Best Spark Plugs for 5.7 Hemi Charger

I remember the first time I pulled the plugs on my 5.7 Hemi Charger—it was a job, and choosing the replacements felt overwhelming. If you drive one of these powerful machines, you know maintaining peak performance is key, especially since the Hemi uses 16 plugs! This detailed guide dives deep into the best spark plugs for your 5.7 Hemi Charger, comparing the top iridium and copper options so you can choose the right set for reliable power and crisp throttle response.

IMAGE	PRODUCT NAME	AMAZON LINK
	16 pc Champion Iridium Spark Plugs compatible with Dodge…	View on Amazon
	Ignition Coil Pack Spark Plugs fit for 5.7 Hemi Dodge…	View on Amazon
	16 pc NGK Laser Iridium Spark Plugs compatible with Dodge…	View on Amazon
	8x Ignition Coil Pack and 16x Iridium Spark Plugs Fit…	View on Amazon
	16 pc NGK Standard Spark Plugs compatible with Dodge…	View on Amazon
	16 pc NGK Iridium IX Spark Plugs compatible with Dodge…	View on Amazon
	16 pc Champion Copper Plus Spark Plugs compatible with…	View on Amazon
	Autowxjq Iridium Spark Plug 16pcs Replace Chrysler Dodge…	View on Amazon
	16 pc NGK Iridium IX Spark Plugs compatible with Ram…	View on Amazon
	GBTAD Upgraded 8x Ignition Coil Pack and 16x Iridium…	View on Amazon

16 pc Champion Iridium Spark Plugs compatible with Dodge Charger 5.7L V8 2009-2019

If you want OEM quality with an upgrade in material, these Champion Iridium plugs are an excellent choice for your Charger. Champion has a long-standing history in performance, and these plugs are built to meet or exceed original equipment standards. The durable iridium construction minimizes wear and tear, ensuring that you get long-lasting performance without frequent replacements. This 16-piece set covers every cylinder, making it a complete solution for your routine maintenance.

Key features that stand out:
– Precious Metal Build: Uses durable iridium for improved performance and longevity.
– Complete Set: Comes as a 16-pack, which is necessary for the dual-plug 5.7L Hemi design.
– OE-Quality Replacement: Adheres to tough industry standards for a seamless fit and reliability.

• Pros:
• Exceptional long-term durability thanks to the iridium tip.
• Proven brand reputation in performance engines.
• Direct replacement fit for 2009-2019 models.
• Cons: Installation is still labor-intensive due to the Hemi design.
  Best for: Drivers seeking OE fitment coupled with the maximum service life iridium offers.

Expert Opinion: While copper is often specified for maximum spark intensity in some modified engines, iridium is the hands-down winner for daily driving longevity and resisting electrical wear over high mileage.

Ignition Coil Pack Spark Plugs fit for 5.7 Hemi Dodge Ram 1500, Chrysler 300, Challenger Charger Durango, Jeep Commander Grand Cherokee, 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Sometimes, replacing just the spark plugs isn’t enough, especially if your Hemi is experiencing rough idling or misfires that point toward the ignition system itself. This package provides a fantastic value by bundling 8 new ignition coil packs with the required spark plugs. Replacing both components simultaneously ensures that you achieve a smoother and more efficient ignition system right out of the box, helping to solve common issues like poor fuel economy and hard starting.

Key features that stand out:
– Full Ignition System Overhaul: Includes 8 coil packs (UF504 part number) plus spark plugs.
– Value Combo: Solves issues related to worn-out plugs and failing coils in one go.
– Wide Compatibility: Fits 5.7L V8 Hemi models across many platforms from 2009–2020.

• Pros:
• Excellent remedy for misfires and rough engine idle.
• Meets or exceeds OEM specifications for reliability.
• Cost-effective way to refresh the entire ignition system.
• Cons: The quality of the included spark plugs might not match premium standalone iridium options.
  Best for: Owners addressing current misfire issues who need to replace both coils and plugs simultaneously for maximum diagnostic clarity.

