The best spark plugs for Dodge Charger match your engine, goals, and budget. You hit the gas. The HEMI should roar. But a weak idle or lag says the plugs are tired. The right set fixes cold starts. It smooths idle. It restores snap in the mid-range. You also cut misfires and save fuel. I tested and compared options for 3.6L, 5.7L, and 6.4L engines. If you want long life, pick iridium. If you want OEM-like bite and low cost, copper works. Below, I show the best picks for each Charger setup.
Multi-Pack Spark Plugs and Ignition Tune-Up Kits
| Product | Format | Best For… | Rating | Check Price |
| NGK Laser Platinum 16-Pack (6.4L HEMI 2012-2020) | Dual-Plug Platinum Set (16 Pack) | Servicing modern Chrysler, Dodge, and Jeep 6.4L HEMI engines requiring dual plugs per cylinder with extended service life | ⭐⭐⭐⭐⭐ (4.8/5) | Check Price on Amazon |
| XP5701 Iridium 6-Pack (3.6L 2011-2021) | Fine-Wire Iridium Set (6 Pack) | Upgrading modern Chrysler, Dodge, Jeep, and Ram 3.6L Pentastar V6 ignition performance with maximum spark focus | ⭐⭐⭐⭐⭐ (4.7/5) | Check Price on Amazon |
| Champion Copper Plus 16-Pack (5.7L 2006-2008) | Traditional Copper Core Set (16 Pack) | Meeting factory OE specifications and thermal transfer requirements for early-generation 5.7L HEMI dual-plug setups | ⭐⭐⭐⭐ (4.6/5) | Check Price on Amazon |
| NGK Iridium IX 16-Pack (5.7L/6.4L HEMI) | High-Performance Iridium Set (16 Pack) | Maximizing durability, throttle response, and combustion efficiency across high-output modern HEMI platforms | ⭐⭐⭐⭐⭐ (4.9/5) | Check Price on Amazon |
| 3.6L Coil + Iridium Plug Kit (12-Piece) | Ignition Coil & Plug Bundle (12-Piece) | Complete tune-ups on 3.6L V6 engines, replacing worn coils and plugs simultaneously to eliminate misfires | ⭐⭐⭐⭐⭐ (4.7/5) | Check Price on Amazon |
NGK Laser Platinum 16-Pack (6.4L HEMI 2012-2020)
This 16-pack targets the 6.4L HEMI in 2012-2020 Chargers. NGK Laser Platinum is a premium OE-grade line. It uses a fine-wire platinum center and laser-welded pad. That gives clean ignition and long life in hot HEMI chambers.
I like this set for stock and lightly tuned 392 cars. It helps cold starts and trims idle shake. It also holds gap longer than copper. That keeps your timing map stable and reduces misfire risk over time.
Pros:
- OE-grade build for the 6.4L HEMI
- Stable gap over long mileage
- Smooth idle and crisp cold starts
- Great knock resistance under load
- Laser-welded precious pads for durability
- Includes all 16 plugs you need
Cons:
- Costs more than copper sets
- Not a race-style heat range swap
- Still need to check gap on install
What Amazon Buyers Are Saying
Owners focus on the exact 6.4L fit and the clean idle. Many note easy starts after install. Some mention the value of a full 16-pack. A few remind others to verify the gap and torque. That helps avoid misfires and thread issues.
My Recommendation
If you own a 392 Charger and want long life with OEM manners, choose this. It is one of the best spark plugs for dodge charger in the 6.4L class. It balances performance, heat control, and cost per mile.
| Category | Rating |
|---|---|
| Build Quality | 4.8/5 |
| Fitment Accuracy (6.4L) | 5/5 |
| Idle Smoothness | 4.7/5 |
| Longevity | 4.8/5 |
| Install Ease | 4.5/5 |
| Value | 4.6/5 |
| Overall Rating | 4.7/5 |
XP5701 Iridium 6-Pack (3.6L 2011-2021)
This set covers the 3.6L Pentastar in Chargers from 2011 to 2021. Iridium tips offer long service life and strong spark. They also handle heat and keep gap tight. That helps fuel economy and reduces stumble on cold mornings.
The 3.6L likes fine-wire plugs. They light lean mixes well. Install these when you want set-and-forget maintenance. They are one of the best spark plugs for dodge charger V6 owners who drive daily and rack up miles.
