Buyers Guide & Information

Best Spark Plugs for 5.7 Hemi Reviewed

We have reviewed and compared the best spark plugs for 5.7 Hemi. These brands offer great options for Dodge/Chrysler engine models.

The automotive spark plug delivers electric currents from the car's ignition system to the combustion chamber. To find the best spark plugs for a 5.7 Hemi, you must know what to look for.

Our review of the best spark plugs for 5.7 L Hemi looks at the available options.

By installing new 5.7 Hemi spark plugs, you ensure that your vehicle runs at optimal levels in terms of performance and efficiency.

Frequent misfires can lead to an increase in exhaust emissions, power reduction, and wasted fuel. Plus, new spark plugs improve cold starting because they require less voltage than dirty or worn-out plugs.

Additionally, replacing the spark plugs reduces the risk of needing a new catalytic converter, which can be a costly repair. You should perform a tune-up whenever your spark plugs reach the mileage limit or if you notice a decrease in performance.



Understanding 5.7 Hemi Engines

The 5.7 L Hemi engine was released in 2003 and has been installed in numerous vehicles. It produces 345 horsepower and 375 pound-feet of torque, but there is also a 340-horsepower, 390 pound-feet of torque variant. This motor made Ward's 10 Best Engines list for 2003 through 2007, and once again in 2009. It is put in the following vehicles.

  • 2003-current Ram pickup
  • 2004–2009, 2011–current Dodge Durango
  • 2005-current Chrysler 300C and 300S
  • 2006-current Jeep Grand Cherokee
  • 2006-current Dodge Charger R/T
  • 2006–2010 Jeep Commander
  • 2009-current Dodge Challenger R/T
  • 2007–2009 Chrysler Aspen

Spark Plugs for 5.7 Hemi Engines Compared

Preview

Product

Plug Coating

Type/Number

Gap

Check Price

Set of 16 Chrysler Jeep Dodge Ram 5.7 Liter...

Mopar LZFR5C11

Iridium

LZFR5C11

0.043

NGK (4469) LFR5AIX-11 Iridium IX Spark Plug...

NGK (4469) LFR5AIX-11

Iridium

4469/ LFR5AIX-11

0.043

Champion 3570 (3570) Platinum Power Spark...

Champion 3570

Platinum

3570

0.043

NGK 92174 Spark Plug

NGK 92174

Copper

92174/ LZFR5C-11

0.043

Champion Copper Plus 570 Spark Plug (Carton...

Champion RE14MCC4

Copper

570

0.043

APDTY Tune Up Kit Includes 16 OEM Spark...

APDTY

Copper

SPRE14MCC4

0.043

Choosing Quality Spark Plugs For A 5.7 Hemi Engine

Vehicle Compatibility

The best spark plugs for a 2013 Ram 1500 5.7 Hemi might be completely different from the best spark plugs for a 2011 Jeep Grand Cherokee 5.7 Hemi. Choose a brand based on your vehicle's year, make and model, along with the compatibility of the 5.7 Hemi engine.

Build Quality

Once you find the compatible spark plugs, it's time to look at how the set is constructed. After all, if cheap, sub-par components are used, the plugs won't last as long as you hope. Instead, you want spark plugs from a reputable company that puts time into the design and manufacturing process.

Spark Plug Type/Coating

What is the best type of spark plug to use on 5.7 Hemi engines? Copper spark plugs are the cheapest variety and won't last as long. However, you can spend a little more and opt for platinum spark plugs. These provide a good mix of value and service. The top of the line option is iridium spark plugs, but these also cost the most.

Lifespan/Life Expectancy of Spark plugs

Some spark plugs need to be changed every 50,000 miles. However, high-quality spark plugs can last 100,000 miles or longer. While you will spend more for these, you want to evaluate the cost on a per-mile basis. In the long run, you might spend less per mile to upgrade to the better spark plugs.

Price & Warranty

You want to keep your tune up cost minimal, which is why you search for value when buying spark plugs and the best spark plug wires for a 5.7 Hemi. Still, you don't want to choose a no-name brand because you could do more damage to your engine than good. Look for reputable brands that supply a lengthy warranty.