Expert Opinion: When doing major maintenance, especially over 100,000 miles, replacing the coils with the plugs is preventative and highly recommended to maintain peak performance on these high-compression engines.

16 pc NGK Laser Iridium Spark Plugs compatible with Dodge Charger 5.7L V8 2009-2020

NGK is a globally recognized leader in ignition technology, and their Laser Iridium line represents the pinnacle of long-life spark plugs. Designed for durability and consistent spark delivery, these plugs use both a fine wire iridium center electrode and a platinum ground electrode for minimal gap erosion. If you are looking for the absolute longest lifespan and best performance reliability between changes, NGK Laser Iridium is often considered the gold standard for high-performance vehicles like the Hemi Charger.

Key features that stand out:
– Dual Precious Metal Design: Iridium center tip and platinum ground disc for extreme wear resistance.
– Maximum Lifespan: Engineered specifically for extended OE service intervals.
– Genuine NGK Quality: Direct replacement auto parts, assuring proper fitment and performance.

• Pros:
• Superior resistance to fouling and wear.
• Provides consistent spark over an extended period.
• Proven performance gain and engine smoothness.
• Cons: These plugs come at a higher price point than standard iridium or copper plugs.
  Best for: Performance enthusiasts and those who prioritize maximum longevity and don’t want to touch their plugs again for 100,000 miles.

Expert Opinion: Laser Iridium plugs are typically specified by manufacturers for modern engines due to their stability and ability to handle the higher cylinder pressures seen in the 5.7 Hemi.

8x Ignition Coil Pack and 16x Iridium Spark Plugs Fit for 5.7 V8 HEMI 2009 2010 2011 2012 2013 2014 2015 Dodge Ram 1500 2500 3500 Charger Challenger Durango Jeep Cherokee Commander Chrysler 300 Aspen

This comprehensive kit by LCWRGS offers the benefit of replacing all 16 spark plugs and all 8 ignition coils in one package, focusing on premium performance. What sets this kit apart is the inclusion of Iridium spark plugs, which means you get better longevity combined with the enhanced performance of new coils. The company claims an upgrade, offering up to 15% more energy than OE coils, which can translate into a noticeable improvement in throttle response and fuel economy after installation.

Key features that stand out:
– Iridium Plug Inclusion: Combines the durability of Iridium with new coils.
– Performance Enhancement: Coils are designed to upgrade power output over factory units.
– Complete Coverage: All necessary parts (16 plugs, 8 coils) for a full ignition refresh.

• Pros:
• Fixes ignition-related issues while adding durable iridium plugs.
• High-quality copper wire and epoxy in the coils ensure durability.
• Direct OEM design makes installation straightforward.
• Cons: Non-OEM components sometimes require careful monitoring during the first few thousand miles.
  Best for: The driver looking for a powerful ignition refresh bundle that utilizes long-life iridium plugs.

Expert Opinion: The claim of “15% more energy” is often relative, but new coils, especially paired with fresh iridium plugs, will always result in a vast improvement over failing, old ignition parts.

16 pc NGK Standard Spark Plugs compatible with Dodge Charger 5.7L V8 2009-2017

If you prefer the simplicity and affordability of a standard plug while still relying on the quality of a major manufacturer like NGK, this copper set is a strong contender. Copper provides the absolute best conductivity, offering the hottest, most efficient spark possible. While copper plugs require much more frequent replacement (typically 30,000 miles or less), they are an excellent, budget-friendly option for the driver who is meticulous about maintenance or for those who prioritize maximum spark energy over longevity.

Key features that stand out:
– Maximum Conductivity: Copper core allows for the most intense spark.
– Affordable Quality: NGK reliability at a standard plug price point.
– Genuine Parts: Direct replacement for 2009-2017 Hemi Chargers.