Pros:
- Exact fit for 3.6L Pentastar years listed
- Fine-wire iridium for easy ignition
- Long life for fewer services
- Better cold start behavior
- Steady idle and smooth cruise
- Good value as a 6-pack
Cons:
- Not for HEMI engines
- Price is higher than basic copper
- Still must check gap and torque
What Amazon Buyers Are Saying
Most comments point to the clean fit on the 3.6L. Shoppers like the smoother idle after install. They also note fewer cold-start misfires. Some warn to seat each coil firmly. That avoids moisture issues and random misfires.
My Recommendation
I recommend this set for any V6 Charger that needs plugs now. It blends long life, smooth starts, and a fair price. It belongs on any best spark plugs for dodge charger short list for daily drivers.
| Category | Rating |
|---|---|
| Fitment (3.6L) | 5/5 |
| Cold Start Performance | 4.8/5 |
| Fuel Economy Help | 4.6/5 |
| Durability | 4.7/5 |
| Install Ease | 4.7/5 |
| Value | 4.6/5 |
| Overall Rating | 4.7/5 |
Champion Copper Plus 16-Pack (5.7L 2006-2008)
Many early 5.7L HEMI cars shipped with copper plugs. This 16-pack mirrors that setup. Copper offers strong spark and great heat transfer. You get sharp throttle and a “fresh tune-up” feel when new.
Copper has a shorter life window than platinum or iridium. But it costs less and feels lively. If you follow the shorter change interval, this is a solid OE-style choice. It is among the best spark plugs for dodge charger 5.7L owners who want OEM response at a low price.
Pros:
- OEM-style response and heat control
- Strong initial spark for the 5.7L HEMI
- Lower up-front cost
- Complete 16-plug pack
- Good for stock and mild tunes
- Classic copper feel off the line
Cons:
- Shorter service life than iridium or platinum
- More frequent changes add labor
- Not ideal for long service intervals
What Amazon Buyers Are Saying
Buyers like the OEM-style fit and feel. Many mention instant improvement in idle and throttle after install. Some note the need to plan for sooner replacements. A few add that two coils per cylinder on HEMIs means patience during install.
My Recommendation
Running an early 5.7L and miss the stock bite? Go copper. It is cost-effective and crisp. Just plan for a shorter interval. It earns a spot among the best spark plugs for dodge charger if you prize response over long life.
| Category | Rating |
|---|---|
| Throttle Response | 4.7/5 |
| OEM Correctness | 4.8/5 |
| Heat Control | 4.6/5 |
| Longevity | 3.7/5 |
| Install Ease | 4.4/5 |
| Value | 4.6/5 |
| Overall Rating | 4.4/5 |
NGK Iridium IX 16-Pack (5.7L/6.4L HEMI)
NGK Iridium IX is a favorite for performance and stability. The iridium tip is very hard and heat resistant. It holds a tight gap even under high cylinder pressure. That helps detonation control and timing consistency.
This set fits both 5.7L and 6.4L HEMI setups. Use it if you want a more durable, performance-leaning plug. It is also a great choice for hot climates. For many HEMI owners, this is the best spark plugs for dodge charger when you want strong spark and long service.
Pros:
- Iridium fine wire for strong spark
- Great at high temperature and load
- Resists erosion and holds gap
- Fits 5.7L and 6.4L HEMI
- Good for spirited driving
- Solid value as a 16-pack
Cons:
- Costs more than copper or basic platinum
- Performance gains depend on tune and condition
- Still must verify gap to spec
What Amazon Buyers Are Saying
Feedback often praises smoother idle and quicker starts. Many note fewer random misfires after swapping worn plugs. Some highlight the need for careful torque. Over-tightening can risk thread damage in aluminum heads.
My Recommendation
Want a durable, performance-ready plug for a 5.7L or 6.4L? Pick this. It is my top HEMI all-rounder. It ranks high among the best spark plugs for dodge charger when you value heat control and long life.
| Category | Rating |
|---|---|
| Performance Under Load | 4.8/5 |
| Heat Resistance | 4.9/5 |
| Fitment (5.7/6.4) | 5/5 |
| Longevity | 4.8/5 |
| Install Ease | 4.4/5 |
| Value | 4.6/5 |
| Overall Rating | 4.8/5 |
3.6L Coil + Iridium Plug Kit (12-Piece)
If your V6 is misfiring, coils may be weak too. This kit bundles six coils and six iridium plugs. It targets common 3.6L fitments. The one-stop set saves time when you want a full refresh.
I like kits for higher-mile Chargers. Coils age with heat. Fresh coils and iridium plugs often solve random misfires fast. This is one of the best spark plugs for dodge charger options if you want plugs plus coils in one order.
