Top 10 Best Spark Plugs [2020]

Whether small or simple as it sounds, spark plugs play an extremely important role in your engine. These spike-like components work by creating a small electrical spark between the center electrode and the ground electrode.

This small spark ignites the air-fuel mixture in the engine’s combustion chamber. Therefore, without these lower parts, there would be no burnout in the engine, which means your car won’t even start.

Spark plugs wear out over time. This means that its efficiency deteriorates over time, leading to problems such as acceleration, misfire, cold start, and other engine problems.

To avoid some of these problems and to always ensure the best engine performance, a regular inspection is essential to have them replaced as soon as possible.

Amazingly, even with the vital role of spark plugs, its price is quite weakly demanding. But make no mistake – the low price doesn’t mean you don’t have to pay attention to the spark plug you bought for your car.

To make the perfect choice easier, we’ve rounded up some of the best-performing options.

10 best spark plugs

1 NGK 7090 BKR5EGP G-Power Spark Plug

NGK 7090 BKR5EGP G-Power spark plug

NGK 7090 BKR5EGP G-Power Spark Plug

First place on the list goes to the premium quality NGK spark plug. They are available in 1 pack, although we offer 4 packs as they offer a lower cost per unit than 4 plugs purchased separately.

This spark plug kit is an option designed to provide the best performance. I mean, upgrading to this kit will notice faster starting, better fuel economy, and less emissions.

For lasting performance, a soft platinum tip is welded to the middle electrode tip. The ground electrode is also made of platinum alloy to increase durability and ensure that a fine gap is maintained throughout the life of the plug.

The 0.6mm platinum disc requires less effort than the wider ends. So if you are looking for an efficient spark plug, then our first choice on the list should be excellent.

The trivalent metal coating protects the fastening from corrosion. Therefore, this option is one of the spark plugs that do not cause any difficulty when they are replaced.

We also love that these spark plugs have a triple seal. The three seals create a tighter seal that prevents air from escaping from the combustion chamber for best performance.


  • They are very easy to install.
  • They have an anti-corrosion coating.
  • They have a minute gap.


They do not offer the best compatibility.

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2 Champion RC12YC Spark Plug

Spark Plug RC12YC Champion

Champion RC12YC Spark Plug

Spark plugs are an essential part of not only your car but also other machines such as mowers and other lawn equipment. Working well with garden equipment has a direct impact on productivity.

Now, if you’re striving to use the perfect unit for your garden equipment, here’s an option you should consider. That’s why we have an affordable 1-pack.

The Champion RC12YC spark plug is designed to start faster. This plug increases efficiency, making it an option if you’re looking for a way to improve fuel economy.

The permanently manufactured spark plug has a copper central electrode that precisely regulates the heat range over a long period of time. The ultrasonic coating provides better protection against corrosion.

This small but essential part has been designed to meet the requirements of ISO and SAE standards. Therefore, it is one of the spark plugs you can buy with the knowledge that it provides proven performance.


  • Easy to turn on and off.
  • The construction is great.
  • Provides a quick start.


  • Comes in a pack of 1.

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3 E3 Power sports spark plug in each

E3 Power Sport spark plug

This spark plug comes from one of the most reputable manufacturers in the industry. So before we dig deeper, we expect it to perform better and last longer than most competing models.

The product comes in a 1-piece package. It works well for boats, ATVs, jets, trucks, chainsaws, cars, snowmobiles and other machines that require a proper plug.

The advanced level of engineering makes it an outstanding position in the market. An example is E3 DiamondFire technology. This innovation is evident in the design of the super electrode.

Unlike traditional options whose design overlaps the flame core, this high quality spark plug has an open end for full combustion.

In other words, the higher pressure caused by the spark of this plug leads to the cylinder. The added pressure increases fuel combustion and provides better fuel economy with higher horsepower.

The higher combustion provided by E3 DiamondFire technology in each engine also reduces emissions from gasoline engines, resulting in lower carbon footprint and lower greenhouse effect.


  • Provides more complete fuel combustion.
  • It has very wide compatibility.
  • E3 DiamondFire technology is a plus.


  • The size is very small.

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4 Denso (3297) SK20R11 Iridium Spark Spark

Denso (3297) SK20R11 iridium ignition box

Denso (3297) SK20R11 Iridium Spark Plug

If you use copper or platinum spark plugs, you may want to consider saving a few dollars to upgrade to iridium spark plugs. It is by far the best performing spark plugs on the market and will provide you with a long term package.

Iridium is 6 times harder than platinum and up to 8 times stronger. However, unlike copper and platinum electrodes, which wear out over time, the iridium electrode used in this plug retains its original condition for a very long time.