6 Best Spark Plugs For 5.7 Hemi Engine Reviewed

1. Mopar LZFR5C11

Product Specifications

Plug Material Coating

Iridium

Top Material

Nickel

Plug Type/Number

LZFR5C11

Gap

0.043

Compatible Vehicles

2009-2013 Dodge Ram 1500
2010-2013 Dodge Ram 2500
2011-2013 Dodge Rm 3500
2009-2013 Dodge Durango
2009-2013 Dodge Charger
2009-2013 Dodge Challenger
2009-2013 Chrysler 300
2009-2013 Jeep Grand Cherokee

If you want the best spark plugs for a 2012 Jeep Grand Cherokee 5.7 Hemi, you want to trust the Mopar brand. The performance-focused company specializes in creating OEM equipment for these engines. This set of 16 iridium spark plugs come complete with a nickel top for better conductivity. This set will fit many vehicles, including the Dodge Ram 1500, Durango, Challenger, Jeep Grand Cherokee, and more. 

Mopar replacement spark plugs are designed to give your vehicle the precise fit you need. You can count on the dependable performance, ensuring that your Hemi engine runs the way it was intended to. Additionally, you can get this complete set of 16 spark plugs for a reasonable price, even though they are rated to provide a long life. It won't cost more to perform a much-needed tune-up on your Hemi engine.

Looking at the customer reviews, you can see that owners got exactly what they expected. There is even a two-year warranty provided by Mopar, which provides more peace of mind. The only trouble that some customers faced was an incorrect thread size. If you check the compatibility of these plugs through the Garage function from Amazon, you will be able to get them warrantied if they aren't the right size.

Pros

  • Reputable manufacturer
  • 2-year warranty
  • OEM replacement
  • Durable construction

Cons

  • Improper thread size on some

2. NGK (4469) LFR5AIX-11 Iridium IX Spark Plug

Product Specifications

Plug Material Coating

Iridium

Top Material

Copper

Plug Type/Number

4469/ LFR5AIX-11

Gap

0.043

Compatible Vehicles

2008-2021 Dodge Ram 1500
2009-2020 Dodge Ram 2500
2009-2020 Dodge Ram 3500
2008-2020 Dodge Durango
2009-2020 Dodge Charger
2009-2020 Dodge Challenger
2008-2020 Chrysler 300
2008-2020 Jeep Grand Cherokee

What is the best spark plug for a 5.7 Hemi? If you are looking for the best spark plugs for a Dodge
Ram 1500 5.7 Hemi, we recommend the NGK option. These NGK copper spark plugs for a 5.7 Hemi are created with iridium for a longer life and plenty of performance. These plugs also include a fine wire center electrode that ensures maximum durability and a stable spark.

With the high melting point of the iridium alloy plugs, you get the protection needed with today's high-performance engines, such as the Hemi. Plus, these plugs include trivalent metal plating that offers more anti-seizing and anti-corrosion properties. There are also corrugated ribs, which prevent flashover. The plugs have a copper core that further aids in heat removal.

While NGK plugs are highly rated and reasonably priced, the warranty only lasts sixty days. That doesn't seem like long enough to provide protection, but customers don't seem to be complaining. In fact, this set of spark plugs gets rave reviews but only includes eight. Because of this, you will need to purchase two packs to perform a complete tune-up. Use these spark plugs for a 2011 Dodge Ram 1500 5.7 Hemi, among other models.

Pros

  • High-performance
  • Reasonable price
  • Solid construction
  • Stable spark

Cons

  • Only 60-day warranty

3. Champion 3570

Product Specifications

Plug Material Coating

Platinum

Top Material

Copper

Plug Type/Number

3570

Gap

0.043

Compatible Vehicles

2001-2010 Dodge Ram 1500
2001-2010 Dodge Ram 2500
2001-2010 Dodge Ram 3500
2001-2010 Dodge Durango
2001-2010 Dodge Charger
2001-2010 Dodge Challenger
2000-2010 Chrysler 300
2005-2010 Jeep Grand Cherokee

The best spark plugs for a 2004 Dodge Ram 1500 5.7 Hemi comes from Champion, a well-known automotive brand. The Champion spark plugs for a 5.7 Hemi are also used by many professional race car drivers, so you know they are geared toward performance. Unlike OEM spark plugs, these are made with colder heat ranges, which enable more performance and handles intense environments.

