If your Dodge Magnum has developed harder starts, rough idle, misfires, or an unknown maintenance history, checking the spark plugs is a sensible place to start. The correct spark plugs depend first on your engine, model year, plug count, and factory gap specification.
In this guide you’ll find spark plug options for the 2005-2008 Dodge Magnum 5.7L HEMI V8, 3.5L V6, and 2.7L V6. The 5.7L HEMI uses two plugs per cylinder, so a complete service requires 16 plugs. The V6 engines use six plugs. Always confirm your exact engine, model year, plug type, and gap with your owner’s manual, service information, or a VIN-based parts lookup before ordering.
This roundup is reader-supported. When you click through Amazon links, we may earn a referral commission on qualifying purchases at no extra cost to you.
Quick Verdict
Best overall for most 5.7L V8 owners: the 16 pc NGK V-Power set gives you a complete twin-spark service kit with listed 2005-2008 Magnum 5.7L fitment and a 0.044-inch gap specification.
Best value for the 5.7L V8: the 16 pc Champion Copper Plus set is a straightforward OE-style option using the listed RE14MCC4 plug type.
Best platinum 5.7L option: the 16 pc Champion Platinum set uses the listed RE14PMC plug type and gives owners another full 16-plug choice.
Best for the 3.5L V6: the 6 pc Champion Platinum set is listed for the 2005-2008 3.5L Magnum with RC12PEC5 plugs and a 0.050-inch gap.
Best dedicated 2.7L V6 option: the 6 pc NGK V-Power set matches the six-plug V6 layout, with a listed 0.052-inch gap for 2005 and 0.050 inch for 2006-2008.
Top Picks
|
Category |
Product |
Engine Fit |
Check |
|---|---|---|---|
|
🏆 Best Overall |
2005-2008 5.7L V8 |
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|
💰 Best Value |
2005-2008 5.7L V8 |
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⚡ Best Platinum 5.7L Option |
2005-2008 5.7L V8 |
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🎯 Best for 3.5L V6 |
2005-2008 3.5L V6 |
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💡 Best for 2.7L V6 |
2005-2008 2.7L V6 |
How We Picked These Spark Plugs
You want spark plugs that match your exact engine and make sense for the way you maintain your Magnum. We prioritized engine and model-year fitment, correct plug quantity, listed plug type and gap, electrode material, and whether the package gives you enough plugs for a complete service. These are selection criteria, not claims of hands-on testing.
Before ordering, confirm your engine displacement, compare the listed plug type and gap with your owner’s manual or VIN-based parts lookup, and check the current Amazon product details. If your Magnum is an SRT8 with the 6.1L engine, do not assume any of the 2.7L, 3.5L, or 5.7L picks below are correct for it.
Before You Buy: Fitment Checklist
- Confirm whether your Dodge Magnum has the 2.7L V6, 3.5L V6, 5.7L V8, or 6.1L SRT8 engine.
- For the 5.7L HEMI V8, plan for a complete 16-plug service because it uses two plugs per cylinder.
- For the 2.7L and 3.5L V6 engines, a complete spark-plug service uses six plugs.
- Confirm the factory gap for your exact model year instead of assuming every year uses an identical specification.
- Use a proper spark plug socket, suitable extensions, a gap gauge, and a torque wrench.
- Let the engine cool before removal and follow the service manual’s torque procedure to avoid thread damage.
NGK V-Power Spark Plugs (16 pc)
If you drive a Magnum with the 5.7L HEMI V8, this 16-pack is the strongest all-around fit in the roundup. It is packaged around the twin-spark layout, so you can replace all 16 plugs during one complete service instead of mixing old and new plugs.
The listed 0.044-inch gap and OE-equivalent positioning make this a straightforward choice for a stock daily driver when those specifications match your vehicle information. If the car has rough idle, difficult starting, or an uncertain maintenance history, worn plugs are one ignition component worth inspecting before assuming a more expensive part has failed.
Choose this set if you want a complete NGK-branded 5.7L service pack and your model-year fitment checks agree with the listing.
When It Helps
|
Situation |
Why This Set Makes Sense |
|---|---|
|
Routine 5.7L Maintenance |
The 16-pack covers the full twin-spark plug count in one purchase. |
|
Unknown Service History |
A complete set lets you service every plug together once replacement is confirmed as due. |
|
DIY Tune-Up |
You do not need to combine several smaller packages to reach the required 16 plugs. |
|
Stock Daily Driver |
The V-Power design is positioned as an OE-style replacement rather than a specialty racing plug. |
Versatility
This set is best suited to stock or lightly modified 2005-2008 Magnums with the 5.7L V8 when the listing, plug specification, and vehicle information all agree.
