If you own a 2010 Dodge Ram Hemi, choosing the right spark plugs or a complete ignition kit can help you get back cleaner starts, a steadier idle and better engine response.
The 5.7L Hemi engine uses 16 spark plugs, two per cylinder. Before buying, always confirm exact compatibility with your 2010 Ram 1500, 2500 or 3500, the 5.7L engine, the part number and the guidance in your owner’s manual.
This roundup is reader-supported. When you click Amazon links, we may earn a referral commission on qualifying purchases, at no extra cost to you.
Quick Verdict
For a 2010 Dodge Ram Hemi, the best choices in this selection are the kits that include 8 ignition coils and 16 spark plugs, because they cover the whole ignition system in a single job. The KAX kit is the most complete choice thanks to the included tool. The LCWRGS kit suits you if you want a full-replacement option with a very detailed product listing. The NPAUTO kit remains a solid alternative if you want a straightforward set with coils and plugs together.
Important note: even when a product lists broad Hemi compatibility, enter your year, make, model and engine on Amazon before ordering.
Top Picks
|
Category |
Product |
Best for |
Link |
|---|---|---|---|
|
🏆 Best complete kit |
Full replacement with tool included |
||
|
⚡ Performance option |
Complete ignition system for the 5.7L Hemi |
||
|
👍 Solid alternative |
Replacing coils and plugs together |
How to Choose Spark Plugs and Coils for Your Ram Hemi
Choosing ignition parts for a 2010 Dodge Ram Hemi takes more than picking a brand. You need to check compatibility with the 5.7L engine, the plug type, how many pieces are included, the coil replacement numbers and the tools needed for installation.
The kits below are most useful if your truck has misfires, a rough idle, hard starts or a drop in power. If your coils are still good and you only want to replace the plugs, a complete kit may be more than you need. In that case, compare the total cost against buying plugs alone that match your exact year.
Before You Buy
- Confirm your truck is a 2010 Dodge Ram or Ram with the 5.7L Hemi.
- Check that the kit includes 16 spark plugs if you are replacing every plug on the Hemi.
- Compare the coil part numbers, such as UF504 or the equivalent references shown on the product listing.
- Check the plug gap and the recommended torque in your manual or with a mechanic.
- Avoid ordering on the basis of general Hemi compatibility alone. The exact year matters.
KAX Ignition Coil and Iridium Spark Plug Kit
If you want to replace the coils and the plugs at the same time, the KAX kit is the most practical option in this selection. It saves you sourcing coils, plugs and a tool separately, which can simplify ordering before a maintenance job.
This kit is especially worth a look if your Ram Hemi shows symptoms that can come from a tired ignition system: misfires, hesitation, a rough idle or lost response. Replacing the plugs alone can be enough in some cases, but a complete set makes more sense when the coils are also aging or you want to start from a consistent baseline.
The included tool is a real advantage for DIYers, because reaching the plugs on a Hemi can take time. It does not replace a torque wrench or the instructions in your manual, but it makes the kit more complete than options that include only the parts.
Buyer Feedback
Feedback on this type of kit mostly highlights the good balance between the number of pieces included and ease of installation. As always with ignition parts, exact compatibility with your vehicle should come before reviews.
When This Kit Is Ideal
|
Situation |
How it helps you |
|---|---|
|
You want to replace the whole ignition system |
The kit bundles 8 coils and 16 plugs for a complete job. |
|
You do your own maintenance |
The included magnetic tool can make handling the plugs easier. |
|
Your Hemi hesitates or runs unevenly |
A refreshed ignition system can help address symptoms tied to worn plugs or coils. |
|
You keep your Ram for the long haul |
Replacing wear components together can simplify your maintenance tracking. |
What You Will Like
- Complete kit with 8 coils and 16 plugs
- Magnetic tool included
- Listed compatibility with several 5.7L Hemi vehicles, including some 2010 Rams
- A practical solution if you want to avoid buying each item separately
Things to Consider
- May be more than you need if only your plugs require replacement
- Compatibility must be confirmed against your exact model before buying
- The included iridium plugs may not suit owners who want to stay strictly with the original configuration
LCWRGS Ignition Coil and Spark Plug Kit
The LCWRGS kit is made for drivers who want to order one complete set rather than replace parts one at a time. It covers the coils and the plugs, which can be useful if your Ram has high mileage or if the ignition service history is unclear.
Its main appeal is the listed compatibility with 2010 Ram Hemi trucks and the detailed application list on the product page. That helps reduce uncertainty, but it does not replace checking the Amazon vehicle selector and the part references.