• Pros:
• Lowest cost per plug compared to iridium or platinum.
• Ideal for maximizing spark intensity, often preferred in forced-induction or heavily modified engines.
• Consistent, quality performance during their lifespan.
• Cons: The necessary replacement interval is significantly shorter than that of precious metal plugs.
  Best for: Budget-conscious maintenance or enthusiasts who don’t mind changing plugs every 30,000 miles to keep the spark fresh.

Expert Opinion: While many modern drivers choose iridium for convenience, copper remains the benchmark for raw spark energy and is a perfectly viable choice for the 5.7 Hemi if routine maintenance is strictly followed.

16 pc NGK Iridium IX Spark Plugs compatible with Dodge Charger 5.7L V8 2009-2020

The NGK Iridium IX line sits comfortably between the standard copper plug and the top-tier Laser Iridium, offering an excellent balance of performance and extended service life. These plugs are designed with a fine-wire center electrode for high ignitability and reduced spark voltage requirements. They are a step up from OEM platinum plugs in terms of performance and corrosion resistance, making them a popular choice for modified Chargers that see aggressive street driving.

Key features that stand out:
– High Ignitability: Fine-wire Iridium tip promotes better starting and smoother idle.
– Performance Focused: Designed to improve combustion efficiency.
– Wide Coverage: Compatible with 5.7L Hemi Chargers from 2009 all the way up to 2020.

• Pros:
• Great balance of longevity, performance, and price point.
• Excellent resistance to carbon build-up and fouling.
• Promotes sharper throttle response compared to standard plugs.
• Cons: They do not offer the full 100k mile lifespan guarantee found with Laser Iridium plugs.
  Best for: Drivers wanting a performance edge without the high cost of the top-tier Laser Iridium.

Expert Opinion: Iridium IX plugs are often the sweet spot—they handle heat well, last a long time, and offer the required focused spark for modern multi-displacement engines.

16 pc Champion Copper Plus Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck

Although this specific listing targets the Ram 1500, Champion Copper Plus plugs are widely recognized as the original equipment style plug for many older Hemi generations and remain a reliable, economical option. As a genuine Champion part, you trust in the brand’s expertise in manufacturing OE components. Copper plugs deliver dependable performance and are perfect if you are looking to save money upfront and maintain the original characteristics of the engine’s ignition.

Key features that stand out:
– OE Heritage: Champion is a traditional supplier for many American V8s.
– Reliable Performance: Copper core ensures consistent, strong spark.
– Budget Friendly: Offers the lowest upfront cost for a complete 16-plug change.

• Pros:
• Trusted, genuine Champion quality.
• Simplest and most affordable replacement option.
• Strong spark capability due to copper conductivity.
• Cons: Expect to change these plugs every 30,000 miles to maintain optimal engine health.
  Best for: Owners seeking the most cost-effective, genuine copper plug for standard performance.

Expert Opinion: If you maintain your vehicle religiously and are looking to flash tune your Charger for maximum output, copper’s superior conductivity makes it a surprising choice for track use, despite its short lifespan.

Autowxjq Iridium Spark Plug 16pcs Replace Chrysler Dodge Jeep Ram 4.7L 5.7L 6.4L V8

For those looking for a high-quality, aftermarket iridium plug solution with a great warranty, the Autowxjq set is worth considering. The major convenience factor here is that these plugs are confirmed as pre-gapped and ready for direct installation—a huge time saver when you’re installing 16 plugs. Iridium’s high melting point makes these plugs extremely durable, handling the heat and stress of the 5.7L Hemi effectively.

Key features that stand out:
– Pre-Gapped Design: Install directly out of the box, saving manual adjustment time.
– Robust Iridium Construction: High durability to electrical wear.
– Strong Warranty: Backed by a 2-year warranty and free replacement service.