Who Should Buy This
Buy this if you have a compatible 5.7L V8 Magnum and want a complete 16-plug NGK V-Power set for routine ignition maintenance.
Who Should Avoid This
Avoid it if your Magnum has a V6 or 6.1L SRT8 engine, or if your engine setup calls for a different heat range, plug material, part number, or gap.
Key Benefits
- Complete 16-plug pack for the 5.7L HEMI twin-spark layout when fitment is confirmed
- Listed for 2005-2008 Dodge Magnum 5.7L V8 applications
- Listed 0.044-inch gap provides a clear specification to verify before installation
- V-Power replacement design suits routine maintenance on compatible stock engines
- One package simplifies a complete plug service
Check Product Details on Amazon
Champion Copper Plus Spark Plugs (16 pc)
If you have a 2005-2008 Dodge Magnum 5.7L V8 and want a straightforward OE-style service option, this Champion Copper Plus 16-pack is the value-focused choice. Its main advantage is simple: the package contains the full quantity needed for the HEMI’s two-plug-per-cylinder layout.
The listed RE14MCC4 plug type and 0.044-inch gap give you useful details to compare with your service information before purchase. Copper-style plugs can make sense for owners who prioritize an OE-style maintenance approach and are comfortable following the applicable replacement schedule.
This is the set to compare with the NGK V-Power option when fitment is the same but you prefer Champion Copper Plus.
When It Helps
|
Situation |
Why This Set Makes Sense |
|---|---|
|
Routine Maintenance |
The set provides all 16 plugs required for a complete compatible 5.7L service. |
|
OE-Style Replacement |
The listing identifies RE14MCC4 and a 0.044-inch gap for the compatible Magnum application. |
|
DIY Tune-Up |
Buying a complete 16-pack reduces the chance of accidentally ordering only half the required plug count. |
|
Value-Focused Service |
Copper Plus is a practical alternative when you do not specifically need a platinum-style option. |
Versatility
These plugs are mainly a routine-maintenance choice for compatible stock 5.7L Magnums rather than a specialty option for heavily modified engines.
Who Should Buy This
Buy this set if your 2005-2008 Dodge Magnum has the compatible 5.7L V8 and your service information agrees with the listed RE14MCC4 plug specification.
Who Should Avoid This
Skip it if your Magnum has the 2.7L V6, 3.5L V6, or 6.1L SRT8 engine, or if your vehicle information specifies another part number or plug design.
Key Benefits
- Full 16-pack covers the 5.7L V8 twin-spark plug count when fitment is confirmed
- Listed RE14MCC4 plug type helps with pre-purchase verification
- Listed 0.044-inch gap for the compatible 5.7L Magnum application
- Copper Plus design suits value-focused routine maintenance
Check Product Details on Amazon
Champion Platinum Spark Plugs (16 pc)
If you own a Magnum with the 5.7L V8 and prefer a platinum-style spark plug, this 16-piece Champion set gives you another complete twin-spark service option. The listed RE14PMC specification and 0.044-inch gap make it easy to compare directly with your vehicle information before ordering.
The reason to choose it over the Copper Plus set is plug construction, not a guaranteed horsepower increase. Platinum-style plugs are generally positioned around wear resistance and service life, but your vehicle’s required plug specification and maintenance schedule should still control the decision.
Compare this set against the NGK V-Power and Champion Copper Plus options if all three are confirmed for your exact 5.7L application.
When It Helps
|
Situation |
Why This Set Makes Sense |
|---|---|
|
Complete 5.7L Service |
The 16-pack covers the entire twin-spark layout when fitment is confirmed. |
|
Platinum Preference |
It gives you a Champion platinum-style alternative to the copper-focused sets. |
|
Fitment Verification |
The RE14PMC designation and listed 0.044-inch gap provide concrete details to check against service data. |
|
One-Order Tune-Up |
All 16 plugs come in one package instead of requiring multiple smaller packs. |
Versatility
This set is best for compatible stock or lightly modified Dodge Magnum 5.7L V8 applications where the RE14PMC specification matches the vehicle requirements.
Who Should Buy This
Buy it if you have a compatible 5.7L Magnum, need all 16 plugs, and prefer Champion’s platinum-style option.
Who Should Avoid This
Avoid it if you need a V6 plug set, have a 6.1L SRT8, or your service information specifies a different plug type, heat range, or gap.
