Dodge Charger Spark Plug Replacement Guide (2004-2011)
Keep your Charger's engine firing on all cylinders with the right set of new aftermarket spark plugs.
- HEMI V8 engines (5.7L, 6.1L) require 16 spark plugs, while V6 engines (2.7L, 3.5L) require 6.
- NGK and Champion are OEM-equivalent choices; their iridium plugs offer the best combination of performance and longevity.
- Symptoms of failure include rough idle, poor gas mileage, hesitation, and a check engine light for misfires (P0300 series).
- While most premium plugs are pre-gapped, always double-check the gap before installation to ensure it matches your engine's specification.
Signs of Failing Spark Plugs
When your Charger's spark plugs start to wear out, you'll notice. The signs can be subtle at first but will worsen over time. Look out for a rough idle, where the engine shakes or sputters when you're stopped. You might also experience trouble starting the car, reduced acceleration, and worse gas mileage. A check engine light is a common indicator, often with codes pointing to an engine misfire (P0300-P0308).
🎬 Watch how to fix engine misfires by replacing plugs and coils.The HEMI "Tick"
Many Charger R/T and SRT8 owners report a ticking noise from the engine. While this can sometimes be a serious internal engine issue like a lifter problem, it can also be caused by something as simple as an exhaust manifold leak from a broken bolt. Don't immediately assume the worst; a ticking noise can sometimes be related to ignition or exhaust components before suspecting major engine trouble.
Choosing the Right Aftermarket Spark Plugs
The 2004-2011 Dodge Charger came with several engine options, from the 2.7L and 3.5L V6 engines to the powerful 5.7L and 6.1L HEMI V8s. The right spark plug depends on your engine and your needs. A key detail for HEMI owners is that these engines require 16 spark plugs—two for each cylinder. V6 models only require six.
Brand Tiers for Your Charger
- OEM-Equivalent/Premium (NGK, Champion, Denso): Mopar, the OEM parts brand for Dodge, often uses NGK or Champion plugs from the factory. Sticking with these brands, especially their iridium or platinum options, is a safe bet for factory-level performance and longevity. NGK Iridium IX plugs are a highly recommended option by owners for their durability and performance. Denso is another high-quality Japanese brand that provides excellent performance.
- Performance (MSD, Brisk): For owners with modified engines or those seeking every bit of performance, brands like MSD and Brisk offer plugs designed for high-performance applications. These are often more expensive and may not be necessary for a daily driven, stock vehicle.
- Value/Standard (Autolite, Bosch, ACDelco): These brands offer reliable and affordable options. Autolite's copper plugs are a good budget choice but will have a shorter lifespan compared to platinum or iridium plugs. Bosch and ACDelco also provide quality standard replacement plugs that meet or exceed OEM specifications.
| Category | V6 Engines (6 Plugs) | HEMI V8 Engines (16 Plugs) |
|---|---|---|
| Aftermarket Parts Cost | $24 - $240 | $64 - $630 |
| Shop Labor Cost | $150 - $300 | $250 - $500+ |
| OEM Parts Cost (Mopar) | $60 - $180 | $160 - $400+ |
Pro Tip: The service interval for spark plugs can vary. Standard copper plugs may need changing every 30,000 miles, while long-life iridium or platinum plugs can last up to 100,000 miles. Always check the recommendation for the specific plug you purchase.
Frequently Asked Questions (FAQ)
How many spark plugs does my Dodge Charger need?
If you have a V6 engine (2.7L or 3.5L), you need six spark plugs. If you have a V8 HEMI engine (5.7L or 6.1L), you need sixteen spark plugs (two per cylinder).
Should I use Iridium, Platinum, or Copper plugs?
Iridium and platinum plugs offer the longest life, often up to 100,000 miles, and provide consistent performance. They are the recommended choice for modern engines. Copper plugs are cheaper but have a much shorter service life, typically around 30,000 miles. For the labor involved, especially on the HEMI, choosing a long-life plug is often more cost-effective.
Do I need to gap my new spark plugs?
Most premium spark plugs from brands like NGK and Denso come pre-gapped. However, it's always a good idea to verify the gap with a feeler gauge or gapping tool before installation, as they can be knocked out of spec during shipping. The correct gap for your Charger is critical for performance and is usually between 0.040" and 0.051", depending on the specific engine and plug.
🎬 Learn more about proper spark plug gapping and torque specifications.Are there any recalls for my Charger's spark plugs?
There are no specific recalls for spark plugs on the 2004-2011 Dodge Charger models. However, a Technical Service Bulletin (TSB) for newer models notes that engine misfires can be caused by cracks in the spark plug insulator that occur during installation, highlighting the need for careful handling and proper torque.
Helpful Videos
Technical Specifications
OEM Part Numbers: SPRE14MCC4 68303913AA 56028374AB
Engine Type: 2.7L V6, 3.5L V6, 5.7L HEMI V8, 6.1L HEMI V8. Number of Plugs: 6 for V6, 16 for V8. Common Materials: Copper, Platinum, Iridium. Recommended Torque: ~13 ft-lbs.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Dodge Charger: