Home » Top 6 Best Spark Plugs for 5.7 L Hemi

Top 6 Best Spark Plugs for 5.7 L Hemi

When you’re looking to modify and upgrade your car, there are a lot of small details that can make a big difference in terms of performance. One of the most important is selecting the right spark plugs for your engine. In this article, we’ll take a look at what makes the 5.7 Hemi one of the most popular engines around, as well as some of the best spark plugs for it. By understanding how each plug works and what benefits they offer, you can make an informed decision about which ones are right for your vehicle. So read on to learn more!

Click here to skip to our recommended pick!

Best Spark Plugs for 5.7L Hemi

Image
Product
BEST CHOISE
NGK 5464 BKR5EIX-11 Iridium IX Spark Plug
  • Longer insulator nose prevents fouling, the corrugated ribs on insulator prevent flashover, and a triple gasket seal eliminates combustion gas leakage
  • 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 - superior anti-corrosion and anti-seizing properties. Copper core aids in heat removal
  • Value for money: 🔥🔥🔥🔥🔥
Mopar Spark Plugs 5.7L HEMI
  • Nickel made
  • Genuine MOPAR parts
  • Value for money: 🔥🔥🔥🔥
PREMIUM QUALITY
Bosch Automotive Double Iridium Spark Plug, Longer Life
  • 0.6mm fine wire firing pin provides superior ignitability and performance
  • 360 degree continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability
  • 7 year performance Satisfaction guarantee
  • Value for money: 🔥🔥🔥🔥
Autolite Platinum Spark Plug
  • Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing
  • Nickel-plated steel shell for long-life corrosion resistance
  • High quality ptoduct
  • Value for money: 🔥🔥🔥🔥
Champion Platinum Power Spark Plug
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Value for money: 🔥🔥🔥🔥
ACDelco Professional Iridium Spark Plug
  • Iridium fine-wire electrode helps improve ignition of the fuel and burns away carbon deposits on the tip of the plug as they form, to help improve fuel economy
  • One piece suppressor seal blocks radio frequencies that can affect vehicle electronics
  • Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage. Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap
  • Value for money: 🔥🔥🔥🔥

Spark Plugs For 5.7 Hemi Buying Guide & FAQ

Best Spark Plugs for 5.7L Hemi

There are a lot of things to consider when purchasing spark plugs for your 5.7 Hemi. With so many brands and types available, it can be difficult to know where to start. In this guide, we’ll answer some of the most commonly asked questions about spark plugs for the 5.7 Hemi engine, and help you choose the right plug for your needs. We’ll also recommend some of our favorite options. So whether you’re just looking to replace your old plugs, or you’re shopping around for something more performance-oriented, read on for all the info you need.

What is a spark plug?

A spark plug is a device that sends an electric current through the air gap between the center electrode and the side electrode, causing it to break down and ignite at a critical voltage. The tip of the main central electrode has a pointed or rounded emitter that contains many tiny holes called porcelain which are where this electric current comes from, hence the name spark plug.

What is a Spark Plug Function?

When the voltage supplied by the ignition coil’s secondary circuit is high enough, it jumps between the electrodes in a spark plug. The resulting spark ignites the compressed mixture of air and fuel at just the right time, with just the right amount of force to cause combustion. As you can imagine, there are many parts involved in making sure everything works together just right – especially when you consider that an engine operates around 5,000 revolutions per minute (RPM). If any one of these elements fails or goes wrong, power output suffers greatly. That is why routine maintenance on your 5.7 Hemi is so important. What better time to learn about this vital system than now! Let’s get started.

A note about spark plugs: it is important to know that there are many types and sizes of spark plugs available for your car, and they all vary in terms of performance capabilities, durability and price (sometimes reflecting their quality).

What are the Plug Types?

Spark plugs are made in a number of different types to meet various requirements. There are standard replacement plugs and specialty plugs such as anti-fouling, resistor, wet/dry and others. On this page we’ll discuss some of the most common spark plug types available for diesel and gas-powered engines — keep reading!

  1. Standard Plug Type Standard replacement plug styles range from copper core (similar design to original equipment) and platinum and iridium (higher performance). Copper core type plugs will typically last longer than their platinum replacements, but don’t carry the high price tag associated with iridium plugs. With either choice, make sure the heat range is compatible.
  2. Copper Core Plugs – The copper center electrode provides excellent heat transfer and a long plug life. However, it is subject to corrosion if exposed to a corrosive environment or oil that contains sulfur
  3. Platinum Plugs – Platinum plugs have a precious metal electrode, which gives you increased performance at higher engine speeds. They do not last as long as the copper core plugs but they carry a higher price tag. These are one of our favorite spark plug types due to their ability to quickly burn off combustion deposits—making them an excellent choice for high-mileage engines.
  4. Platinum & Iridium Spark Plugs: Another type of enhanced plug is the iridium/platinum mix from NGK. It adds even more performance than platinum plugs without significant changes to heat range. Also, because of its design, these perform well in all climate conditions.
  5. Anti-Fouling Plugs – Anti-fouling plugs are designed to resist fuel and oil fouling, keeping the electrodes cleaner for increased spark life. While they may carry some premium price tags, they can save you money on replacement spark plugs. Because of their design, they do tend to have slightly higher heat ranges than standard plugs, so be sure to check your vehicle’s specifications when choosing an anti-fouling plug type.
  6. Memory Plugs – Memory or nickel alloy plugs work much like the above mentioned anti-fouling sparkplugs – but with a few differences that give them a shorter lifespan and less resistance to fouling. When buying memory plugs for your diesel engine, choose plugs with special metals to enhance heat transfer and electrode life.
  7. Resistor Plugs – Resistor plug types contain a resistor in the center of the plug that reduce noise emission levels for cleaner running—an excellent choice if you’re looking to improve throttle response without changing performance. However, they do not typically last as long as other standard replacement plugs.
  8. Dual Platinum Plugs – A popular design for diesel owners is dual platinum plugs; these contain two precious metal electrodes in each spark plug (hence their name). Because of this design, they do not require regular replacement like single-element plugs do. As an added bonus, duals also burn off carbon deposits more quickly than traditional plugs which helps your engine run better when it’s time for maintenance.
  9. High-Performance Plug Type – High performance plugs are designed with platinum electrodes that have a longer lifespan. They do not last as long as iridium plugs, but they’re less expensive. These spark plug types are popular with owners looking to improve fuel economy or throttle response without changing power levels significantly.

How to choose the spark plug?

If you still don’t know well the basic knowledge of the spark plug, read this article, you will find out how to choose a suitable spark plug for your 5.7 Hemi in an easy and fast way:

  • Material: There are two kinds of materials: one is “iron” and the other is “alloy”. The former can resist high temperature and has high durability; while the latter can work better in electrode-to-electrode welding under high voltage. The alloy material contains much nickel which can increase heat resistance, but also affect performance. So when we look at the price tag on the package, if it’s just below $10, then most likely it is made from alloy.
  • Thread size: The thread size is 3/8″ or 10mm, can be recognized by looking at the picture of this item on Amazon.
  • Resistor: Usually it comes with resistor. Resistance is an essential part, which will affect how fast you start your car and its anti-interference ability. Besides, if you want to increase horsepower, you should buy one without resistor. Then the sparks could jump farther away from the electrodes so that more voltage will be induced into the air to form bigger spark discharges.
  • Number of electrodes/poles: The number of electrodes determines how many channels for current flowing through each other after it gets out of one electrode, and then induce other electron beams(electrodes) to generate short circuit currents. If the number is more, the electricity will have much better clustering so it can increase anti-interference ability.
  • Insulator tip shape: Make sure these are in good condition to ensure that your engine can work well when it starts. So check whether they are clean or not when buying and replace if necessary (usually after 12,000 miles).
  • Core: Usually what we see on Amazon or ebay is of bad quality. You should choose a core with stable structure and high conductivity to meet your need of performance. The cheaper one often has poor conductivity and short lifespan.

The difference between copper core and aluminum core spark plugs: A copper core has great electric conductivity; while an aluminum one has low reluctance. The former is usually used on vehicles with normal charging system; while the latter is for high performance cars with ultra-high output battery and an extra power capacitor.