• Pros:
• Installation is streamlined thanks to the pre-gapped electrodes.
• Excellent durability comparable to name-brand iridium.
• Attractive warranty provides peace of mind.
• Cons: This is an aftermarket brand, and long-term mileage feedback may be less widespread than NGK or Champion.
  Best for: DIYers who want the convenience of a pre-gapped iridium set for a quick installation.

Expert Opinion: Always double-check the gap, even if the plug is pre-gapped. While the pre-gap feature is convenient, shipping vibrations can sometimes alter the setting slightly, which is critical for Hemi operation.

16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck

Similar to the Charger-specific listing (Product #6), this set ensures you receive genuine NGK Iridium IX quality, designed to significantly reduce emissions and misfires. NGK uses advanced center and ground electrodes to produce complete and efficient combustion. If you are experiencing poor engine efficiency or minor misfires, these durable plugs are engineered to restore your Hemi’s smooth running by ensuring a powerful, consistent spark throughout their long life cycle.

Key features that stand out:
– Misfire Reduction: Engineered design promotes sharper spark focus.
– Improved Combustion: Advanced electrodes maximize spark efficiency and combustion completeness.
– Damage Tolerance: Center and ground electrodes minimize gap growth over time.

• Pros:
• Highly durable construction ensures long life.
• Exceptional performance boost over worn-out OE plugs.
• Reduces strain on the ignition coils by improving ignitability.
• Cons: The initial cost is higher than copper alternatives.
  Best for: Owners prioritizing stable engine performance and long-term ignitability with genuine NGK reliability.

Expert Opinion: Iridium IX plugs perform excellently with the 5.7L Hemi’s MDS (Multi-Displacement System) since they maintain a very stable gap, reducing the chance of misfires when cylinders deactivate.

GBTAD Upgraded 8x Ignition Coil Pack and 16x Iridium Spark Plug for 5.7L V8 HEMI Dodge Ram 1500 2500 3500 Charger Durango Chrysler 300 Jeep Grand Cherokee 2006-2015 Replaces UF504

This GBTAD package is the highest-rated performance bundle, claiming an 18% performance boost through its enhanced coils and included Iridium plugs. Like other bundled kits, this replaces the full set of 8 coils and 16 spark plugs, ensuring a completely refreshed ignition system. The coils are precision-engineered with aerospace-grade copper wires, translating to superior conductivity and higher output necessary for peak Hemi performance.

Key features that stand out:
– Highest Performance Claim: Advertised 18% performance boost from coils.
– Premium Build Quality: Uses aerospace engineering grade copper wires in coils.
– Extensive Compatibility: Fits Hemi 5.7L models from 2006 through 2019.

• Pros:
• Significant potential upgrade in engine efficiency and power delivery.
• Excellent quality assurance and after-sales support.
• Iridium plugs maximize the life of the high-output coils.
• Cons: The very broad compatibility range requires double-checking your specific sub-model years carefully.
  Best for: The driver who wants the highest output bundle available, seeking a measurable performance improvement along with new coils.

Expert Opinion: When installing high-output coils, ensure your battery and charging system are healthy, as improved performance often means slightly higher current draw, especially under aggressive driving conditions.

Comparison Insights on Best Spark Plugs For 5.7 Hemi Charger.

Choosing the right plug for your 5.7 Hemi Charger often comes down to balancing cost, longevity, and maintenance frequency.

For drivers prioritizing maximum durability and convenience, the NGK Laser Iridium and the Champion Iridium plugs are the clear winners. These precious metal options are engineered to last 80,000 to 100,000 miles, making the initial investment worthwhile by drastically reducing the frequency of replacement. Laser Iridium (Product #3) is generally considered the top choice for ultimate longevity.

If you are a performance purist or on a tight budget, copper plugs like the Champion Copper Plus (Product #7) or NGK Standard (Product #5) provide the best spark conductivity. However, remember this requires a commitment to replacing all 16 plugs every 30,000 miles to avoid power loss and misfires.

