6 Best Spark Plugs for 5.7 Hemi: Complete Buyer’s Guide for Reliable Ignition

Are you on the market for the best spark plugs for 5.7 Hemi? In today’s post, we will review the top-recommended options available on the market today.

Spark Plugs for 5.7 Hemi

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It is important to note that spark plugs are essential in your vehicle’s engine. They ensure that your 5.7L Hemi V8 engine runs smoothly and economically. They are cheap, but you require the best spark plug for a comfortable daily ride.

We know that it can be challenging to find a device that will provide value for the money you spend. This is why we decided to compile this guide to help you make a well-informed purchase.

You will not make a mistake purchasing any model we will share today. In addition, we will share the essential factors you need to keep in mind when shopping for 5.7 Hemi spark plugs.

Before we proceed, we will learn the crucial functions of spark plugs. The ideal spark plugs for 5.7 Hemi should supply the ignition spark effectively and efficiently to ignite fuel in the combustion chamber.

They are also used to relieve heat generated in the combustion chamber to the cooling system. Therefore, the spark plugs need to be in good condition for a more enjoyable ride.

What Are The Symptoms Of Bad Spark Plugs?

Let us look at some of the symptoms of bad spark plugins. This information is crucial because it will help you to know if you should consider buying new ones.

The main symptoms of bad spark plugins are rough engine idle, trouble starting, misfiring, surging, high fuel consumption, and lack of acceleration. It is vital to learn more about this because faulty spark plugs can lead to engine failure.

1. Rough Engine Idle

If you have faulty spark plugs, the engine will make a rough noise when idling. This can lead to additional costs due to damage caused by vibrations that resonate throughout the vehicle.

2. Engine Misfiring

The engine will temporarily shut down if the spark plugs are not working well. This issue arises because the cylinder is not firing correctly and causes emissions. 

3. Lack of Acceleration

Faulty spark plugs reduces the throttle sensitivity. If you want to restore your vehicle back to operation, consider replacing your spark plugs.

4. Trouble Starting

It is worth mentioning that you should have a crucial ignition spark for the engine to start. If you can’t get your vehicle to start, faulty spark plugs could be a common cause.

5. High Fuel Consumption

If you have noticed that your car consumes more fuel, consider checking your spark plugs. Faulty spark plugs can significantly increase high fuel consumption.

6. Engine Surge

If there is an engine surge, it can affect your ride. In addition, it is dangerous because the air intake is more than typically needed. This can result in continuous breaking, which can lead to accidents.

6 Best Spark Plugs for 5.7 Hemi Reviewed

Now that you know why you should consider replacing your spark plugs, let us look at the top-recommended spark plugs for 5.7 Hemi.

1. APDTY Tune-Up Spark Plug Kit (Best Overall)

The APDTY Tune-Up Spark Plug Kit is the best spark plug for a 5.7 Hemi engine. This model is popular because it comes with 16 spark plugs and a wire tune-up kit.

Therefore, this model comes with everything you need for a basic tune-up. In addition, the sparkers have a platinum center and ground electrodes.

This ensures no misfires, giving you more mileage in the long run.

The exceptional feature of this model is that the plugs fit Dodge Ram Pickups 5.7L Hemi and Dodge Durango Hemi 5.7L. It is popular because it is tolerable to wear and tear, even when subjected to harsh climatic conditions.

The only downside is that some users can make the initial investment a little bit high. However, this model will provide value for the money you spend.

Pros

  • Fits Dodge Durango Hemi 5.7L
  • Durable construction
  • Can operate effectively in a wide range of temperatures
  • It saves time and money
  • It comes with additional accessories like ignition wires

Cons

  • It can be costly for some automotive enthusiasts

2. NKG Spark Plugs Mopar (Best Value)

The NKG Spark Plugs Mopar is another sought-after model ideal for 5.7 Hemi engines. This model will provide more value than buying a small quantity, especially if you are a beginner.

The most outstanding feature of this model is the sturdy nickel structure. This structure helps to amplify the conductivity to boost the efficiency of your engine.

This ensures that they provide the best fuel economy due to the effective combustion spark. We recommend this model for those searching for spark plugs with superior voltage amplification.

