Looking for the best spark plugs for your Ram 6.4 Hemi? Upgrading or replacing your spark plugs is a critical step in maintaining engine performance, fuel efficiency, and reducing emissions. This guide highlights top-rated options specifically engineered for the 6.4L HEMI V8, ensuring reliable ignition and long-term durability.
List of 7 Best Best Spark Plugs For Ram 6.4 Hemi
| Image | Title | Best For | Link |
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AIP Electronics Dragon FIRE Kit-1565 | The high-performance iridium spark plugs & ignition coils for dodge jeep chrysler ram v8 engine… more | View on Amazon |
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NGK Iridium IX 16pc | The ngk iridium ix spark plugs for ram 2500 5.7l 6.4l v8 2011-2020 offers exceptional quality a… more | View on Amazon |
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Champion Copper Plus 16pc | The champion copper plus spark plugs for ram 2500 5.7l 6.4l v8 2011-2019 offers exceptional qua… more | View on Amazon |
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NGK Iridium IX V8 Set | The ngk iridium ix spark plugs for chrysler dodge jeep ram 5.7l 6.4l v8 offers exceptional qual… more | View on Amazon |
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NGK Iridium IX 16pc | The ngk iridium ix spark plugs for ram 1500 5.7l hemi v8 2011-2024 offers exceptional quality a… more | View on Amazon |
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TRQ Iridium 16pc Kit | The trq iridium spark plugs & tune-up kit for chrysler dodge ram jeep 5.7l hemi mercedes 5.5l v… more | View on Amazon |
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Champion Iridium 16pc | The champion iridium spark plugs for ram 2500 5.7l 6.4l v8 2011-2019 offers exceptional quality… more | View on Amazon |
Detailed Reviews
These spark plug reviews cover key features such as electrode material, heat range, compatibility with 2011–2024 Ram models, and performance benefits like improved fuel economy and smoother acceleration. Ideal for daily drivers, towing setups, or performance builds, each option balances OEM-grade reliability with aftermarket enhancements to keep your 6.4 HEMI running at its peak.
| Brand | AIP Electronics |
| Material | Iridium |
| Quantity | 16 spark plugs + ignition coils |
| Compatibility | 2008–2019 Ram 5.7L/6.4L V8 |
| Certification | ISO/IATF certified |
The AIP Electronics Dragon FIRE Kit-1565 delivers high-performance iridium spark plugs paired with direct-fit ignition coils, designed specifically for Ram trucks powered by the 5.7L and 6.4L HEMI engines from 2008 through 2019. Featuring up to 15% more energy output than standard plugs, this kit ensures faster cold starts, stronger acceleration, and consistent combustion under load. Built to OE factory specifications and manufactured under strict ISO/IATF standards, these plugs offer reliable spark delivery and enhanced durability.
Watertight connectors and advanced heat-resistant thermoplastics protect against environmental damage, making it ideal for both city driving and heavy-duty applications. Whether you’re upgrading for better fuel economy or restoring performance after wear, this plug-and-play solution minimizes maintenance while maximizing engine responsiveness.
- Includes both spark plugs and ignition coils for full tune-up convenience
- Iridium center electrode enhances longevity and spark consistency
- Plug-and-play installation with no modifications required
- ISO-certified manufacturing ensures reliability and safety
- Improves cold-start performance and throttle response
- Limited to 2008–2019 model years (not compatible with newer Rams)
- Higher upfront cost compared to basic copper plugs
- Requires careful fitment verification via Amazon Garage tool
Ram owners seeking an all-in-one upgrade that combines spark plugs and coils for improved reliability and performance across daily driving and moderate towing scenarios.
| Brand | NGK |
| Material | Iridium |
| Quantity | 16 pieces |
| Compatibility | Ram 2500 5.7L/6.4L V8 (2011–2020) |
| Packaging | Original OEM packaging |
NGK Iridium IX spark plugs are trusted worldwide for their precision engineering and superior ignitability. Designed specifically for Ram 2500 trucks with 5.7L and 6.4L V8 engines between 2011 and 2020, these plugs use a fine-wire iridium tip that maintains a sharp spark throughout thousands of miles. The durable shell protects against vibration and heat, while the optimized electrode design reduces misfires and improves fuel combustion efficiency.
As a direct replacement part backed by NGK’s reputation as the global leader in spark plug technology, this set comes in authentic packaging with hardware included. Users report noticeable improvements in idle smoothness and acceleration consistency, especially during cold weather starts. Ideal for fleet operators or serious DIYers who demand OEM-level quality without the dealership markup.
- World-class brand known for durability and performance
- Iridium tip ensures long life and stable sparking
- Exact fit with no modification needed
- Reduces engine hesitation and misfires
- Includes original hardware and packaging
- Only covers Ram 2500 models (not 1500)
- Does not include ignition coils—must be purchased separately
- Slightly higher price point than budget alternatives
Ram 2500 owners focused on OEM-grade performance, reduced maintenance intervals, and reliable operation in demanding work or recreational environments.
| Brand | Champion |
| Material | Copper |
| Quantity | 16 pieces |
| Compatibility | Ram 2500 5.7L/6.4L V8 (2011–2019) |
| Technology | Traditional copper core |
Champion Copper Plus spark plugs offer dependable performance at a value-driven price. Compatible with Ram 2500 trucks equipped with 5.7L or 6.4L V8 engines from 2011 to 2019, these plugs feature a robust copper core that provides excellent thermal conductivity and heat dissipation. While not as long-lasting as iridium or platinum variants, they deliver strong initial spark energy and are favored by many mechanics for routine maintenance due to their affordability and ease of replacement.
