The best spark plugs in the market are made from iridium and double platinum, and anything less will not only need quick replacement, it will also cause your car to experience reduced performance.
Even though a spark plug is only a small part of a vehicle’s engine system, it plays a massive role in ensuring a great engine start as well as overall performance. The 5.7 Hemi engine, which is made by Chrysler, is one of the most popular V8 twin block engines. It is a powerful machine that delivers at least 390 Horsepower. To power this beast up, you need high quality spark plugs that have the capacity to generate powerful sparks, resist extreme heat and withstand a good deal of pressure. Seeing as there are many brands in the market currently, we went on to compile a list of some of the best spark plugs for the Dodge RAM 1500 5.7 Hemi.
The Best Spark Plugs for Dodge RAM 1500 5.7 Hemi Comparison Table
Spark Plug Brand |
Material |
Special Feature |
Action |
NGK LFR5AIX-11 Iridium IX Spark Plugs |
Iridium |
Long Insulator Nose |
|
Mopar Chrysler, Jeep, Dodge RAM 5.7 Hemi Spark Plugs |
Nickel |
Superior voltage amplification |
|
ACDelco Gold 20 RAPIDFIRE Spark Plug |
Platinum |
Pure copper core |
|
Bosch 9620 Double Iridium Pin to Pin Spark Plug |
Iridium |
Double Iridium Firing Pin |
|
Autolite AP5325-4PK Platinum Spark Plug |
Platinum |
Yttrium enhanced |
|
Bosch Automotive Double Platinum Spark Plug |
Double Platinum |
360° laser welding |
|
ACDelco 41-993 Professional Iridium Spark Plug |
Iridium |
Fine wire electrode |
The Best Spark Plugs for Dodge RAM 1500 5.7 Hemi – Products Review
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NGK LFR5AIX-11 Iridium IX Spark Plugs–Made using iridium
- Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling
- The 0.6mm 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
- Trivalent metal plating has superior anti-corrosion and anti-seizing properties
These spark plugs are arguably the most ideal and practical devices for using on a massive engine such as the Dodge RAM 1500 5.7 Hemi.
Key features
- Made from iridium
- Long insulator nose
- Does not require gapping
- Fin wire electrodes
If ever you desire to buy the best spark plugs for your car, Dodge RAM or otherwise, go for iridium made plugs. Iridium is a highly durable and heat resistant material, and even though expensive, you and your car will be glad about your choice.
This spark plug was made to handle performance like a champion. It generates an incredibly strong and powerful spark which prompts the engine to start immediately and smoothly. It does this without requiring too much from your battery, a characteristic that drastically reduces the strain on the car’s electrical system. This feature is mostly made possible and relevant by the plug’s long insulator nose that leads to hotter plug temperature.
The fact that it uses fine wire electrodes causes for a smooth engine, both while on high power and when idling. This spark plug is able to enhance fuel efficiency, and it also accords the engine an ability to sustain commendable heat expansion. In case you do not fancy having to make alterations to a spark plug or the setup of your vehicle, this spark plug set will be a great purchase for you since it comes ready to use. It needs no gapping, and all you have to do is buy, install and drive.
Pros
- Made using iridium which is durable
- Generates a powerful spark for a quick and smooth start
- Maintains high plug temperature
- Comes gapped
- Supports fuel efficiency
Cons
- These spark plugs are quite pricy
Verdict
If you want to get your vehicle nothing but the best, get the NGK LFR5AIX-11 Iridium IX Spark Plugs. They are hardy, durable, extremely practical and efficient, and they are also incredibly versatile. You may have to pay a little extra for them, but every coin spent is worth the purchase.
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Mopar Chrysler, Jeep, Dodge RAM 5.7 Hemi Spark Plugs– Made using Nickel
Even though they are not made by a particularly popular brand, these spark plugs are some of the best and most reliable OE plug replacements in the market right now.
Key features
- Made from nickel
- Deliver superior voltage amplification
- Withstand high stress
- Generate powerful sparks
When installed in your 5.7 Hemi engine, the Mopar Chrysler, Jeep, Dodge RAM 5.7 Hemi Spark Plugs work to enhance the overall working ad performance of your engine. They are made using Nickel which is not a particularly common material, especially since there are other metals such as platinum and iridium in the market.
