posted by Customer / May 21, 20212012 Ford F-250
    4 of 5
    Great Investment!
    I had one that had a bad core but TRUCKiD 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
    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
    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 TRUCKiD 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
    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
    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

    Questions and Answers

    (0)
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!