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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: 4469|
  • SKU: 286361

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    • Fine tipped Iridium center electrode ensures high durability and a consistently stable spark
    • Iridium alloy has an extremely high melting point, perfect for today's high-performance engines
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NGK Iridium IX Spark Plug

NGK Iridium IX spark plugs provide the best ignitablity in a single precious metal spark plug. Iridium IX plugs are best suited for high performance and modified engines which may require a colder heat range. Refer to NGK catalog for more information on selecting the correct Iridium IX spark plug
  • Fine tipped Iridium center electrode ensures high durability and a consistently stable spark
  • Iridium alloy has an extremely high melting point, perfect for today's high-performance engines
  • Trivalent metal plating has superior anti-corrosion and anti-seizing properties
  • Taper-cut ground electrode is designed to open up more area for flame expansion reducing the quenching effect
When you require the best, count on The World Leader in spark plug technology NGK Spark Plugs. We offer the highest quality products for virtually every vehicle application. Count on NGK Spark Plugs to deliver the finest quality products and customer service.

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NGK Iridium IX Spark Plug is rated 4.6 out of 5 by 14.
Rated 5 out of 5 by from Really good This plugs are my two ix that i bought, they give me quality and power God bless you!
Date published: 2014-12-24
Rated 5 out of 5 by from Love my lift supports Easy to install
Date published: 2014-03-02
Rated 4 out of 5 by from GOOD PLUGS These NGK spark plugs are factory recommended for my Hyundai Accent. I haven't noticed any difference in mileage (in fact, mileage has slightly decreased, but that's probably because computer hasn't adjusted to the new spark plugs yet). I took the old NGK Iridium plugs out of my car at 68,000 miles and they still looked pretty good. Car peppier and smoother with new spark plugs of course. With such an expensive part like an engine, I stick to factory-recommended plugs.
Date published: 2014-02-18
Rated 4 out of 5 by from FACTORY SPARK PLUGS These are factory NGK spark plugs for my 2009 Hyundai Elantra. Engines are expensive, so I like to stick with factory whenever I can. The model is slightly different than factory, and mileage went slightly down (almost not noticeable), but the engine is much smoother and peppier now. Good for another 50,000 or 60,000 miles now.
Date published: 2014-02-13
Rated 5 out of 5 by from excelent and powerful spark plugs A excelent product and great price
Date published: 2013-12-26
Rated 5 out of 5 by from Plugs were fine and arrived fast Rec'd set of sparkplugs in 2 days from order. Car is happy.
Date published: 2013-10-21
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