However, these spark plugs are able to generate a powerful spark, a characteristic that supports quick and seamless engine start while requiring very little power from the battery. This means that you will cause little to no strain on the overall electrical system of your vehicle. In addition, the are able to increase fuel efficiency in your car.
Most impressive is this spark plug’s ability to resist wear and tear. They feature a strong coating that is able to resist heavy corrosion and abrasion for long periods of time. This coating also eliminates the need for using anti-seize on the plugs since it resists seizing with grace.
The main down side to using this spark plug model is that it may not last as long a period as other iridium and double platinum spark plugs, but it will definitely deliver great performance within the period you are going to have a set installed.
Pros
- Extremely practical and versatile
- Can withstand a lot of stress
- Generates a powerful spark
- Encourages fuel efficiency
- Resists corrosion, abrasion and seizing
Cons
- Does not last as long as iridium and double platinum spark plugs
Verdict
In case you want good quality spark plugs that will fit excellently into your Dodge RAM 1500 5.7 Hemi but cannot necessarily afford to go the iridium way, you can settle for the Mopar Chrysler, Jeep, Dodge RAM 5.7 Hemi Spark Plugs which are made to replace OE plugs. The generate powerful spark and also handle a good deal of stress, and you and your machine will be happy to have them.
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ACDelco Gold 20 RAPIDFIRE Spark Plug – Made using Platinum
- Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures
- Pure copper core provides great heat transfer and helps maximize plug durability
- Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system
- Ribless insulator helps optimize plug to boot seal
- Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
With a pure copper core, this spark plug is able to handle extreme heat with grace and composure, making certain that the plug’s temperature is at the recommended average at all times.
Key features
- Made using platinum
- Has platinum center electrode
- Regulates spark energy
- 100% pure copper core
The narrative surrounding the best spark plugs is their ability to generate extremely powerful sparks. While this advantage is irrefutable, it is important to note that the consistent generation of powerful sparks often times causes the plug’s electrode to get damaged real quick. This is why the ACDelco Gold 20 RAPIDFIRE Spark Plug stands out since it is able to regulate the spark’s power.
Bear in mind that this does not necessarily mean that it generates weak sparks. It simply means that the sparks are powerful enough to deliver a quick and seamless start while still protecting the electrode from fast damage. This ability also places very little strain to the electrical system of your vehicle.
The most impressive feature of this spark plug, however, is its pure copper core. This characteristic gives it the ability to maximize on heat transfer while also maintaining the recommended level of heat within the plug. This also keeps the electrode from sustaining damage too fast, as well as preventing the occurrence of misfiring.
As a double platinum spark plug, this device strikes a balance between exceptional performance, longevity and affordability, allowing your vehicle to experience unmatched spark power and fuel efficiency while still delivering long service.
Pros
- Has the ability to regulate spark energy
- Has a pure copper core for unmatched heat transfer
- Causes very little strain to the battery
- Lasts a good deal of time
- Quite affordable
Cons
- Cannot outlast iridium spark plugs
Verdict
This spark plug was made with both performance and longevity in mind. It has the ability to improve the overall performance of your engine while still preventing unnecessary damage and strain to the battery and its own core. Even though it cannot last as long as iridium spark plugs, this device is easily one of the best for the Dodge RAM 1500 5.7 Hemi.
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Bosch 9620 Double Iridium Pin to Pin Spark Plug – Made using iridium
- Double Iridium firing pin and ground electrode pin provide 4X longer service life compared to standard copper plugs
- 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
- Original equipment, pre-gapped replacement delivering optimum fit, form and function
With this spark plug, you will enjoy up to 4 times longer life span than regular platinum and copper spark plugs in the market.
Key features
- Double iridium firing pin
- 360° laser weld
- Comes pre-gapped
- 6mm fine wire
The performance on this spark plug is so good, the manufacturers give a 7 year satisfaction guarantee to all vehicle owners who use it. With its double iridium firing pin, the Bosch 9620 Double Iridium Pin to Pin Spark Plug is able to do a stellar job, delivering a seamless start to the engine and supporting a smooth run.
It is able to generate a powerful spark, preventing you from having to ignite your vehicle severally without achieving a good start. The ability to have a successful ignition with the first try enhances the lifespan of your spark plugs a good deal. Most impressive though, is that it has the capacity to deliver a powerful spark without necessarily demanding a lot from the battery. This preserves the electrical system since very little is drawn from it during ignition.
