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NGK Iridium IX Spark Plug - LZTR4AIX-11

SKU: A9329909

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  • NGK's IX Iridium series plugs were designed specifically for the performance enthusiast
  • Fine wire center electrode ensures high durability and a consistently stable spark
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
  • Corrugated ribs prevent flashover
  • Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
  • Copper core aids in heat removal
  • Triple seals prevent leakage
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Don't just use any spark plug, insist on using a iridium IX NGK LZTR4AIX-11 spark plug

Although they come in at a higher price than standard, iridium NGK Spark Plugs offer a longer service life than a standard nickel-tipped spark plug. While you're investing more money in your spark plugs initially, you won't need to change them as often and can even save money in the long run on further spark plug replacements and servicing costs. While nickel alloy spark plugs offer a service life of anywhere from 20,000-40,000kms, NGK Iridium IX spark plugs offer a service life of up to 60,000kms. Precious metal spark plugs like the NGK Iridium IX also offer higher ignitibility which is achieved by using an exposed fine tip centre electrode which promotes superior flame growth when compared to a standard spark plug. Precious metals such as iridium also have a much higher melting point (2410 degrees Celsius) than traditional metals such as nickel (1453 degree Celsius). The higher melting point allows the centre electrode diameter to be reduced in size from 2.5mm to 0.6mm resulting in a flame kernel which doesn't have a large mass of centre electrode. The larger centre electrode of traditional spark plugs impedes the flame progress and hampers acceleration, fuel consumption and idle quality. This means that with a precious metal spark plug, your car will perform better across the board. For a more in-depth break down on NGK Spark Plugs, head over to our Understand Spark Plugs page.

With over 80 years of experience NGK are not just the world largest manufacturer of spark plugs but also at the forefront of modern spark plug technology. Every spark plug in their extensive range has been designed to not just match or exceed the manufacturers specifications but has been tailored to suit the individual engine application. This all leads to NGK being the right choice of spark plug for your vehicle in whatever environment you operate in. Whether scaling outback dunes in your 4wd, cruising the street in your performance or classic car or just making the run to the shops and back, NGK spark plugs have the quality and reliability you can rely on to maximise your vehicles performance. Through their innovative design and use of precious metals such as iridium spark plugs and platinum spark plugs contribute to improved fuel consumption and acceleration as well as smoother idling when used in your vehicle.

Installation Instructions for your new NGK Spark Plug:

  • Confirm with manufacturers specifications on the thread reach of the spark plug
  • Clean surface around gasket seat / spark plug hole to remove any dirt
  • Insert spark plug and tighten until finger tight and the gasket touches the cylinder head
  • Use a Spark Plug Wrench or correct spark plug socket to then tighten a further half to two-thirds of a turn to fully seat your NGK spark plug (Conical seat plugs require a further 1/16th turn)

Use our online rego search tool to find the right NGK Spark plug for your vehicle and simply purchase online or come into a store using our click and collect service. When it comes to improving your vehicle install NGK spark plugs and feel the difference in every drive.

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