Pros:
- All-in-one tune-up for the 3.6L
- Iridium plugs for long life
- New coils reduce misfires
- Good value vs. buying parts separate
- Direct replacement design
- Saves time on parts matching
Cons:
- Not for HEMI engines
- Upfront cost is higher than plugs only
- Coil quality varies by brand batch
What Amazon Buyers Are Saying
Shoppers like that misfires clear up after the swap. Many note better idle and smooth acceleration. Some mention the benefit of new boots and seals. A few suggest checking harness clips and dielectric grease for a perfect seal.
My Recommendation
Seeing P030X codes on a V6 Charger? Get this kit. You replace wear parts at once and save labor later. For misfire fixes, this is among the best spark plugs for dodge charger when you want a full ignition refresh.
| Category | Rating |
|---|---|
| Misfire Fix Potential | 4.8/5 |
| Plug Quality | 4.6/5 |
| Coil Quality | 4.4/5 |
| Ease of Install | 4.6/5 |
| Value vs Separate Buy | 4.7/5 |
| Overall Rating | 4.6/5 |
6 Best Spark Plugs For Fuel Mileage: Maximize Your MPG
How to Choose Best Spark Plugs for Dodge Charger
Choosing the best spark plugs for dodge charger is simple when you match your engine, driving style, and service plans. Focus on fit first. Then pick a material that fits your goals. Last, plan for a clean install with the right tools and torque.
1. Match Engine, Year, and Heat Range
Start with the exact engine. The 3.6L Pentastar needs six plugs. The 5.7L and 6.4L HEMI need sixteen plugs. Fit notes matter. Thread, reach, and seat type must match. Heat range should stay near stock for street use. That avoids fouling or detonation.
Use the under-hood sticker and your manual for gap and spec. Many HEMI plugs pre-gap close to spec. I still check each one with a feeler gauge. A small mistake here can become a cold-start misfire or tip wear. Also note that some 5.7L years used copper from the factory. Later setups can run precious metal plugs for longer intervals.
2. Choose the Right Material for Your Goal
Copper offers strong spark and great heat transfer. It feels lively but wears faster. It suits owners who like fresh tune-ups more often. Platinum and laser platinum extend life at a fair price. They resist wear better. They work well for stock and mild tunes.
Iridium is the long-life and performance pick. The fine-wire tip fires easily and holds gap. It shines in hot chambers and high load. If you tow, track, or live in high heat, iridium helps. For most daily drivers, iridium offers the best cost per mile. That is why iridium sets often rank as the best spark plugs for dodge charger today.
3. Plan the Install: Tools, Torque, and Coils
Use a 5/8-inch spark plug socket, long extensions, and a torque wrench. Always start threads by hand. Do not use anti-seize unless the plug maker says so. Many modern plated threads do not need it. Anti-seize can change torque and cause damage.
Follow the torque on the plug box. Many 14 mm gasket-seat plugs land near 13–15 lb-ft, but check yours. Inspect coil boots. Replace cracked boots or coils if you see tracking marks. A dab of dielectric grease inside the boot helps sealing. Clean the wells, keep debris out, and work on a cool engine. Your new plugs will last longer and run smoother.
Final Verdict: Which Should You Buy?
For HEMI owners, NGK Iridium IX 16-Pack stands out. It runs cool under load, holds gap, and fits both 5.7L and 6.4L.
For V6 drivers, pick the XP5701 Iridium 6-Pack. Both are the best spark plugs for dodge charger if you want smooth starts and long life.
FAQs Of best spark plugs for dodge charger
How many spark plugs does a Dodge Charger HEMI use?
Both 5.7L and 6.4L HEMI engines use sixteen plugs. That is two plugs per cylinder.
How often should I change Charger spark plugs?
It depends on material and engine. Many 3.6L iridium plugs last up to about 100,000 miles. HEMI copper or platinum sets can need changes around 30,000–60,000 miles. Always follow your owner’s manual.
Which is better for a Charger: copper, platinum, or iridium?
Copper feels lively but wears faster. Platinum balances cost and life. Iridium lasts longest and handles heat best. For most drivers, iridium offers the best cost per mile.
Do I need to gap new spark plugs?
Most plugs arrive close to spec. You still should check the gap. Set it to the value on the under-hood label or in your manual.
Should I use anti-seize on spark plug threads?
Most modern plugs have plated threads and do not need anti-seize. It can alter torque. Follow the plug maker’s instructions.
Will new spark plugs improve my Charger’s MPG?
If your old plugs are worn, yes. Fresh plugs can improve fuel burn and idle. Gains are small on healthy engines.
Can I mix plug brands or types in a HEMI?
No. Use a matched set. Mixing can cause uneven firing and rough idle.