Spark plugs are a lesser-known object to general people. What this equipment do is they light up any mixture of air and fuel. They transmit electricity to combustion chambers. Although this device might seem like a very complicated and intricate object; these are simple and small. They are also the creators of lightning bolts in any combustion chamber. There are different types of spark plugs as well. Hot spark plugs and cold spark plugs are two of these types. These plugs act as lighters. In order to find the best spark plugs; you need to consider the voltage, type, build, and performance of the best spark plugs.

It is crucial to find a good quality spark plug for your garage. As these work with firing and lighting up; hazardous accidents might happen easily. Read on to check out our choice of the most excellent and best spark plugs.

Top 10 Spark Plugs in 2020

10. Denso Iridium Spark Plug

Denso Iridium Spark Plug

If you are looking for a durable and long-lasting spark plug; this is the one for you. The plug is made of premium quality best spark plugs materials. Iridium is 6X harder than platinum; it is 8X more durable as well. The diameter in this spark plug is 4mm. It has a hex size of 16mm along with a reach of 19mm. This plug is versatile in usage; you can use it on most vehicles. The Denso 3297 model of spark plug has a robust design. It will certainly make your engine more efficient and does not cause fouling.

9. NGK Iridium Spark Plugs

NGK Iridium Spark Plugs

One of the best spark plugs in the market. This product comes in a pack of several spark plugs. It is very rare to find spark plugs in a pack of many; they are generally sold in one piece. If you are a mechanic; this is a great choice for you. As you have to work with many vehicles; buying more spark plugs in a pack than one individually is cost-effective.

These plugs have a 25% more lasting life than the regular spark plugs. The electrodes in this plug are thin threads which makes it more efficient as well.

8. NGK V-Power Spark Plug

NGK V-Power Spark Plug

Another product from NGK. We will be mentioning this brand many times on the list; they are a reputed company in the best spark plugs industry. This particular model has an efficiently designed electrode. The electrode has a notch. The spark it creates gives vehicles better mileage and engines perform better as well. This plug also has great plating which makes it corrosion resistant and seizing- resistant. The plug is very affordable and great for both personal and garage use. It does not require much maintenance either.

7. NGK Iridium IX Spark Plug

NGK Iridium IX Spark Plug

Suitable for most vehicles; this is one of the best spark plugs that really make engines better. Most spark plugs are suitable for passenger cars and cars we usually use. These IX spark plugs from NGK are suitable for heavy-duty vehicles as well. It has a thread of 0.6mm and with a tip of iridium. The electrode is the tapered ground type which prevents the quenching of electricity. The long insulator nose ensures no fouling in your engine. It is a very affordable and durable spark plug.

6. Bosch 4417 Platinum Spark Plug

Bosch 4417 Platinum Spark Plug

According to statistics; every 3 car in America has a Bosch manufactured part in it. The company is very widespread and promises excellent quality materials. You can blindly believe that they make the best spark plug. The electrodes are made of four yttrium and platinum. Yttrium in the electrodes prevents the oxidization of the materials. These plugs will certainly improve the performance of your engine and make your vehicle run like a new one.

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5. NGK G-Power Spark Plug

NGK G-Power Spark Plug

The 7090 plugs from NGK promise the longevity of your engine and put a pause on its fouling. The thread of this plug is 0.6mm and made of platinum alloy. The alloy makes a better spark. These spark plugs also lower electrode wear. Any debris and pollutants do not enter engines if you are using these plugs. These are the best spark plugs you can get at a very affordable price.

4. Bosch 9652 Spark Plug

Bosch 9652 Spark Plug

This high-quality spark plug has a double iridium electrode. As mentioned before, iridium is a stronger and more powerful metal than platinum. It is stronger than copper as well. This spark plug has a corrugated insulator nose. The pre-gap is set in a factory that makes changing spark plugs very simple and quick. It is recommended to change the plugs after every 100,000 miles of usage.

Bosch is a popular company. Their replicas are available in the market. So you need to be careful while buying Bosch products.

3. Champion Copper Plus

Champion Copper Plus

These are one of the best spark plugs in the market. These plugs are manufactured by a very old company; Champion. The champion company wants to provide its customers with quality products at affordable prices.

The electrode in this spark plug is made of copper. Copper gives better control over the range of heat in your combustion engine. It has a corrugated insulator nose. This is a lower occurrence of flashovers.

2. NGK (4548) Spark Plug

NGK (4548) Spark Plug

This is one of the other best spark plug made of the copper electrode. Copper is a popular electrode used for many years. The gasket of this plug is zinc dipped. The installation of this spark plug is simple and easy. It makes your engine more efficient and improves the overall performance of your vehicle.

1. AC Delco RAPIDFIRE

AC Delco RAPIDFIRE

One of the best spark plugs made for professional mechanics. This spark plug has a copper core which is pure and works as a great electrode. The electrode center has platinum in its tip. The plug also has a seal made of high-quality brass. It works nicely and effectively in the prevention of fouling in engines. The vehicle performance is also better with this spark plug.


Spark plugs are essential for engines. Without them, your engine won’t work properly. Keep your vehicle and purpose in mind while purchasing a spark plug. Make sure you get an original and one of the bests!

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