The only downside of this model is that it has limited usability. This is because the nickel alloy is soft. It is not very durable, especially when compared to iridium spark plugs.

Pros

  • They are ideal for Jeep Dodge Ram with a 5.7L Hemi engine.
  • They have a high tolerance for vibration
  • They last for a long time if they are well maintained
  • They are easy to install
  • They are made in the United States

Cons

  • Nickel alloy is soft when compared to Iridium spark plugs

3. ACDelco 41-993 Professional Iridium Spark Plug (Best Gas mileage)

Sale
ACDelco 41-993 Professional Iridium Spark Plug
  • Iridium offers better engine idle stability and smoother performance

If you are searching for a model that has been around for a while, we recommend the ACDelco 41-993 Professional Iridium Spark Plug (Pack of 4).

This model provides an unquestionable performance fit for the Chrysler Dodge Ram 1500 that is fitted with a 5.7 Hemi engine.

It is important to note that the fine-wire electrode propels better ignition and combustion. This ensures that you always have a comfortable ride. It also ensures less carbon deposit, allowing you to use the engine in extreme conditions.

We recommend this model because the suppressor prevents statics inside the vehicle. In addition, the suppressor seal helps to block radio frequencies.

The only downside is that you have to check the gap after prolonged use. This is why most enthusiasts use them on old engines.

Pros

  • They are sealed tight to avoid combustion leakage
  • The iridium construction ensures it lasts for a long time
  • They provide faster acceleration with clean combustion
  • The ignition is quiet even when cold starting
  • The suppressor helps to prevent static inside the vehicle

Cons

  • It is recommended that you check the gap, especially after prolonged use.

4. NGK 5464 BKR5EIX-11 Iridium IX Spark Plug (Best performance)

The NGK 5464 BKR5EIX-11 Iridium IX Spark Plug is an excellent design for the 5.7 Hemi engine. It will provide an excellent anti-fouling function to ensure the engine is efficient in ignitability.

This spark plug is popular because it upgrades throttle efficiency. The iridium tip provides consistent sparks. It has a high melting point, making it durable in different environments.

This model is easy to install without specialized tools. The exterior is machined to provide a flawless thread. In addition, the insulator nose is longer to avoid flashover.

This model is only recommended for cars and light trucks. Therefore, you should not use them on old Hemi engines.

Pros

  • The Iridium tip provides a long-lasting spark
  • They are easy to install
  • The exterior is machined to provide a flawless thread
  • They are constructed with durable materials
  • They are ideal for modern Hemi engines

Cons

  • They are not recommended for old Hemi engines

5. Champion 3570 Platinum Power Spark Plugs (Best Long Life Option)

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Champion Platinum Power 3570 (RE14PMC) Pack of 1 (UPC 037551009367)
  • Platinum Power- Premium Spark Plug. Powerful Performance.

The Champion 3570 Platinum Power Spark Plug is another solid option for your valuable 5.7L engine. It is loaded with impressive features to ensure you have a smooth experience.

This model is popular because of the fine-wire center electrode. It ensures greater ignitability and enhances fast acceleration.

The other unique feature is the heat-active alloy. It allows the electrodes to reach optimal temperature.

Pros

  • They provide powerful performance
  • They can be used in different environments
  • They are designed to last for a long time
  • It is highly rated when compared to some options listed in this guide

Cons

  • It is important to check if it fits your 5.7 Hemi engine

6. Autolite AP5263-4PK Platinum Spark Plug (Best Pack of 4)

Autolite Platinum AP5263 Automotive Replacement Spark Plugs (4 Pack)
  • MAXIMUM PERFORMANCE: Every Platinum spark plug is necked-down center electrode fires quicker and…

The last product on the list today is the Autolite AP5263-4PK Platinum Spark Plug. This model is ideal for enthusiasts who are searching for an effective spark plug without hurting their budget.

This specific model is an improved version with more functionality. The platinum body with conductive copper ensures that your engine runs smoothly.

The metal alloy construction is durable and ensures that they last for a long time. In addition, the gap erosion is minimal, and it enhances fast acceleration.