The platinum spark plug is constructed with a Yttrium-enhanced alloy that reduces the side wire temperature by 8%, further improving the durability and reducing pre-ignition. The platinum pad is also welded to nickel alloy for a longer life, so you are performing a tune-up less often. Champion is also offering a one-year warranty on the plugs, ensuring you get the protection you need against defects.

Because you can purchase these plugs individually, it's simple to get one if that's all you need. However, if you want to do a complete tune-up, you will have to purchase 16 separate spark plugs, which can become more expensive than simply choosing a complete set. If you are looking for a performance-minded option, these are the recommended spark plugs for a Dodge Ram 1500 5.7 Hemi. You should notice a difference with Champion plugs, as rated by the consumers.

Pros

  • High-performance
  • Reasonable price
  • Reliable construction
  • Highly rated

Cons

  • Must buy individually

4. NGK 92174

Product Specifications

Plug Material Coating

Copper

Top Material

Nickel

Plug Type/Number

92174/ LZFR5C-11

Gap

0.043

Compatible Vehicles

2008-2017 Dodge Ram 1500
2008-2017 Dodge Ram 2500
2008-2017 Dodge Ram 3500
2008-2017 Dodge Durango
2008-2017 Dodge Charger
2008-2017 Dodge Challenger
2008-2017 Chrysler 300
2008-2017 Jeep Grand Cherokee

If you want something that replaces the stock equipment, the best spark plugs for a 5.7 Hemi Ram might be this option from NGK. Like the other NGK spark plugs for a 5.7 Hemi, you can count on this brand's performance and reliability. These are specifically designed to replace your stock spark plugs and offer the same type of performance.

With a hotter spark, you receive better combustion. This design ensures superior performance while outputting fewer emissions. However, this set is made from copper with a nickel top, which doesn't provide as long of a life as some of the other options that we have talked about before. No one can argue about the durability and reliability that comes from the NGK brand.

However, there are some things to notice about the spark plugs for a 2012 Dodge Ram 1500 5.7 Hemi. First, this spark plug is only sold individually. To do a complete tune-up, you would need to purchase 16 spark plugs instead of getting a set. Additionally, NGK only provides a sixty-day warranty, which doesn't seem like enough protection. With that in mind, the customers continue to offer superior reviews, ensuring you get what you need.

Pros

  • OEM replacement
  • Reliable brand
  • Solid construction
  • Hotter spark

Cons

  • Only 60-day warranty

5. Champion RE14MCC4

Product Specifications

Plug Material Coating

Copper

Top Material

Nickel

Plug Type/Number

570

Gap

0.043

Compatible Vehicles

2003-2010 Dodge Ram 1500
2003-2010 Dodge Ram 2500
2003-2010 Dodge Ram 3500
2003-2010 Dodge Durango
2003-2010 Dodge Charger
2003-2010 Dodge Challenger
2005-2010 Chrysler 300
2005-2010 Jeep Grand Cherokee

The best spark plugs for a 2006 5.7 Hemi if you want a stock replacement comes from Champion. This highly-rated manufacturer creates the best spark plugs for a 5.7 Hemi Challenger. The copper construction keeps the price down while still providing plenty of performance. That's why we recommend them as spark plugs for a 2004 Dodge Ram 1500 5.7 Hemi.

The copper spark plugs are a perfect OEM replacement. The copper core center electrode allows for complete control over the heat range. They are also designed to provide superior corrosion resistance. With a one-year warranty and superior construction, you have the peace of mind you need while traveling down the road in your Dodge, Chrysler or Jeep vehicle.

This set includes four spark plugs, so you will need to purchase a few sets if you plan to do a complete tune-up. While customers have plenty of good things to say about this set, you have to remember that they aren't considered heavy-duty options. If you require long life or plan to push your vehicle to extremes, you will do better upgrading to platinum or iridium plugs instead.  Still, if you need a low-cost option, these spark plugs for a 2006 Dodge Ram 1500 5.7 Hemi should do the job just fine.

