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NGK IX Iridium Spark Plug Box of 4 (LKR7AIX)

Low stock! Only 3 left
$90.60
$90.60
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NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • Trivalent metal plating for superior anti-corrosion and anti-seizing properties
  • Outstanding acceleration, high fuel efficiency and durability
  • Fine iridium tip ensures durable and consistent spark

This Part Fits:

Year Make Model Submodel
2007-2008 Dodge Sprinter 2500 Base
2007-2008 Dodge Sprinter 3500 Base
2007-2008 Freightliner Sprinter 2500 Base
2007-2008 Freightliner Sprinter 3500 Base
2010-2011 Kia Soul Base
2006-2007 Mercedes-Benz C230 Sport
2012-2014 Mercedes-Benz C250 Base
2012-2014 Mercedes-Benz C250 Luxury
2012-2014 Mercedes-Benz C250 Sport
2006-2007 Mercedes-Benz C280 4Matic
2006-2007 Mercedes-Benz C280 Luxury
2008-2012 Mercedes-Benz C300 4Matic Luxury
2008-2012 Mercedes-Benz C300 4Matic Sport
2008-2011 Mercedes-Benz C300 Luxury
2008-2011 Mercedes-Benz C300 Sport
2006-2007 Mercedes-Benz C350 4Matic
2006-2007 Mercedes-Benz C350 Luxury
2006-2011 Mercedes-Benz C350 Sport
2009-2010 Mercedes-Benz CL550 4Matic
2007-2008 Mercedes-Benz CL550 Base
2006-2009 Mercedes-Benz CLK350 Base
2007-2009 Mercedes-Benz CLK550 Base
2007-2011 Mercedes-Benz CLS550 Base
2006-2011 Mercedes-Benz E350 4Matic
2006-2011 Mercedes-Benz E350 Base
2007-2011 Mercedes-Benz E550 4Matic
2007-2011 Mercedes-Benz E550 Base
2009-2015 Mercedes-Benz G550 Base
2008-2012 Mercedes-Benz GL550 Base
2010-2012 Mercedes-Benz GLK350 4Matic
2010-2012 Mercedes-Benz GLK350 Base
2006-2011 Mercedes-Benz ML350 4Matic
2009-2011 Mercedes-Benz ML350 Base
2010-2011 Mercedes-Benz ML450 Hybrid 4Matic
2008-2011 Mercedes-Benz ML550 Base
2006-2011 Mercedes-Benz R350 4Matic
2008-2009 Mercedes-Benz R350 Base
2006 Mercedes-Benz S350 Base
2010-2013 Mercedes-Benz S400 Hybrid
2007-2011 Mercedes-Benz S550 4Matic
2007-2011 Mercedes-Benz S550 Base
2007-2009,2011-2012 Mercedes-Benz SL550 Base
2012-2015 Mercedes-Benz SLK250 Base
2006-2008 Mercedes-Benz SLK280 Base
2009-2011 Mercedes-Benz SLK300 Base
2005-2011 Mercedes-Benz SLK350 Base
2007 Mitsubishi Outlander ES
2010-2013 Mitsubishi Outlander GT
2007-2008 Mitsubishi Outlander LS
2007-2011 Mitsubishi Outlander XLS
2009-2010 Smart Fortwo Brabus
2008-2015 Smart Fortwo Passion
2008-2015 Smart Fortwo Passion Cabrio
2008-2015 Smart Fortwo Pure
NGK IX Iridium Spark Plug Box of 4 (LKR7AIX)

$90.60

  • Fast shipping

    Ordered a product and it arrived the next day. Super impressed with the speed and the careful packaging.

    Jordan Smith
    Seattle, Washington

  • Excellent service

    Customer support was helpful; they resolved my issue in minutes. Really appreciated the follow-up email to ensure satisfaction.

    Taylor Christos
    Austin, Texas

  • Great selection

    Wide variety of products across the range. Found everything I needed in one place, very convenient.

    Alex Williams
    London, England

  • Top quality

    The product I bought exceeded my expectations. Top-notch quality, thoughtful design, and it came beautifully packaged.

    Sam Davis
    San Francisco, California

  • Reliable store

    Have ordered multiple times, always received exactly what was described. Products are genuine and fully functional.

    Casey Brown
    Denver, Colorado

  • User-friendly website

    Easy to navigate and make purchases. A hassle-free shopping experience with clear descriptions and transparent pricing.

    Riley Wilson
    Boston, Massachusetts

  • Smooth checkout

    Checkout was quick and straightforward. My order confirmation came through instantly, and everything arrived exactly as expected.

    Morgan Lee
    Portland, Oregon

  • Great value

    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

    Jamie Carter
    Manchester, England

Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.