There are a few more things to consider while choosing the spark plug for your 5.7 Hemi:

  1. Electrode Design – The design of the center electrode is another important factor when choosing spark plug types. Standard plugs feature an exposed electrode tip while resistor and anti-fouling plugs both contain insulator shields; this limits exposure to potentially damaging conditions such as oil deposits and corrosive chemicals in biodiesel fuels (when using biodiesel, make sure your sparkplug has either a resistor or anti-fouling design).
  2. Heat Range – The heat range of your spark plugs is also important when choosing replacement types. This ranges from “hot” to “cold,” with colder plugs designed for fuel economy and everyday driving while hotter plugs are used to increase horsepower in high-performance applications. Colder plugs have a longer insulator tip that can withstand higher temperatures, which helps reduce wear on components—making them an excellent choice for older vehicles or engines that have seen some wear.
  3. RPM – Choosing the right spark plug type for your engine’s RPM range is essential. Standard copper core plugs work well across most aftermarket vehicle applications—but remember, they do not last as long as iridium or other enhanced designs, so be sure to replace them in accordance with your vehicle’s recommended maintenance schedule.
  4. Choosing The Right Fit – Choosing the right spark plug type for your engine is not difficult when you take a look at the model numbers and details in reference to each vehicle’s specifications. Your owner’s manual will provide this information; when in doubt, consult your mechanic or an automotive equipment retailer to avoid buying the wrong replacement plugs.

If you are not sure which one to choose, then I suggest you buy copper core spark plugs because most applications of 5.7 Hemi are ordinary ones. Besides, they are affordable too.

Overall #1 Best Spark Plugs

NGK BKR5EIX-11 Iridium IX Spark Plug

NGK BKR5EIX-11 Iridium IX Spark Plug

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling. 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.

Key Features:

  • Longer insulator nose prevents fouling, the corrugated ribs on insulator prevent flashover, and a triple gasket seal eliminates combustion gas leakage
  • 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 – superior anti-corrosion and anti-seizing properties. Copper core aids in heat removal

Pros:

  • 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
  • Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage
  • Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today’s high performance engines

Check Latest Price

Choosing the Best Spark Plug for 5.7 Hemi

Best Spark Plugs for 5.7L Hemi

Choosing the right spark plugs for your car is an important step towards proper maintenance. The wrong spark plug can lead to engine damage, poor fuel economy or even misfire so it’s important to understand what kind of spark plugs are available and which are best suited for your vehicle.

Spark Plugs are internal components in cars that produce sparks between two electrodes to ignite the fuel, without spark plugs the engine would not run.

When trying to choose the correct plug for your 5.7 Hemi there are many different factors to consider, like durability, faster acceleration, greater fuel economy, temperature control and ease of use. This article is going to look at some of these aspects one by one and explain how they affect performance of your car.

Temperature control

To begin looking at this you must first know what standard spark plugs do and what their limitations are if any. Standard plugs can handle about 300-400 degree Fahrenheit flames before melting down or causing misfires. This however does not mean that higher temperatures can’t damage your engine or reduce your gas mileage. An important consideration is to make sure the spark plug will survive the conditions produced by your 5.7 Hemi.

Hotter than normal air entering into your engine will cause decreased performance and fuel economy so the best way to handle this problem is by installing colder plugs. In general colder plugs will help your engine handle hotter air better but there is a downside, colder plugs tend to wear down faster and might not last as long.

For optimum performance under all weather conditions consider using platinum tipped spark plugs. The extended tip design increases heat transfer and durability while the platinum coating prevents erosion of the electrode for optimal performance under all conditions including high temperatures, heavy load, high compression engines with forced air induction, gasoline direct injection systems (GDI) or turbo charged engines.

Durability

As far as durability goes, many people choose iridium spark plugs because they last much longer than standard plugs. However, they are also more expensive and can wear out consistantly if not taken care of well. If there is an upside, these plugs will even last up to double the life of a normal plug and can help save money in the long run by reducing how often you need to change them. You should know that iridium plugs might be wasted on cars with lower power outputs like hybrids since it won’t really be noticeable but high performance cars like 5.7 Hemis would see a boost from these plugs.

At the top of the list in terms of durability is platinum tip spark plugs. They last up to 100,000 miles while running at peak performance making them ideal for extreme driving conditions or longer commutes where they’ll be exposed to high heat for extended periods.

Faster Acceleration

In addition to durability one of the most important factors in choosing spark plugs is how much faster they can accelerate your car. Many people choose a plug that increases their cars acceleration rate by a few tenths of a second without sacrificing much mileage because it’s simply something fun to have and many people love fast cars. The cheapest upgrade you can make to increase the speed of your 5.7 Hemi is with sparkplugs, which do not require expensive engine modification or advanced computer knowledge like some other modifications might need.