Therefore, we consider this spark plug to be an ideal choice for colleagues who spend most of their time on the road or for car owners who want the longest lasting unit.

The diameter of the irode-tip center electrode is only 0.7 mm. The reduced diameter of the electrode in the middle increases combustion efficiency, making a high-quality spark plug an ideal choice for car owners who want a combination of efficiency and high performance.

The seal is designed to provide a complete seal to prevent leakage. The wire has a 14 mm thread and a 16 mm hexagon size. The product has a 0.44-inch gap that varies to about 1.1 mm.


  • Very durable.
  • It provides high efficiency.
  • Provides better acceleration.


  • Slightly more expensive than copper and platinum options.

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5 NGK Iridium IX DCPR7EIX Spark Plugs (Pair)

Spark plugs NGK Iridium IX DCPR7EIX

NGK Iridium IX DCPR7EIX Spark Plugs

Our next choice on the list has a good reputation in the automotive industry. Therefore, they use the latest technology in their design to deliver performance that is not disappointing.

Most impressive is that the pair also falls into the category of iridium spark plugs. Therefore, it provides extremely robust and long-term performance, just like the previous option.

Although very durable, the spark plug electrode of NGK Iridium IX DCPR7EIX is only 0.75 for platinum electrodes and only 0.25 for conventional nickel electrodes.

The ultra-small diameter reduces the voltage requirement while improving the life of the ignition system. Therefore, you also get a combination of efficiency and durability in this pair.

This futuristic metal casing provides the product with advanced anti-corrosion properties. Unlike some models that cause wear over time, this spark plug retains its beauty throughout its life.


  • They will improve the MPG.
  • The metal casing prevents advanced corrosion protection.
  • They come as husbands.


  • They do not work on some models.

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6 NGK 5464 BKR5EIX-11 Iridium IX spoke

NGK 5464 BKR5EIX-11 Iridium IX spokes

NGK 5464 BKR5EIX-11 Iridium IX Spark Plug

NGK 5464 BKR5EIX-11 is another option that will not disappoint you in everything you have done. The package has 4 spark plugs and offers a plug at a better price than its previous caliber options.

High quality spark plugs are among the most compatible options. I mean, you can use these connectors on most vehicles, including high-performance cars and SUVs where fast acceleration is needed.

The iridium alloy is stiffer than other available designs and has a high melting point. However, this spark plug has an incredibly long life in terms of heating and electrical corrosion.

The soft iridium tip is only 0.6mm wide to provide high efficiency and a more stable spark with most of the options available. The ground electrode design provides less flame height interference for total fuel consumption.

The trivalent metal paint has anti-caking properties, making it easy to remove. This coating also provides excellent wear protection for durability.

These spark plugs also have a longer insulating nose. This feature reduces contamination while the corrugated ribs provide additional protection against secondary voltage or flash.


  • The builder’s high melting point is a plus.
  • The ground electrode is well thought out.
  • The four sockets are a good number.


  • It can be difficult to detect a change in mileage.

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7 Champion RER8ZWYCB4 (9407) Iridium replacement candle

Iridium replacement burning wax (9407) champion RER8ZWYCB4

This spark plug is designed to be compatible with all types of engines and ignition systems. It works well with cars, Powersports apps, light trucks and more.

Champion RER8ZWYCB4 (9407) Iridium Replacement Spark Plug

This spark plug is designed to be compatible with all types of engines and ignition systems. It works well with cars, Powersports apps, light trucks and more.

So, whether you use a Honda, a Mitsubishi, a Volkswagen, a Jeep, a Porsche, an Audi, a Dodge, or any other vehicle that requires a high-performance spark plug, you probably won’t make a mistake with this model.

The central electrode of the iridium wire is accurate, while the grounded electrode uses a platinum structure. So, if you want a candle that provides maximum life, injecting this option will not disappoint.

The exceptional ground electrode design provides sharper spark focus for more impressive performance and faster throttle response not available in other markets.

The product is easy to install for anyone. However, this may require a little patience. In addition, the manufacturer warns you to avoid over-tightening as you may remove the thread that is causing the problem.


  • Supports the use of all engines and ignition systems.
  • Provides faster gas delivery.
  • It is designed to focus on a sharper spark.


  • Installation requires a little patience.

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8 Bosch Automotive 9612 Iridium OE replacement spark plug

Bosch Automotive 9612 Double Iridium OE spare burner

Bosch Automotive 9612 Double Iridium OE Replacement Spark Plug

Improve your car’s engine performance when you enjoy the best fuel economy with a high-quality spark plug. It comes from Bosch, a German manufacturer with a very good reputation for transporting high-performance equipment.

