NGK 6619 Iridium Spark Plug Complete Review

You know that spark plug is one of the critical components of your vehicle motor. You aware that there are so many options available when it comes to purchasing spark plugs. With so many options, you won’t be sure which brand to go with.

But you do your research and decide to purchase the NGK 6619 Iridium Spark Plug. You want a detailed review about this particular product.

If it is the case, then you’ve come to the right place!

In this post, we are going to dive deep into the review of the NGK 6619 Iridium Spark Plug, benefits of investing in a quality iridium spark plug and more.

So without anymore delay, let’s jump into it!

Benefits of Investing in a Quality Iridium Spark Plug

It is important to know the benefits of investing in a quality iridium spark plug. This will actually let you take an informed decision when it comes to purchasing.

Here’s the list of benefits you’ll get.

  • Spark plugs that are made of iridium are way more stronger than the one that is manufactured with other material such as copper or platinum.
  • Iridium has high-melting point, and hence produces grate electrodes without losing its fine characteristics.
  • It gives you supreme quality performance.
  • They also produce a significantly higher combustion and lasts for a long time.
  • You don’t have to change the iridium spark plug frequently.
  • It improves the overall acceleration of your vehicle.
  • You’ll get higher engine power.
  • You don’t have to deal with jerky start when you use a spark plug.
  • It improves fuel utilization.

Now that you know the benefits of investing in a quality iridium spark plug, it’s time that we start reviewing the NGK 6619 Iridium Spark Plug.

Related: 10 Best Spark Plugs Review

Review of the NGK 6619 Iridium Spark Plug

The core material that is used to manufacture this spark plug is iridium. It gives long lifespan to the motor of your vehicle.

NGK 6619 Iridium Spark Plug Complete Review

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NGK 6619 Iridium Spark Plug is specifically designed to function at a wider heat range. So even if it heats up considerably, you won’t experience any difference in performance. It is simply great than ordinary spark plugs.

The NGK 6619 Iridium Spark Plug resist against carbon buildup and pre-ignition. What it means is that you’ll get smooth start for a long time.

Carbon buildup is the main reason for jerky starts. And overtime, it reduces the capacity of your vehicle’s motor to perform at its best.

The patented triple gasket sealing process protects combustion gas leakage. When you purchase this spark plug, you’ll get 6 pieces in the package.

This brand has been in the spark plug manufacturing for several years and as we’ve mentioned, the NGK 6619 Iridium Spark Plug is top notch in every front. Apart from its supreme quality performance, it is powerful, highly-efficient and it is reliable as well.

There is very less chance that it misfires or malfunctions thanks to its supreme build quality. It is designed attractively and you don’t have to put in much effort to install it.

Spark plugs that are manufactured with iridium material usually have a longer lifespan than its counterparts and this NGK 6619 Iridium Spark Plug is no exception. When you start your vehicle, you’ll experience a smooth start at all times and although it is on the pricier side of the spectrum, every penny you spend for this spark plug is absolutely worth it.

Along with the smooth start, the vibration won’t be too jerky.

This spark plug fits fine into its place and even if you are installing a spark plug for the first time, you’ll find it much easier to do so.

You don’t have to be in any doubt that it is a great product. Even if you’ve had bad experience previously with spark plugs, purchasing this one will fulfil all your requirements.

So if you are looking to purchase a spark plug that adds significant value to your money and fulfils all the promises by the manufacturer, then this is going to be your best bet.


We are confident that our review of the NGK 6619 Iridium Spark Plug would have cleared all your doubts. As you already know, iridium spark plugs are the pricier of the lot and keep your needs in mind before you splurge your hard earned money.

Want to include your thoughts about this guide? Put them in the comments section below. We love to hear from you!

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Julia Carpenter
She graduated with a Bachelor of Arts (B.A.) and A.B.J. in Journalism from the University of Georgia. She has 13 years of experience in content writing. She writes about money, finance & science-related articles. Her articles have been featured in popular magazines like CNN, Vogue & ELLE.


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