Iridium spark plugs which last up to 50,000 miles and increase acceleration by 2% because their superior heat resistance allows for a higher voltage transfer from spark plug gap across time. A drawback of these plugs is that they’re more expensive and not as readily available.

Fuel Economy

For people who want their engine to run efficiently out on the road another important factor to think about is fuel economy. Platinum spark plugs are the most fuel efficient on the market but their price point makes it difficult for some people to justify them on a 5.7 Hemi. If you have enough money to spend, this would be the type of tip to buy because they allow you to save more at the pump by using less gas per mile travelled.

Iridium spark plugs offer a great solution for those looking to save money at the pump with a fuel saving design that increases gas mileage by up to 2%. They run hotter than standard plugs which means less wasted energy from the combustion process resulting in better MPG.

Ease of use

Ease of use might not seem important at first, but it becomes essential when trying to change your plugs quickly before your next road trip or track meet coming up soon. Some models can be very difficult to take out without taking off other parts around the engine which means wasted time and money that could’ve been better spent elsewhere. The best plug for ease use is one-piece iridium because their flat design makes them easier to change without special tools or a deep understanding of how your engine works.

Price

There are three kinds of spark plugs that are commonly used in 5.7 Hemi engines, two-piece iridium, one-piece platinum and double platinum. The cheapest option is the one-piece which has no special features besides the fact that they’re meant for high performance engines like 5.7 Hemis while the most expensive type is double platnium because its made up of two layers of platinum where other types only have one layer under the ceramic insulator tip.

Best Spark Plugs for 5.7 Hemi

The top best product [hide]

NGK 5464 BKR5EIX-11 Iridium IX Spark Plug


NGK 5464 BKR5EIX-11 Iridium IX Spark Plug
Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling. 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.
Specifications:
Longer insulator nose prevents fouling, the corrugated ribs on insulator prevent flashover, and a triple gasket seal eliminates combustion gas leakage
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 - superior anti-corrosion and anti-seizing properties. Copper core aids in heat removal
The Good And The Bad
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
Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage
Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines

Mopar Spark Plugs 5.7L HEMI


Mopar Spark Plugs 5.7L HEMI
This is a genuine MOPAR Nickel spark plugs for your vehicle. This OE spark plug is designed for optimum engine performance. Fits 2009 - 2013 Dodge Ram 1500 2009 - 2013 Dodge Durango 2009 - 2013 Dodge Challenger 2009 - 2013 Chrysler 300 2009 - 2013 Dodge Charger 2009 - 2013 Jeep Grand Cherokee 2009 - 2010 Jeep Commander 2010 - 2013 Dodge Ram 2500 2011 - 2013 Dodge Ram 3500 2009 Chrysler Aspen.
Specifications:
Nickel made
Genuine MOPAR parts
The Good And The Bad
Designed for optimum engine performance
Fits your vehicle perfectly

Bosch Automotive Double Iridium Spark Plug, Longer Life


Bosch Automotive Double Iridium Spark Plug, Longer Life
Bosch Double Iridium Spark Plugs are engineered to deliver both high performance and long life, representing the best of OE spark plug technology. The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and ground electrode help it to go the distance.
Specifications:
0.6mm fine wire firing pin provides superior ignitability and performance
360 degree continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability
7 year performance Satisfaction guarantee
The Good And The Bad
Double iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard Copper plugs
Original equipment, pre-gapped replacement delivering optimum fit, form and function
High Quality

Autolite Platinum Spark Plug


Autolite Platinum Spark Plug
Step up to platinum. A center wire platinum firing tip provides improved performance and durability. They fire quicker and cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy versus standard plugs.
Specifications:
Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing
Nickel-plated steel shell for long-life corrosion resistance
High quality ptoduct
The Good And The Bad
Full platinum tip ensures virtually no gap erosion for long plug life
Yttrium enhanced, high nickel alloy side electrode maintains precise gap to increase plug life
Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, quicker acceleration, and improved fuel economy

Champion Platinum Power Spark Plug


Champion Platinum Power Spark Plug
Champion Platinum Power spark plugs deliver powerful performance. Made from exclusive Heat-Active alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.
Specifications:
Platinum center electrode for long life
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
The Good And The Bad
Heat-Active alloy allows electrodes to reach optimal temperature
Platinum conductor; Center electrode platinum tip wears less than a standard spark plug; This allows the plug to maintain the gap setting throughout its life
Exclusive heat-active alloy allows the electrodes to reach optimal temperature quickly and maintain stable operating temperature under all engine loads