Backed by Champion’s legacy in motorsports and OE manufacturing, this 16-pack includes genuine parts in original packaging. Many users appreciate the immediate improvement in idle stability and throttle response, particularly when replacing worn-out OEM plugs. Though expected to last shorter intervals than premium metals, they remain a smart choice for budget-conscious owners who prioritize reliability over extended service life.
- Lower cost than iridium or platinum options
- Excellent heat transfer and spark initiation
- Direct fit with no adapters required
- Genuine Champion quality with racing heritage
- Ideal for regular maintenance schedules
- Shorter lifespan compared to iridium/platinum
- Not recommended for high-performance mods
- Copper wears faster under heavy loads
- Excludes newer model years beyond 2019
Daily-driven Ram 2500 owners looking for a cost-effective, dependable spark plug that performs well under normal operating conditions without breaking the bank.
| Brand | NGK |
| Material | Iridium |
| Quantity | 16 pieces |
| Compatibility | Ram 1500 5.7L V8 (2011–2024) |
| Warranty | Limited lifetime warranty |
This NGK Iridium IX set is engineered for broader compatibility across Chrysler Group vehicles, including Ram 1500 models with 5.7L V8 engines from 2011 to 2024. Its fine-wire iridium construction delivers precise spark control, minimizing misfires and optimizing combustion efficiency. The durable ceramic insulator resists cracking under extreme heat, while the nickel-alloy ground electrode ensures consistent performance over tens of thousands of miles.
Users frequently highlight the plug’s ability to maintain smooth idling and responsive acceleration, even in older 6.4L HEMI platforms. As an OE supplier to multiple automakers, NGK backs this product with a limited lifetime warranty, offering peace of mind for long-term ownership. Perfect for those wanting a premium plug without paying dealership prices.
- Broad vehicle compatibility within Chrysler lineup
- Lifetime warranty adds value and security
- Superior spark focus reduces misfire risk
- Longer service interval than copper plugs
- Trusted OE supplier quality
- Does not cover 6.4L engine explicitly (only 5.7L listed)
- No ignition coils included
- Price reflects premium positioning
Ram 1500 owners seeking a high-quality, warranty-backed spark plug that supports reliable daily operation and moderate performance demands.
| Brand | NGK |
| Material | Iridium |
| Quantity | 16 pieces |
| Compatibility | Ram 1500 5.7L HEMI V8 (2011–2024) |
| Technology | Fine-wire iridium tip |
Optimized for Ram 1500 trucks with 5.7L HEMI engines, this NGK Iridium IX set spans model years 2011 through 2024, offering future-proof compatibility for newer builds. The fine-wire iridium center electrode creates a concentrated spark stream, improving ignitability and reducing the chance of misfires—especially beneficial under heavy load or high RPM conditions. The robust shell design withstands engine vibrations and thermal stress, ensuring longevity even in demanding use cases.
Many owners report quieter operation, better fuel economy, and crisper throttle response after installation. NGK’s attention to electrode geometry and gap tolerances means consistent performance across all cylinders. This makes it a favorite among enthusiasts who prioritize drivability and reliability without extensive modifications.
- Extended coverage through 2024 model year
- Fine-wire design maximizes spark efficiency
- Reduces emissions and improves combustion
- Compatible with stock and mildly modified engines
- Proven track record in harsh conditions
- Exclusively for 5.7L engines (not 6.4L)
- No ignition coils included
- Premium pricing may deter budget shoppers
Ram 1500 drivers who want a high-performance, long-life spark plug that enhances everyday drivability and supports reliable operation across diverse driving conditions.
| Brand | TRQ |
| Material | Iridium |
| Quantity | 16 spark plugs |
| Compatibility | 5.7L HEMI V8 (Ram/Dodge/Jeep), 5.5L V8 (Mercedes) |
| Features | Pre-assembled kit with reference numbers |
The TRQ Iridium Spark Plug & Tune-Up Kit stands out by including 16 high-performance iridium plugs with a comprehensive list of OEM reference numbers, making cross-referencing effortless. Designed for compatibility with Chrysler Group 5.7L HEMI engines as well as select Mercedes-Benz 5.5L V8s, this kit simplifies the replacement process for multi-brand vehicle owners. Each plug is pre-gapped and built to direct-fit specifications, eliminating guesswork during installation.
Beyond the plugs themselves, TRQ emphasizes user support with hundreds of DIY installation videos available online—helpful for first-time changers. While not as widely recognized as NGK or Champion, TRQ has built a solid reputation for delivering value-focused, reliable components. Owners appreciate the clear reference numbering and the fact that no additional tools or parts are needed beyond basic hand tools.
- Includes multiple OEM cross-reference numbers
- Supports both Ram HEMI and Mercedes engines
- DIY-friendly with video guides available
- Pre-assembled for quick, error-free install
- Good balance of price and performance
- Brand recognition lower than NGK/Champion
- No ignition coils included
- Fitment must be verified manually
- Limited warranty coverage
DIYers and fleet managers needing a versatile, well-documented spark plug kit that works across multiple vehicle platforms without sacrificing quality.
| Brand | Champion |
 Sagor Jahan is the founder and author of Automopromo.com, dedicated to delivering insightful tips, reviews, and updates in the automotive and promotional industry. With a passion for innovation and clear guidance, Sagor helps readers make informed decisions and stay ahead in the ever-evolving automotive world. |