The needle of this unit uses double iridium. Its durable structure is four times stronger than copper, so it offers you the best value for money.

The unit is designed with advanced OE spark plug technology, which is one of the main reasons for its excellent performance. For this reason, this spark plug is one of the best-selling options on the market.

The extensive geometry used in the ultra-fine wire provides incredible flammability and performance while reducing the effort required to maintain the highest possible level of combustion efficiency.

The housing is nickel-plated to protect against corrosion and increase the durability of spark plugs. In addition, this small accessory has ribbed insulation to help eliminate flashes.

It provides great compatibility and will work with the 01-06 Chevrolet Silverado 2500 HD, 07 Chevrolet Silverado 2500 HD Classic, 87-93 Chevrolet Corsica, 06-11 Chevrolet Impala and more.


  • Available in packs of 1, 4 and 10.
  • It provides up to four times the durability of copper plugs.
  • Most cars do not require a gap.


  • This is not the cheapest option on the list.

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9 Toyota Genuine Parts 90919-01235 Spark Plug

Toyota original parts 90919-01235 Bwage

Toyota Genuine Parts 90919-01235 Spark Plug

Because of something that simply needs to be forgotten and forgotten, like spark plugs, it is sometimes wise to direct your money to an original OEM product rather than experimenting with aftermarket options that may not meet your car’s requirements.

If you have a Toyota model, this is where the original spark plug comes in. The plug comes from the original car manufacturer, so you can be sure to buy it to be properly tuned to meet the requirements of your individual vehicle.

The spark plug promises an impressive lifespan of 60,000 miles. So this Toyota genuine part is one of the options that needs to be installed and forgotten without any problems in your life.

And the strong frame of this high-performance ignition socket also withstands extreme heat consumption, without cracking, as a few options. Durable metal frame prevents corrosion.

Finally, we love that this unit is easy to install. So even if you haven’t installed one yet, the task is very easy to do here as it has all the necessary tools.


  • Accurate OEM product.
  • It takes a very long time.
  • The installation is windy.


  • This is very expensive.

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10 AD car part new motorcycle (SP515) spark plug

AD Car Parts New Motorcycle (SP515) Spark Plug

AD Auto Parts New Motorcraft (SP515) Spark Plug

For those who drive Ford cars, these spark plugs are an ideal alternative. Highly recommended by Ford factory and other leading engineers in the industry.

However, apart from Ford cars, this quality spark plug works perfectly with both Lincoln and Mercury cars. Amazing performance, reliability and excellent quality set this apart in the market.

The platinum construction provides more durable performance than copper plugs. Therefore, if you do not want to replace the spark plugs at any time, this kit should be a great choice and can fill up to 100,000 miles.

The melting point of the premium platinum construction is higher than that of copper. The more rigid construction ensures that it provides more stable performance while traveling.

Lastly, I like that these spark plugs have high wear resistance, which retains their original condition for a long time. It is also available in a cost-effective 8-plug package at a lower price than the 8-plug of its caliber.


  • The packaging is beautiful.
  • Its lifespan of 100,000 miles is impressive.
  • The plugs are well fitted.


  • 8 units can be more than you need.

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Frequently Asked Questions

Are iridium spark plugs better than platinum?

Iridium is stronger and stronger than iridium. Therefore, iridium spark plugs perform better than platinum options in terms of durability. Iridium also contains incredibly accurate electrodes to improve efficiency. However, the platinum versions also perform impressively and are cheaper than iridium.

How long do Iridium plugs last?

Although durability may vary depending on other substrate characteristics, most iridium models have a lifespan of approximately 80,000 miles.

Should I use original spark plugs?

Provided the aftermarket option you want to buy is the same as your vehicle, it doesn’t hurt to choose. In fact, cheaper than the original parts. However, if you’re not sure about compatibility, it’s always worth paying an extra dollar for an OEM product.

Can my car run better with my new spark plugs?

Yes. The new plugs restore fuel economy, reduce (or eliminate) imbalances, facilitate quick start-ups, reduce carbon deposits and toxic gas emissions, among many other benefits.

However, the level at which you can enjoy these benefits depends on what you choose.

How do I know if the spark plugs need to be replaced?

There are several signs that the spark plug needs to be changed. Some common things include: Poor acceleration, increased fuel consumption, engine start, misfire, unpleasant morning start, and so on.

Final judgment

Even with so many great models, some spark plugs work better than others. Therefore, it is wise to pay attention to the spark plugs you buy for your car.

Our list suggests the best performing options on the market. However, since not everything guarantees compatibility with your vehicle, be sure to select the vehicle that matches the order of your vehicle.

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