If your Hemi is suffering from rough idle, hesitation, or confirmed misfire codes, look directly at the comprehensive bundled kits. The 8x Coil/16x Plug combos (Products #2, #4, and #10) provide the greatest value and guarantee a complete refresh of the ignition system. The GBTAD Upgraded Coil/Plug set (Product #10) and the LCWRGS kit (Product #4) stand out by offering Iridium plugs paired with enhanced coils for superior long-term results compared to basic kits.

Finally, the NGK Iridium IX (Products #6 and #9) offers a fantastic middle ground—significantly better performance and lifespan than copper, but at a more palatable price point than the top-tier Laser Iridium plugs.

Final Verdict: Our Hemi Charger Recommendations

Making the right choice for your powerful 5.7L Hemi means matching the plug type to your driving style and maintenance goals.

If you want the “set it and forget it” option with maximum lifespan, the 16 pc NGK Laser Iridium Spark Plugs (Product #3) are the definitive choice. They handle heat perfectly and are designed to go the distance, minimizing wrench time.

For the best balance of longevity and cost-effectiveness, we strongly recommend the 16 pc NGK Iridium IX Spark Plugs (Product #6). This plug offers high performance and a long life without the premium price tag of the Laser series.

If your engine is throwing codes and needs a full reset, the comprehensive GBTAD Upgraded 8x Ignition Coil Pack and 16x Iridium Spark Plug (Product #10) offers the most aggressive upgrade path, ensuring maximum power delivery and ignition stability from both new coils and long-life iridium plugs.

Comprehensive FAQs About Best Spark Plugs for 5.7 Hemi Charger

Why does the 5.7 Hemi Charger require 16 spark plugs?

The 5.7L Hemi engine uses a dual spark plug design, meaning two spark plugs per cylinder, totaling 16 plugs for the V8 engine. This design was implemented primarily to increase combustion efficiency, reduce emissions, and maximize horsepower. It also helps stabilize combustion during the operation of the MDS (Multi-Displacement System), where cylinders deactivate.

What is the recommended spark plug replacement interval for the 5.7 Hemi?

This depends heavily on the plug material:
* Copper Plugs: Should be replaced frequently, typically every 30,000 miles.
* Iridium or Platinum Plugs: These are designed for extended service and generally last 80,000 to 100,000 miles. Always check your Charger’s owner manual or the plug manufacturer’s specific recommendation.

Should I choose Copper, Platinum, or Iridium spark plugs for my Charger?

• Iridium (Recommended): Offers the longest life, high durability, and excellent performance stability, ideal for daily driving. Products like NGK Laser Iridium are premium options.
• Copper: Provides the best conductivity and hottest spark, preferred by some tuners, but requires much more frequent replacement.
• Platinum: A good middle ground but generally less durable than Iridium and often surpassed by high-quality Iridium plugs today.

What spark plug gap size is required for the 5.7L Hemi?

The standard gap for the 5.7L Hemi typically ranges between 0.043 inches (1.1 mm) and 0.045 inches (1.14 mm). It is absolutely crucial to confirm the exact specification in your vehicle’s manual for your specific year and engine configuration before installation. Always check the gap on all 16 plugs, even if they are listed as “pre-gapped.”

Is it necessary to replace the ignition coils when replacing the spark plugs?

It’s not strictly necessary every time, but it is highly recommended, especially if your Charger has over 100,000 miles or if you are experiencing misfires. Worn-out spark plugs can strain the ignition coils over time. Replacing both (as seen in the bundled kits) ensures optimal ignition system health and prevents potential failure down the road.

Will replacing the spark plugs improve my Hemi Charger’s performance or fuel economy?

Yes, replacing old, worn-out spark plugs with fresh, quality ones will absolutely restore lost performance and improve fuel efficiency. Old plugs can lead to incomplete combustion, causing misfires, hesitation during acceleration, and requiring the engine to use more fuel to produce power.