denso spark plug review

We all use vehicles to move from one place to another. We even sometimes take it for granted.

We don’t realize what is happening that propels our vehicle to function. But here’s an important aspect to note.

It takes many parts working together to make the vehicle motor work. And here’s one more critical fact. A small yet crucial vehicle part called spark plug organizes everything together simultaneously and lets the motor function.

It is a device that produces electric current and ignites the combustion room of the engine. So for your motor to perform at its fullest, you need to have a quality spark plug installed into it.

Hence, if you are looking for a long lifespan spark plug that is supreme quality, you don’t have to go far as we have a perfect solution for you.

In this post, we are going to have a closer look at the complete review of the Denso #3324 Iridium LONG LIFE Spark Plug, what are the benefits of using a quality spark plug for your vehicle motor and much more.

So without wasting much time, let’s just get into it!

Read also: 10 Best Spark Plugs (For High Mileage & Good performance)

Benefits of Using a Quality Spark Plug for Your Vehicle Motor

Before we begin reviewing the Denso # 3324 Iridium LONG LIFE Spark Plug, you need to know about the benefits of a quality spark plug. When you have this knowledge and if a situation comes where you need to replace your spark plug, you wouldn’t think twice and do it immediately.

Having said that, here’s a list of benefits you get when you have a quality spark plug in your vehicle motor.

  • There will be optimum combustion production: A quality spark plug gives you optimum combustion production at all times. If optimum combustion is produced, you don’t experience performance related issues at all.
  • You’ll get smooth start: When you turn on the ignition of your vehicle with a new spark plug installed, you’ll experience significant difference. There is no need to deal with jerky or difficult starts anymore.
  • There will be more fuel efficiency: Misfiring spark plug is a serious hazard for your engines to utilize the fuel efficiently. When you use a quality spark plug installed in the vehicle motor, the fuel utilization gets increased significantly and in the long run, you save some money.

Now that you know the benefits, let’s get straight into reviewing the Denso # 3324 Iridium LONG LIFE Spark Plug.

Related: What Are the Signs of Bad Spark Plugs?

Review of the Denso # 3324 Iridium LONG LIFE Spark Plug

denso spark plug review

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The first thing to note with this spark plug is that it is manufactured with iridium. There are several benefits you’ll get when you purchase a spark plug that is made of this material.

Spark plugs built with iridium are seriously harder and stronger than its counterparts. With a 700 degrees melting point, there is no chance of misfiring.

They can also last for a longer lifespan.

The above mentioned characteristics fit perfectly for the Denso # 3324 Iridium LONG LIFE Spark Plug.

Denso is one of the largest automotive parts supplier and they supply quality products around the globe. They have been in this industry for over 65 years, and the parts that are manufactured by this manufacturer are supreme in quality.

So there is no need to worry when you plan to purchase the Denso # 3324 Iridium LONG LIFE Spark Plug.

You can easily install it and if you are changing the spark plug for the first time, you don’t find it difficult to do so thanks to the crystal clear instructions.

This spark plug is highly reliable as it is QS9000 and ISO9000 certified. It comes from a first time fit product line.

There is lot more value for your money and you can purchase it with absolute confidence.

The only aspect that is bit off putting is the fact that you have to pay a premium to get it. But if you want to get a spark plug that is long lasting, then we guess it won’t be an issue.

Related: How often to change the spark plug


We hope that our guide about the Denso #3324 Iridium LONG LIFE Spark Plug would have answered all your questions. As we’ve mentioned earlier, iridium based spark plugs comes under the costlier price range. So if you already have an iridium spark plug installed, change it if and when it is absolutely necessary.

Want to give us feedback about this guide? Write away in the comments section below!

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Lara Herrington
With over 12 years of experience, she is a proficient content writer and editor specializing in a diverse range of subjects, including technology news, country news, arts, science, travel, and automobiles.


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