Pros

  • OEM replacement
  • Highly-rated brand
  • 1-year warranty
  • Reasonable cost

Cons

  • Lower service interval

6. APDTY

Product Specifications

Plug Material Coating

Copper

Top Material

Nickel

Plug Type/Number

SPRE14MCC4

Gap

0.043

Compatible Vehicles

2003-2005 Dodge Ram 1500
2003-2005 Dodge Ram 2500
2003-2005 Dodge Ram 3500
2004-2005 Dodge Durango

If you want to do a complete tune-up on your vehicle, you need the best spark plugs for a 5.7 Hemi Charger. We rated this as the best spark plug kit for compatible vehicles because it includes everything you will need. This set includes 16 spark plugs, eight ignition spark plug wires, and eight coil-on plug boots. Remember, not all Hemi engines use spark plug wires, so this only fits a handful of models.

The spark plugs in this kit are made from Champion, which is a common supplier for Hemi engines. You can count on durable construction without spending a crazy amount of money. However, the set does use copper spark plugs, which are not considered high-performance. You can choose to upgrade to platinum or iridium plugs instead, but you are going to have more cost involved.

Even with this complete kit, you can still count on a one-year warranty, which offers you plenty of protection. Instead of searching out all of the parts you need to do a tune-up, you save yourself plenty of time by choosing a complete kit. You might be the next customer that provides a five-star review, which seems to be the consensus.

Pros

  • OEM replacement
  • Complete kit
  • 1-year warranty
  • Highly-rated

Cons

  • Lower service interval

How Automotive Spark Plugs Work

The goal of the spark plug is to ignite the vehicle's fuel and air mixture. The electrical energy is transmitted through the spark plug while jumping the gap.

Spark plugs themselves won't create any heat but are responsible for removing it. That's why the temperature located at the end of the plug must be low enough that pre-ignition is prevented, which also reduces fouling.

Watch this explainer video for more information.


5.7 Hemi Spark Plug Replacement: Installation Guide

Changing spark plugs isn't a complicated procedure, as long as you have the right tools and a little bit of time. Here are some tips to get you started.

  1. 1
    Prepare your area and park on a flat surface.
  2. 2
    Remove one wire at a time to ensure you don't confuse the order.
  3. 3
    Attach your spark-plug socket and turn it counterclockwise until the plug is free.
  4. 4
    Ensure the proper gap of the new spark plug and install the replacement. Use a spark plug gap gauge.
  5. 5
    Connect the wire and move onto the next plug.

People Also Ask (FAQs)

Why does the 5.7 Hemi have 16 spark plugs?

How many spark plugs does a 5.7 Hemi have? The HEMI V8 engine uses two spark plugs per cylinder. Because this is an eight-cylinder engine, there are 16 spark plugs that must be replaced.

Does the brand of spark plugs matter for 5.7 Hemi engines?

Yes, you don't want to use a cheap brand of spark plugs on your Hemi engine. That's why we recommend the top brands, such as Mopar, NGK, Champion, and Bosch.

How long should a spark plug last?

Most high-performance spark plugs will last around 100,000 miles without a replacement. However, you want to reference your vehicle's service manual and follow the recommendations from the spark plug manufacturer.

Which spark plug reviewed above is best for performance?

If you want the best performance spark plugs for a 5.7 Hemi, we recommend the NGK (4469) LFR5AIX-11 Iridium IX Spark Plug model. These performance spark plugs for a 5.7 Hemi offer a long service life and reasonable price.

What are spark plug wires?

Spark plug wires aren't on every vehicle, but they connect the ignition coil or distributor to the spark plugs.

How often should spark plugs be replaced on my 5.7 Hemi engine?

It depends on what the service manual for your vehicle recommends and what type of spark plug you are using. You might be able to get 100,000 miles or more out of high-quality spark plugs.

How does a spark plug impact emissions?

Damaged and fouled spark plugs create an increase in hydrocarbon and carbon monoxide emissions. When you replace the 5.7L Hemi spark plugs, you can reduce the emissions while also improving performance.

Where is the best place to buy replacement spark plugs for 5.7 Hemi engines?

When dealing with all of your automotive parts and accessories, including spark plugs or Ram 2500 lift kits, we always recommend Amazon. You can find an extensive selection at reasonable prices and match up the product to your vehicle with the Garage feature.


Conclusion

What are the best replacement spark plugs for a 5.7 Hemi Engine? We prefer the Mopar LZFR5C11 because they are constructed from the factory and increase the Hemi engine performance.

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