We cannot overlook the fact that it has a 360° laser weld that works as an incredible protectant for the spark plug. It keeps it from sustaining damage from corrosion and abrasion as well as exposure to extreme heat. Its 0.6mm fine wire makes for a smooth engine even when it is running really fast and also during idling.
One reason for its extreme popularity is that it comes pre-gapped, eliminating the need for you to make any major alterations before installing it. All you have to do is buy, install and drive your car.
Pros
- It is extremely durable
- Generates powerful sparks
- It is a low voltage device
- It comes gapped
- Has a 360° laser weld
Cons
- It may not be compatible with older vehicle models
Verdict
This spark plug is one of the most reliable devices for massive engines, especially for newer models. It is my go-to device and I like how practical and versatile it is. What does it for me is the longevity that I enjoy, and what’s more, I do not have to make any alterations to it before installation.
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Autolite AP5325-4PK Platinum Spark Plug – Made using platinum
- 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
- 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
This spark plug comes with a full platinum tip which has the ability to handle extreme heat and to deliver long plug life.
Key features
- Full platinum tip
- Yttrium enhanced
- Platinum alloy pad for ground electrode
- Nickel-plated steel shell
As mentioned earlier, platinum spark plugs come second to iridium where longevity and practicality is involved, and the Autolite AP5325-4PK Platinum Spark Plug does not disappoint in this regard. Even the tip is made using platinum, and this proves helpful since it prevents the occurrence of gap erosion, allowing for the spark plug to last a good amount of time.
As expected, it is able to generate a high power spark, enhancing engine start and eliminating the chances of misfiring. When using this device, you will also be in a position to enjoy increased fuel efficiency and lower strain on your battery. The electrical system does not end up overworking since the plug is able to generate sparks on low voltage. It also causes your vehicle to respond better to the throttle, delivering almost instantaneous acceleration when required.
For protection against fast damage, this spark plug features a nickel-plated steel shell which is able to resists corrosion and abrasion which reduce the gadget’s life span significantly. I like that it comes pre-gapped, meaning that you do not have to worry about making adjustments and alterations so that it fits in your Dodge RAM 1500 5.7 Hemi engine.
Pros
- It comes with a full platinum tip
- Does not require too much power to generate a spark
- Increases fuel efficiency
- Resistant to corrosion and abrasion
- Comes pre-gapped
Cons
- May not fit into all vehicle models
Verdict
This spark plug packs a lot of perks, and you are bound to reap a good deal of advantages from using it. It does not strain your electrical system, and it also enhances fuel economy as well as encouraging better response during acceleration. The fact that it is a durable device only adds spice to it.
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Bosch Automotive Double Platinum Spark Plug – Made using double platinum
- Double Platinum firing pin and ground electrode inlay provide 3X longer service life compared to standard copper plugs
- Fine wire design provides excellent ignitability and performance
- 360° continuous laser welding to fuse the platinum firing pin for increased durability
- 5 year performance satisfaction guarantee
- Original equipment, pre-gapped replacement delivering optimum fit, form and function for a wide range of vehicles including, but not limited to, the following:
The fact that this spark plug enjoys 360° laser welding gives it the ability to resist damage through corrosion and abrasion, giving it a good deal of life.
Key features
- Made using double platinum
- OE fine wire design
- 360° laser welding
- Generates powerful spark
When it comes to practicality and durability, Bosch has managed to stay ahead of the game where spark plugs and other products are concerned. With a double platinum build, the Bosch Automotive Double Platinum Spark Plug delivers on hardiness and durability like a champ.
The ground electrode and firing pin are both covered in premium double platinum allowing for high power delivery along with incredible damage resistance. What we fancy about this device is that it bears the capacity to deliver powerful sparks consistently while withstanding a good deal of heat. In addition, it does not require too much power from the battery, preserving the electrical system of your car from too much strain.
This spark plug is made to prevent misfiring, and to prompt an effective engine start. Like most other plugs of its caliber, it works to improve the fuel efficiency of your car, as well as encouraging better acceleration response when you step on the gas. Most impressively, this spark plug is able to deal with extremely cold environments, eliminating the frustration that comes with cold starts during extremely cold seasons.
Seeing as it boasts 360° laser welding, this spark plug is able to resist damage brought about by corrosive and abrasive matter, allowing it to maintain its functional integrity as long as 5 years.