ACDelco Professional Iridium Spark Plug


ACDelco Professional Iridium Spark Plug
ACDelco is the true General Motors Original Equipment parts brand, infusing a century of experience, innovation and quality into more than 90,000 GM OE and other parts. When it comes to replacing your spark and glow plugs, ACDelco offers a full line of Professional premium aftermarket and Specialty spark and glow plug products. ACDelco Professional Iridium Spark Plugs are the high quality replacement ideal for many vehicles on the road today.
Specifications:
Iridium fine-wire electrode helps improve ignition of the fuel and burns away carbon deposits on the tip of the plug as they form, to help improve fuel economy
One piece suppressor seal blocks radio frequencies that can affect vehicle electronics
Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage. Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap
The Good And The Bad
Iridium offers better engine idle stability and smoother performance; iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration
Provides the greatest wear resistance and durability over Platinum and Conventional spark plugs
Manufactured to meet your expectations for fit, form and function

When Should I Replace Spark Plugs?

Best Spark Plugs for 5.7L Hemi

The 5.7 Hemi engine is known for running on some of the best spark plugs out there. It’s normal to go 100,000 miles without needing new ones. At some point, you’ll need to make the switch. This article will cover what you need to look for when it’s time to replace your spark plugs and why this needs replacing in the first place.

Not all cars run on platinum or iridium plugs; however if yours does then you should definitely consider changing them every 50,000 miles depending on how often you drive your car (the more often, the shorter life span). If they’re not made of platinum or iridium, then you can expect anywhere from 100,000 miles to 300,000 miles before replacement is necessary depending on the condition of your car.

How to Change Spark Plugs on Your 5.7 Hemi?

Best Spark Plugs for 5.7L Hemi

If you’re reading this article, chances are you just faced the high cost of having your mechanic change your spark plugs on your 5.7 Hemi. Let’s take the Ram 1500 as an example. Maybe you did it yourself and just want to know if there’s a better way. Luckily, the answer is yes! If you want to save time and money in the future, it is best to learn how to do this by yourself.

Find the location of each of the spark plugs on the 5.7 Hemi engine. You can find these spark plugs on the top of your engine. The plug is located right next to the coil pack, which looks like a spark plug but has 6 electrodes instead of 4.

  1. Remove the rubber cover around each spark plug so you can access the single bolt holding the top of each one in place. You can just pull up on this with your hand.
  2. Remove the bolt on top of the spark plug so you can remove the spark plug cover and access your spark plug. It is a good idea to have an old rag underneath each bolt so they don’t scratch up your truck’s engine when you take them out. Also, place these bolts in a safe place so they don’t fall down into the engine after you remove them.
  3. Take out your new spark plugs and remove them from their packaging. Never use a used spark plug because it could break off inside of your head and be very expensive to have removed! Make sure that you thread it in by hand at first just to make sure everything is going smoothly before you put it all back together again with your wrench. Also, make sure the rubber boots are spotless before you seal them with the spark plug cover so they can provide maximum protection against dirt and water.
  4. Screw your new spark plug in by hand until it is almost tight to avoid cross threading . Then use your wrench to tighten it the rest of the way down tightly for full security.
  5. Use a torque wrench to ensure you don’t over-tighten because this could damage your threads or your engine block!

Once you have tightened all 6 plugs, reattach their rubber boot covers, put everything back where it was originally, and start up your truck to see if there’s any difference in its performance!

And that’s all there is to it! You’ll save money and time by doing this yourself next time you need new spark plugs in your 5.7 Hemi Ram 1500 engine.

Conclusion

 

If you’re having a hard time choosing a spark plug for 5.7 Hemi engines the best place to start is with iridium plugs because they have many benefits and allow your engine to run at peak performance. If you want an upgrade that helps your engine handle even hotter temperatures without sacrificing acceleration, fuel economy or ease of use then platinum plugs are the best option for 5.7 Hemi engines.

If you are looking for the best spark plugs for 5.7 Hemi, then NGK Iridium IX Spark Plugs are the best choice. They have a long life and resist fouling which increases fuel economy. Additionally, they produce less engine noise during operation than other plugs do. Thanks for reading this article!

Add comment