How to Choose the Best Iridium Spark Plugs 2018 - Buyer’s Guide

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Best Iridium Spark Plugs
Finding the iridium spark plugs that will suit you the most is not an easy thing to do. Nowadays, there are hundreds of manufacturers that offer many iridium spark plugs for any taste. We decided to help you choose the right iridium spark plugs for you and created this rating list with the best options.

Wondering, how we created this list? It was pretty hard: we had to compare hundreds of various iridium spark plugs. We took into consideration all the important characteristics, such as price, average user score, weight, and many more. If we think that we missed something, let us know about it!

6 Best Iridium Spark Plugs of 2018

Rating Image Name and Features Details
5.0
Ngk 7397 Tr5ix Iridium Ix Spark Plug 1. Ngk 7397 Tr5ix Iridium Ix Spark Plug (Editor’s Choice)
The 0.6mm laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect.
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4.5
Ngk 5464 Bkr5eix-11 Iridium Ix Spark Plug 2. Ngk 5464 Bkr5eix-11 Iridium Ix Spark Plug
The 0.6 millimeter laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect.
Read reviews
4.3
Acdelco 41-110 Oem Gm 12621258 Professional Iridium Spark Plug 3. Acdelco 41-110 Oem Gm 12621258 Professional Iridium Spark Plug (Best Versatility Features)
Improved cold-starting and acceleration characteristics.
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4.3
Hivehicle Iridium Spark Plug 4. Hivehicle Iridium Spark Plug
Updated design reduce the risk of breaking off during working.
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4.0
6 New Ngk Iridium Ix Spark Plugs 5. 6 New Ngk Iridium Ix Spark Plugs
Plugs feature a fine-wire iridium center electrode and nickel-alloy ground electrodes for maximum engine horsepower and torque.
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3.5
6 Pcs Denso Iridium Long Life Spark Plugs 6. 6 Pcs Denso Iridium Long Life Spark Plugs
Uses the same high performance laser welding process as the high end iridium power spark plug.
Read reviews

 

 

 
 

Design
5/5
 

Versatility
5/5
 

Performance
5/5
 

Price
5/5
 
Overall Brand Model Dimensions Weight Details
5.0
NGK 7397-4PK 4.1 x 3.5 x 1 inches 2.4 ounces
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Trivalent metal plating – superior anti-corrosion and anti-seizing properties. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today’s high-performance engines. Designed specifically for the performance enthusiast, iridium ix offers extreme ignitability, improved throttle response and superior anti fouling. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage. The 0.6mm laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect.

 

 
The Good
Longer insulator nose prevents fouling
Designed specifically
Trivalent metal plating
The 0.6mm laser welded fine iridium tip ensures high durability
Iridium alloy has extremely high melting point
The Bad
Not a single flaw!
 

 

 
 

Design
5/5
 

Versatility
5/5
 

Performance
4/5
 

Price
4/5
 
Overall Brand Model Dimensions Weight Details
4.5
NGK 5464-4PK 3.4 x 0.8 x 0.7 inches 6.4 ounces
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Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage. The 0.6 millimeter laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today’s high performance engines. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties; part number of spark plug inside the box: bkr5eix-11.

Designed specifically for the performance enthusiast, iridium ix offers extreme ignitability, improved throttle response and superior anti-fouling.

 

 
The Good
Iridium alloy has extremely high melting point
Trivalent metal plating provides superior anti-corrosion
Designed specifically
Longer insulator nose prevents fouling
The Bad
It weighs a ton!
It is too expensive for what you get.
 

How did you make the list of the best iridium spark plugs?

In order to create this buying guide, our team had to go through hundreds of user reviews and compare dozens of iridium spark plugs models and brands. Finding the best iridium spark plugs nowadays is a hard task: the selection on the market is so high that you would have to spend months to study all available options. Thankfully, our TOP list will help you find a good iridium spark plugs much quicker!

 

 
 

Design
5/5
 

Versatility
4/5
 

Performance
3/5
 

Price
5/5
 
Overall Brand Model Dimensions Weight Details
4.3
ACDelco 6 x 2 x 8 inches 12.8 ounces
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Improved cold-starting and acceleration characteristics. Reduced ignition system voltage demands saves wear and tear. Latest evolution in high-performance plug electrode material and new-vehicle applications using iridium plugs continues to increase. Acdelco is an original equipment (oe) supplier and has the experience engineering and manufacturing components that achieve the highest quality standards required by vehicle manufacturers. Iridium tip for maximum resistance to spark erosion and corrosive combustion chamber environment. Spark gap remains virtually unchanged during the life of the plug for increased fuel efficiency and 12-month/12.000-mile limited warranty.