Key Benefits
- Complete 16-piece quantity for the 5.7L twin-spark layout when fitment is confirmed
- Listed RE14PMC plug type
- Listed 0.044-inch gap for the compatible Magnum application
- Platinum-style construction for buyers who prefer that plug design
- Simple alternative to buying 16 plugs individually
Check Product Details on Amazon
Champion Platinum Spark Plugs (6 pc)
If your Dodge Magnum has the 3.5L V6, this six-piece Champion Platinum set is the most direct engine-specific choice in the roundup. It provides the correct six-plug quantity and is listed with the RC12PEC5 plug type and a 0.050-inch gap for the compatible application.
That engine-specific packaging reduces confusion compared with looking at one of the 16-piece HEMI kits. Platinum construction also gives buyers an alternative to basic copper-style plugs, but correct fitment matters more than electrode material alone.
When It Helps
|
Situation |
Why This Set Makes Sense |
|---|---|
|
3.5L V6 Tune-Up |
The six-pack matches the V6 plug count for a complete service. |
|
Fitment Comparison |
RC12PEC5 and the listed 0.050-inch gap give you concrete specifications to check. |
|
Routine Daily Driving |
Correctly matched replacement plugs can restore normal ignition operation when the existing plugs are worn or fouled. |
|
DIY Service |
The engine-specific six-pack avoids buying unnecessary extra plugs. |
Versatility
This set is intended for compatible 2005-2008 Dodge Magnum 3.5L V6 applications. It is not a universal Magnum spark-plug set.
Who Should Buy This
Buy it if your Magnum has the 3.5L V6 and your vehicle information confirms the RC12PEC5 specification and listed gap.
Who Should Avoid This
Avoid it if you have the 5.7L V8, 2.7L V6, or 6.1L SRT8, because those engines use different plug requirements.
Key Benefits
- Six-plug quantity suits a complete 3.5L V6 service
- Listed for 2005-2008 Dodge Magnum 3.5L V6 applications
- RC12PEC5 plug type gives buyers a useful fitment reference
- Listed 0.050-inch gap can be checked against vehicle service information
- Platinum-style construction provides an alternative to copper-focused plugs
Check Product Details on Amazon
NGK V-Power Spark Plugs (6 pc)
If you drive a Magnum with the 2.7L V6, this six-piece NGK V-Power set gives you a dedicated engine-specific option instead of forcing you to sort through 16-plug HEMI packages.
The important detail is model year. The listed gap is 0.052 inches for the 2005 Magnum 2.7L and 0.050 inches for 2006-2008 applications. That is why you should confirm your exact year rather than treating every 2.7L Magnum as identical.
Choose this set when you have confirmed the 2.7L V6, need all six plugs, and the listed specification agrees with your service information.
When It Helps
|
Situation |
Why This Set Makes Sense |
|---|---|
|
2.7L V6 Tune-Up |
The six-pack supplies the quantity required for a complete V6 spark-plug service. |
|
Model-Year Verification |
The year-specific gap information helps prevent treating the 2005 and 2006-2008 applications as identical. |
|
Routine Maintenance |
Fresh, correctly specified plugs can address ignition problems caused specifically by worn or fouled plugs. |
|
DIY Service |
The engine-specific six-pack makes the required plug quantity easy to understand. |
Versatility
This set is intended for compatible stock or lightly modified Dodge Magnum 2.7L V6 applications. It should not be substituted for the 3.5L V6, 5.7L V8, or 6.1L SRT8 plug requirements.
Who Should Buy This
Buy it if you specifically have a 2005-2008 2.7L V6 Magnum and your model-year service information agrees with the listed plug specification.
Who Should Avoid This
Avoid it if you cannot confirm your engine or model year, or if your service manual or VIN-based parts lookup specifies a different plug or gap.
Key Benefits
- Six-plug package matches the 2.7L V6 plug count
- Listed specifically for 2005-2008 Dodge Magnum 2.7L V6 applications
- Year-specific gap information improves fitment checking
- 0.052-inch listed gap for 2005 and 0.050-inch listed gap for 2006-2008
- Dedicated V6 option avoids confusion with the 16-plug HEMI kits
Check Product Details on Amazon
FAQ
Which Spark Plugs Should You Choose For Your Dodge Magnum?
Choose by engine first. The 5.7L HEMI V8 uses 16 plugs because it has two plugs per cylinder. The 3.5L V6 and 2.7L V6 use six plugs. After identifying the engine, confirm the listed plug type and model-year gap before comparing brand or electrode material. Correct fitment matters more than choosing copper or platinum based on marketing alone.
Use your owner’s manual, service information, VIN-based parts lookup, and the current product listing to confirm the final part number before ordering.
What Spark Plug Gap Does A Dodge Magnum Use?