Pros
- Generates a powerful spark
- Does not require high voltage
- Comes with 360° welding for anti-corrosion and anti-abrasion properties
- Great for cold starts
- Lasts up to 5 years
Cons
- It is a bit expensive
Verdict
Even though it is not made from iridium, this double platinum spark plug ensures that you enjoy a good deal of service once installed in your vehicle. If cold starts have been a massive problem for you in the past, this small device will almost certainly see to it that you enjoy smooth starts even in the harshest conditions. Keep in mind also, that you need a good quality oil to help with this.
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ACDelco 41-993 Professional Iridium Spark Plug – Made using iridium
- Iridium offers better engine idle stability and smoother performance
- Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration
- 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
Featuring a fine wire electrode, this spark plug is able to deliver smooth starts and engine functions with unmatched prowess.
Key features
- Made from iridium
- Fine wire electrode
- Suppressor seal for blocking radio frequency interference
- Regulates spark energy
While it is always a big advantage to have a spark plug that generates a powerful spark for quick and easy ignition, it is more important to have one that actually regulates the power of this spark to prevent the electrode from sustaining damage too quickly. The main reason for this regulation is to make sure that the spark is powerful enough to start the engine, but moderate enough to keep the electrode working.
However, what makes this spark plug brand stand out the most is the fact that it is made using iridium. It is nearly impossible for us to stress just how advantageous it is to have an iridium spark plug is. You will be able to enjoy better engine stability and smoothness during high performance and during idling, all thanks to iridium.
This smoothness is also supported by the presence of a fine wire electrode that maximizes on high heat transfer while maintaining its own integrity. This is electrode is also able to maintain optimum spark plug temperature which ensures long service.
In addition, it features a single suppressor seal that keeps out all forms of electromagnetic interference which has the potential to interfere with the vehicle’s electrical setup. On top of this, this seal prevents all forms of combustion leakage, a characteristic that contributes to lessened carbon emissions during fuel combustion.
Pros
- Made from iridium
- Regulates spark power to keep electrode from getting damaged
- Has a fine wire electrode
- Comes with a suppressor seal for reduced electromagnetic interference
- Reduces carbon emissions during combustion
Cons
- May not fit into all engine types
Verdict
Besides the fact that this spark plug performs exceptionally well, it is also able to enhance the overall working of the engine, delivering an instant start and maintaining a smooth run. Being that it is made from iridium, it is able to deliver a good deal of longevity, meaning that you do no have to worry about replacing it too soon.
Buying Spark Plugs for your Dodge RAM 1500 5.7 Hemi – What to look out for
Here are a couple things to keep an eye out for when getting spark plug for your Dodge RAM 1500 5.7 Hemi.
Plug material
There are many plug types available currently, ranging from copper, platinum, double platinum and iridium. While copper is the most common, it does not give much longevity. The best spark plugs are made from iridium, platinum and double platinum.
Engine Compatibility
There is only a set number of plugs that can go into the Dodge RAM 1500 5.7 Hemi, and for this reason, it is imperative that you find a spark plug that is compatible. Make certain to find out what is suitable and what is not.
Number of plugs in a pack
Bear in mind that a Dodge RAM 1500 5.7 Hemi is designed to have 16 plugs at a time. Be certain that your chosen pack will be enough for as many replacements as you need to make.
Final Verdict
Great engine performance is always backed up by the presence of highly efficient engine parts, and even though spark plugs are really small when compared to the size of the whole engine block, they play an incredibly crucial role in ensuring good performance. The truth is that there are many models all over, but it takes a keen eye and a good deal of research to find the best. We have tried to eliminate the stress for you by documenting the above spark plug features and merits, and we trust that any one of them will definitely give you and your beast exceptional service!
Allan Davis
Allan Davis is an expert at car maintenance. He has been working in this industry for years and thus has a lot of experience handling different car models. The expert believes that the lifespan of your vehicle depends on how well you maintain it. Therefore, he reiterates the importance of regular inspections of different car parts such as rotors, brake pads, engine, tires, and wheels to confirm that they are in excellent condition. According to Allan, simple malfunctions of different components can lead to accidents. Taking care of your car, on the other hand, can make you a great driver. He hopes that the information he has provided above can help you maintain your car accordingly.
