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5 Best Spark Plugs for 5.7 Hemi in 2023: Optimize Your Ride

5 Best Spark Plugs for 5.7 Hemi in 2023

Unleashing the heart-pounding power of your 5.7 Hemi engine demands more than just horsepower figures on paper—it’s about igniting a symphony of controlled explosions that send your adrenaline soaring. Welcome to the world of spark plugs, where these unassuming components play a pivotal role in the relentless pursuit of performance perfection. In this in-depth review, we delve into the realm of the “Best Spark Plugs for 5.7 Hemi,” dissecting the technologies that ignite the fire within. 

Whether you’re a performance enthusiast seeking to maximize every ounce of power or a dedicated driver longing for smoother starts and improved efficiency, our guide will navigate you through the spark plug landscape. Join us as we unravel the sparks that ignite not only your engine but also your passion for a driving experience that’s nothing short of exhilarating.

Rev Up Your Engine with the Top 5 Best Spark Plugs for 5.7 Hemi

1. 5.7L Hemi Spark Plugs by Prominent Autoparts

5.7L Hemi Spark Plugs by Prominent Autoparts

As a user of the ignition coil from prominent_autoparts, I had a generally positive experience. The product arrived in new condition, sealed in its original packaging, which ensured its quality. Installation was straightforward, and it fit perfectly in my vehicle. The ignition coil performed exceptionally well, providing a consistent and reliable spark to my engine.

Price: US $154.73

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  • The ignition coil came in its original packaging, assuring its new and undamaged condition.
  • It was a seamless fit for my vehicle, which made the installation hassle-free.
  • The ignition coil delivered consistent sparks, contributing to the smooth operation of my engine.
  • The seller had a high rating, indicating a history of satisfied customers.


  • While it worked perfectly for my vehicle, it may not be compatible with all car models.
  • The ignition coil may be pricier than other options, but its quality justifies the cost for many.


Prominent_autoparts’ ignition coil is a reliable and high-quality product that ensures consistent engine performance. Verify compatibility with your vehicle model before purchasing. Overall, I had a great experience with it and would recommend it to fellow car enthusiasts.



Having used the Mopar 5.7L HEMI NKG Spark Plugs Set in my 2011 Dodge Ram with the 5.7L HEMI engine, I can confidently say that these spark plugs are a fantastic choice. They arrived in perfect condition, new and sealed in their packaging, ensuring their quality. Installation was a breeze, thanks to their compatibility with my vehicle. The performance these spark plugs delivered was outstanding, keeping my HEMI engine running smoothly.

Price: $134.38

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  • These spark plugs are designed explicitly for 5.7L HEMI engines, ensuring a precise fit and optimal performance.
  • The spark plugs are of OE (Original Equipment) spec, guaranteeing reliability and longevity.
  • This set is an excellent value for those with HEMI engines, as it includes all the necessary plugs.
  • Many users have praised these spark plugs for their performance and compatibility.


  • These spark plugs are tailored for HEMI engines, so they may not work with other vehicle models.
  • These spark plugs are an excellent choice for HEMI engine owners
  • They may cost more than generic spark plugs
  • The added cost is justified by their compatibility and performance with HEMI engines.


The Mopar 5.7L HEMI NKG Spark Plugs Set is a must-buy for anyone with a compatible vehicle. They fit perfectly, perform exceptionally well, and come at a reasonable price. I highly recommend it for maintaining engine efficiency and performance.

3. NGK Iridium IX Spark Plugs

16 pc NGK Iridium IX Spark Plugs

As a user of the NGK Iridium IX Spark Plugs for my 5.7L Hemi engine, I must say I’m thoroughly impressed. These spark plugs have not only optimized the performance of my Dodge Charger but have also significantly reduced emissions and misfires. The advanced technology behind NGK’s design shines through as my engine runs smoother and more efficiently. The durable shell ensures a prolonged spark plug life, a feature that reassures me about long-term reliability.

Price: $117.98

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  • NGK Iridium IX Spark Plugs provide sharper spark focus
  • Fewer misfires result in a more robust ignition process
  • Improved overall performance of the vehicle
  • Partnership with auto manufacturers shows dedication to quality and innovation
  • Instills trust in their products.


  • NGK Iridium IX Spark Plugs provide impressive performance enhancements.
  • However, their higher cost may not be ideal for budget-conscious consumers.
  • Installation may require more expertise due to the specialized design.


The NGK Iridium IX Spark Plugs are an excellent choice for boosting ignition efficiency, reducing emissions, and improving performance in a 5.7L Hemi engine. They’re a bit pricier but worth it for sharper sparks and fewer misfires. Professional installation may be needed if you’re not familiar with spark plug replacement.

4. NGK Standard Spark Plugs

NGK Standard Spark Plugs

Using the NGK Standard Spark Plugs in my 5.7L V8 has been a mixed experience. While these spark plugs claim to reduce emissions and misfires, my engine’s performance improvement was subtle. The promise of advanced technology and innovation might hold for other NGK models, but the standard version didn’t bring remarkable changes to my engine’s efficiency.

Price: $75.17

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  • NGK Standard Spark Plugs are durable and have a long lifespan
  • They are cost-effective replacements for Jeep Grand Cherokee’s spark plugs
  • They rely on quality ignition components and have a trusted reputation.


  • The promised benefits of reduced emissions and improved performance were not seen in my vehicle.
  • The claim of “sharper spark focus for fewer misfires” was not noticeable in this model.
  • Standard plugs like these fall short in delivering exceptional combustion efficiency compared to more advanced options like Ruthenium HX and Iridium from NGK.