If you are looking for a model with nickel plating on the exterior, this is a solid choice for you. It is affordable but provides efficiency. However, it takes a long time to install when compared to other options in this guide.

Pros

  • The platinum body with conductive copper is durable
  • They enhance fast acceleration
  • Gap erosion is minimal
  • They are affordable but very efficient
  • They feature a nickel plating on the exterior

Cons

  • It fits only one specific type of vehicle.

Factors to Consider When Buying Spark Plugs for 5.7 Hemi

Finding the best spark plugs for 5.7 Hemi can be daunting, especially if you are a beginner. Here are the essential factors you need to keep in mind:

1. Spark Plug Type

It is essential to check the type of spark plug you want to buy. Different types of spark plugs are available for the 5.7 Hemi engine.

The main spark plug types are copper spark plugs, platinum spark plugs, double platinum spark plugs, and iridium spark plugs.

In addition, you need to know if you need standard or tapered thread spark plugs.

2. Size

We recommend buying the proper spark plug size for your engine. It should fit inside the cylinder head for it to work efficiently.

You need to pick the right model depending on your specific engine.

3. Gap

It is worth mentioning that spark plugs are designed for different types of engines. Some models are specifically created for diesel or gasoline engines.

The correct gap size for the 5.7 Hemi engine is 0.43 inches. Make sure that the spark plug you use has a sufficient gap.

4. Quantity

Before buying spark plugs, it is important to note that you should replace all of them at once. The 5.7 Hemi engine uses 16 spark plugs.

Therefore, it is wise to buy in bulk to save money and time. Replacing all of them at once ensures that the engine is well maintained. 

Frequently Asked Questions (FAQs)

Here are the most frequently asked questions about Spark Plugs for 5.7 Hemi:

1. How Many Spark Plugs Does 5.7 Hemi Use?

The 5.7 Hemi engine uses 16 spark plugs. It is vital to replace all of them at once to ensure your car runs well.

2. Why Does the 5.7 Hemi Use 16 Spark Plugs?

The V8 5.7 Hemi uses 16 spark plugs because it has eight cylinders, and each cylinder uses two spark plugs.

Since each cylinder initiates two flame points, each cylinder needs two spark plugs to avoid emission problems.

This ensures there is cleaner combustion.

3. How Often Should I Change 5.7 Hemi Spark Plugs

Replacing your spark plugs depends on a specific model. The spark plugs discussed in this comprehensive guide can be replaced every 30,000 miles (48,000 Kms).

However, the number of miles can be high or low depending on the brand you are planning to use. This is why we compiled a list of models which are not prone to tear and wear.

4. Is 5.7 Hemi Reliable?

The 5.7 Hemi is reliable because it helps to save on fuel. Most automotive enthusiasts recommend the third generation because of its Multi-Displacement System.

On top of that, it is environmentally friendly and helps to conserve energy. This ensures that you will always have a comfortable ride.

5. What is the Best Spark Plug?

The best spark plug for boosting horsepower is platinum and Iridium spark plugs. Some cars run better with copper or nickel-coated spark plugs.

Therefore, it is important to read the instructions manual to ensure you buy the correct spark plug for your Hemi engine.

We recommend consulting automotive experts to ensure you do not waste money buying spark plugs that are incompatible with the 5.7 Hemi.

It is worth mentioning that iridium spark plugs have a higher melting point and higher durability when compared to platinum spark plugs. However, this does not mean that you should not replace the spark plugs.

Conclusion

By now, we are sure that you have found the best spark plug for 5.7 Hemi.

As you have seen, we have only included models from the top recommended brands that are made from superior quality materials. This ensures that you have a comfortable ride without any engine issues.

We recommend buying the APDTY Tune-Up Spark Plug Kit because it comes with eight ignition spark wires and eight coil-on plug boots. The Champion Spark Plug series is also an excellent choice for Dodge automotive enthusiasts.

We hope that this comprehensive guide helped you to complete a successful transaction. You will not make a mistake investing in any model we have shared today.

Last update on 2024-10-27 / Affiliate links / Images from Amazon Product Advertising API

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