 

 
The Good
Latest evolution in high-performance plug electrode material
Improved cold-starting
Acdelco is an original equipment
Iridium tip
Spark gap remains virtually unchanged during
The Bad
It quickly becomes rusty.
 

 

 
№ 4. Hivehicle Iridium Spark Plug 41-110 Pack of 8, for Chevy Gmc Cadillac Buick
 

Design
5/5
 

Versatility
4/5
 

Performance
5/5
 

Price
3/5
 
Overall Brand Model Dimensions Weight Details
4.3
HiVehicle 13.6 ounces
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High quality material: purified alumina powder insulator from germany almatis(model: hva fg q0 and full-automatic isopressing; iron shell(model: 20 08 al) and automatic welding/rolling bending; central electrode(99% nickel clad copper ) and 360 degree laser welding iridium & platinum. Reduce the risk: updated design reduce the risk of breaking off during working. Increases fuel efficiency: g-power platinum alloy spark plugs offer superior performance with improved fuel efficiency, lower emissions, and quicker starts. Increased conductivity: increased conductivity and heat control for good overall. Stability: 0.6mm laser welded fine platinum tip reduces required voltage ensuring high durability and a consistently stable spark.

Durability: trivalent metal plating offers superior anti corrosion and anti seizing properties while the triple gasket seal eliminates combustion gas leakage.

 

 
The Good
Increased conductivity
Increases fuel efficiency
High quality material
The Bad
May be expensive for some people.
 

Are new iridium spark plugssupposed to be expensive?

Obviously, a good iridium spark plugs cannot be very cheap. If you want to buy a decent product, you should not be trying to save money on it. We recommend you to order the best models from our list of the best iridium spark plugsif you can afford it.

 

 
№ 5. 6 New Ngk Iridium Ix Spark Plugs Bkr5eix-11 5464
 

Design
5/5
 

Versatility
3/5
 

Performance
4/5
 

Price
4/5
 
Overall Brand Model Dimensions Weight Details
4.0
NGK 5464 10.4 ounces
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Trivalent metal plating has superior anti-corrosion and anti-seizing properties. Designed for fuel-injected and turbocharged engines. Plugs feature a fine-wire iridium center electrode and nickel-alloy ground electrodes for maximum engine horsepower and torque. Precision laser-welded electrode construction. Extreme performance upgrade over oem spark plugs and provide a 40.000 to 50.000 mile service life.

 

 
The Good
Plugs feature a fine-wire iridium center electrode
Extreme performance upgrade over oem spark plugs
Trivalent metal plating has superior anti-corrosion
Precision laser-welded electrode construction
The Bad
The material is not flexible, so it is easy to break.
 

 

 
№ 6. 6 Pcs Denso Iridium Long Life Spark Plugs for 2008-2013 Infiniti G37 3.7l V6
 

Design
5/5
 

Versatility
5/5
 

Performance
2/5
 

Price
2/5
 
Overall Brand Model Dimensions Weight Details
3.5
Sixity Auto 11.5 ounces
Check Price

Improve engine horsepower and fuel economy over standard plugs. The same plugs factory-installed on luxury vehicles by automakers such as gm, toyota, honda and mitsubishi. Uses the same high performance laser welding process as the high end iridium power spark plug. Endures extreme temperatures greater than 4.000f associated with high-performance ignition and special fuel systems. Iridium is the most corrosion-resistant metal used in plugs today.

 

 
The Good
Endures extreme temperatures greater than 4.000f associated
Improve engine horsepower
The Bad
It is too heavy for regular use.
It works well, but the price matches the quality — it is very high.
 

I am wondering if buying a iridium spark plugs online is safe

Why there should be any reasons to worry? There are no risks in buying iridium spark plugson the internet, sine you can always get a refund. You can also check the reputation of a seller just to be sure that your iridium spark plugs will be delivered without any problems.

What if a receive a wrong item instead of the iridium spark plugs I ordered?

If you were unlucky enough to get a wrong or broken product, use electronic mail or international telephone to contact the customer support team. They will help you to return your money or get the right iridium spark plugs.

How to get a refund for a iridium spark plugs?

If you receive a wrong or a broken iridium spark plugs, seller will oblige the seller to return your money or send you a replacement. There is no need to worry about refunds anymore thanks to the amazing customer-friendly policy!

What warranty period is considered optimal for iridium spark plugs?

In the most cases, two-year long warranty period is considered as optimal for iridium spark plugs. iridium spark plugshave a tendency to lose their quality with time. Replacing old iridium spark plugswith a new model is a much better option than an overpriced lifetime warranty.

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My name is Ron Hughes and I am a Electronic Solderer. I graduated from Clark University - Worcester, Massachusetts

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