In conclusion, the NGK Standard Spark Plugs might be a reasonable choice for those seeking a primary replacement for their 5.7L V8 engine. However, if you’re looking for a significant improvement in performance and combustion efficiency, it’s advisable to consider NGK’s higher-tier options that incorporate more advanced electrode materials. While the product boasts NGK’s legacy of quality, it might not deliver on the promise of cutting-edge technology and innovation as effectively as other models in their lineup.

5. Champion Copper Plus Spark

Champion Copper Plus Spark

As a user of the Champion Copper Plus Spark Plugs in my 5.7L V8 Chrysler 300, I have experienced a noticeable improvement in performance. These spark plugs live up to their reputation, enhancing combustion efficiency and reducing emissions. The copper-core center electrode and patented SAC-9 semiconductor resistor contribute to consistent and efficient combustion throughout the spark plug’s lifespan. The Ultraseal-coated shell provides durability and protection, ensuring reliable sparking capabilities for up to 20,000 miles.

Price: $46.26

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  • Champion Copper Plus Spark Plugs improve engine performance and fuel economy.
  • They reduce emissions, which aligns with environmental concerns.
  • The use of durable precious metals makes them a reliable option.
  • Their legacy in racing and automotive manufacturing instills trust in their quality and innovation.


  • Champion Copper Plus Spark Plugs offer performance improvements.
  • They are not as technologically advanced as some alternatives with iridium or platinum electrodes.
  • They may require more frequent replacements, which could impact long-term costs.


Champion Copper Plus Spark Plugs are great for boosting performance and fuel efficiency in a 5.7L V8 engine. They’re affordable and reliable, with a history of success in racing. For even more advanced technology and longer replacement intervals, higher-tier options are available.

7 Tips to Choose the Best Spark Plugs for 5.7 Hemi

1. Consult Your Manufacturer’s Recommendations:

Your vehicle manufacturer knows your engine best. Check your owner’s manual or visit the manufacturer’s official website for recommended spark plug specifications. This information often includes the brand, type, and heat range that are optimized for your 5.7 Hemi engine’s performance and longevity.

2. Consider Your Driving Style:

Your driving habits dictate the type of spark plugs you should select. If you frequently push your 5.7 Hemi to its limits, investing in iridium or platinum spark plugs might be beneficial. These materials offer improved conductivity and resilience, ensuring consistent performance even under demanding conditions. For daily commuting or lighter use, copper plugs can be a cost-effective option.

3. Understand Heat Range:

The heat range of a spark plug refers to its ability to dissipate heat from the firing tip. Engines with higher power outputs often generate more heat. Choosing the proper heat range is critical to preventing pre-ignition (detonation) and maintaining optimal performance. Colder spark plugs are suitable for high-performance engines as they dissipate heat more efficiently, but make sure to select the correct range for your specific 5.7 Hemi configuration.

4. Choose the Right Material:

Different spark plug materials offer varying levels of performance and longevity. Copper spark plugs are affordable and have good conductivity, but they wear out faster than platinum or iridium plugs. Platinum plugs are more durable and offer better performance, while iridium plugs are known for exceptional longevity and superior conductivity. Consider your budget and performance requirements when choosing the suitable material.

5. Gap Size Matters:

The spark plug gap—the distance between the center and ground electrode—directly affects ignition efficiency. An incorrect opening can lead to misfires and poor combustion. Refer to your vehicle’s manual or the spark plug manufacturer’s recommendations to determine the proper gap size. Some aftermarket modifications might require adjustments to the gap for optimal performance.

6. Resist the Temptation of Over-Upgrading:

While high-performance spark plugs can enhance power and efficiency, matching the upgrades to your engine’s modifications is essential. Highly modified engines might benefit from advanced spark plug designs, but a stock or mildly modified 5.7 Hemi might not experience significant gains. Evaluate your vehicle’s modifications and intended use to determine the appropriate spark plug type.

7. Read User Reviews:

Real-world experiences from fellow 5.7 Hemi owners can provide valuable insights into spark plug performance and longevity. Browse online reviews and forums to understand how specific spark plug models perform in real-world driving conditions. Pay attention to users who have engine setups and driving habits similar to yours.

Final Words

In the world of high-performance engines, every spark matters. Choosing the best spark plugs for your 5.7 Hemi engine isn’t just a matter of ticking boxes—it’s about unlocking the full potential of your driving experience. By heeding manufacturer recommendations and understanding the nuances of heat range, material selection, and gap size, you’re taking deliberate steps toward enhancing power and efficiency.

Remember, it’s not just about the spark plugs; it’s about the symphony of controlled explosions that they initiate within your engine. Whether aiming for the thrill of a track-ready beast or the comfort of a smooth daily ride, the correct spark plugs can make all the difference.

So, as you explore the myriad options and navigate the information available, keep your driving style, vehicle modifications, and intended use in mind. When you finally install those meticulously chosen spark plugs into your 5.7 Hemi, relish the newfound power, efficiency, and exhilaration they bring to life.

Because, after all, it’s not just about the journey—it’s about how you ignite it. Here’s to a ride that’s electrifying in every sense.

However, we understand that sometimes unexpected challenges arise, and you might find yourself dealing with bad spark plugs. If you ever face the dilemma of starting your car with less-than-ideal spark plugs, our blog post on “How to Start a Car with Bad Spark Plugs” provides valuable insights and practical tips to get you back on the road smoothly.

Furthermore, if you’re also interested in enhancing the spark in your 5.3 Silverado, check out our dedicated guide on the “5 Best Spark Plugs for 5.3 Silverado.” These recommendations ensure that your engines, whether Hemi or Silverado, operate at peak efficiency and power, providing an exhilarating driving experience.

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