It depends on the engine and model year. The 5.7L V8 products in this roundup are listed at 0.044 inches. The Champion RC12PEC5 3.5L V6 option is listed at 0.050 inches. For the NGK V-Power 2.7L V6 option, the listing specifies 0.052 inches for 2005 and 0.050 inches for 2006-2008. Always verify the specification for your exact vehicle before installation.
How Often Should You Replace Spark Plugs And What Signs Should You Watch For?
Follow your Dodge service information and the spark plug manufacturer’s guidance rather than relying on one universal interval. Replacement needs vary with plug design, engine condition, driving conditions, and the maintenance schedule for your particular vehicle.
Possible signs of worn or fouled plugs include misfires, rough idle, harder starting, reduced fuel economy, and a check-engine light. These symptoms can also come from coils, wiring, fuel delivery, sensors, compression problems, or other faults, so inspect and diagnose instead of assuming the plugs are always responsible.
Can You Install These Spark Plugs Yourself?
Many experienced DIY owners can replace spark plugs with the correct tools and service information. Typical tools include the proper spark plug socket, extensions, a torque wrench, and a gap gauge. Let the engine cool before working and keep track of coils, boots, or wires as they are removed.
Follow the factory torque procedure. Over-tightening can damage cylinder-head threads, while under-tightening can cause sealing or heat-transfer problems. Do not automatically apply anti-seize; follow the spark plug manufacturer’s and vehicle manufacturer’s guidance for the specific plug.
Should You Replace All 16 Spark Plugs On A 5.7L HEMI At Once?
For a normal complete plug service, replacing the full 16-plug set keeps the service consistent across the engine. The 5.7L HEMI uses two plugs per cylinder, so an eight-plug package would not complete the entire job.
Are These Spark Plugs For The Dodge Magnum SRT8 6.1L?
No product in this roundup is presented as a dedicated 6.1L SRT8 recommendation. If you own a Magnum SRT8, use your service information, VIN-based parts lookup, or a trusted parts professional to confirm the correct plug part number, quantity, heat range, and gap.
Should You Choose Copper Or Platinum Spark Plugs?
Choose the plug type specified for your engine first. Copper-style plugs can be practical for routine OE-style maintenance, while platinum-style plugs may offer greater wear resistance in compatible applications. A more expensive electrode material does not automatically produce more horsepower or make an incompatible plug suitable for your engine.
Which Option Fits Your Engine?
If you have the 5.7L HEMI V8, start with the 16-piece options and compare the NGK V-Power, Champion Copper Plus, and Champion Platinum specifications against your service information. If you have the 3.5L V6, the Champion Platinum six-pack is the engine-specific pick in this roundup. For the 2.7L V6, the NGK V-Power six-pack is the dedicated option, with model-year-specific gap information that deserves extra attention.
Wrapping Up
The best Dodge Magnum spark plug choice starts with identifying the engine. For the 5.7L HEMI V8, the NGK V-Power 16-piece set is the strongest all-around option here, the Champion Copper Plus 16-piece set is the value-focused OE-style alternative, and the Champion Platinum 16-piece set is the platinum-style choice.
For the 3.5L V6, the Champion Platinum six-pack provides the correct six-plug quantity with a listed RC12PEC5 specification. For the 2.7L V6, the NGK V-Power six-pack gives you a dedicated option, but remember that its listed gap differs by model year. Before purchasing any set, confirm your engine, model year, plug type, quantity, and gap, then follow the proper installation and torque procedure.
| Product | Image | Engine | Quantity | Listed Gap | Best For |
|---|---|---|---|---|---|
| 16 pc NGK V-Power Spark Plugs |
 |
2005-2008 5.7L V8 | 16 plugs | 0.044 inches | Best overall 5.7L option |
| 16 pc Champion Copper Plus Spark Plugs |
 |
2005-2008 5.7L V8 | 16 plugs | 0.044 inches | Value-focused OE-style service |
| 16 pc Champion Platinum Spark Plugs |
 |
2005-2008 5.7L V8 | 16 plugs | 0.044 inches | Platinum-style 5.7L option |
| 6 pc Champion Platinum Spark Plugs |
 |
2005-2008 3.5L V6 | 6 plugs | 0.050 inches | 3.5L V6 owners |
| 6 pc NGK V-Power Spark Plugs |
 |
2005-2008 2.7L V6 | 6 plugs | 0.052 in (2005); 0.050 in (2006-2008) | Dedicated 2.7L V6 option |
This roundup is reader-supported. When you click through links, we may earn a referral commission on qualifying purchases at no extra cost to you.