For daily driving, this type of kit is mainly aimed at restoring a steady spark. It should not be sold as a guaranteed gain in power or fuel economy, because the result depends on the condition of the parts you replace, the engine’s overall maintenance and the real cause of the symptoms.
Buyer Feedback
The comments highlighted in the source mention an installation that some DIYers found approachable, and improved engine running after replacement. That feedback remains specific to each buyer’s vehicle and installation conditions.
When This Kit Is Ideal
|
Situation |
How it helps you |
|---|---|
|
Tired or hesitant engine |
Replacing plugs and coils can help if the symptoms come from the ignition system. |
|
Complete maintenance |
You get the main ignition parts in a single set. |
|
Daily driving |
A healthy ignition system can contribute to cleaner starts and a steadier idle. |
|
Towing or hauling |
Healthy ignition components help the engine run properly under load. |
What You Will Like
- Includes 8 coils and 16 plugs
- Listed compatibility with the 5.7L Dodge Ram 1500 and 2500 from 2009 to 2010
- Replacement part numbers shown on the product listing
- A complete solution for bundled maintenance
Things to Consider
- Check that iridium plugs suit your maintenance goal
- Installation can take time and the right tools
- Coils do not always need replacing if they still work correctly
NPAUTO Ignition Coil and Spark Plug Kit
The NPAUTO kit is a good solution if you want a direct set that is easy to compare. It does not stand out as much as KAX on accessories, but it covers the main need: replacing the coils and plugs in the ignition system.
It suits owners who have already diagnosed a likely ignition problem, or who want to carry out broader maintenance. If your truck runs well and you are simply following the plug replacement interval, ask yourself whether the cost of a kit with coils is justified.
As with the other kits, check the product listing against your exact vehicle. Compatibility lists often cover several years and models, which can be useful but also confusing if you do not confirm the details.
Buyer Feedback
The feedback cited in the source mainly points to the fit and ease of installation on certain Hemi vehicles. Those reviews can help you judge the buying experience, but they do not guarantee compatibility with every 2010 Ram configuration.
When This Kit Is Ideal
|
Situation |
How it helps you |
|---|---|
|
Engine stumbling or down on power |
Can help when the diagnosis points to worn coils or plugs. |
|
Bundled maintenance |
Lets you replace the main ignition parts in one order. |
|
Less clean starts |
Healthy plugs and coils can help the engine start more consistently. |
|
Preparing for long-term use |
A well-maintained ignition system helps keep the engine dependable day to day. |
What You Will Like
- Coils and plugs in a single purchase
- Listed compatibility with several 5.7L Hemi vehicles
- Useful if your coils are as suspect as your plugs
- A clear alternative to the other complete kits
Things to Consider
- No installation tool highlighted as on the KAX kit
- Compatibility must be checked against your VIN or exact configuration
- A prior diagnosis avoids replacing coils that still work
How to Choose the Right Kit for Your 2010 Ram Hemi
The right choice depends mostly on the condition of your truck. If you are doing simple scheduled maintenance and the coils show no sign of weakness, you can look for plugs alone that match your exact year. If you have misfires, a coil-related fault code or an uncertain service history, a complete kit can make more sense.
Also consider your comfort level with mechanical work. A Hemi uses a lot of plugs, and access can be tight. If you do not have the right tools, plan for a suitable socket, extensions, a torque wrench and time. When in doubt, a mechanic can confirm whether the coils really need replacing.
Final Recommendation
Choose KAX if you want the most complete kit with a tool included. Choose LCWRGS if you want a detailed kit with compatibility clearly listed for 2009-2010 Dodge Rams. Choose NPAUTO if you want a complete alternative for replacing coils and plugs together.
FAQ
How many spark plugs does a 2010 Dodge Ram Hemi need?
The 5.7L Hemi engine uses 16 spark plugs, because there are two plugs per cylinder. That is why the complete kits in this selection include 16 plugs.
Should I replace the coils at the same time as the plugs?
Not always. If your coils work correctly, replacing only the plugs can be enough. On the other hand, if you have misfires, a rough idle, a fault code or aging coils, a complete kit can be more practical. A diagnosis is still the best way to avoid unnecessary spending.
Are iridium plugs always better for a 2010 Hemi?
Iridium plugs can offer good durability, but the best choice is still the one that matches your engine, the recommended part number and your maintenance goal. Check the manual, the gap, the seat type and the manufacturer’s recommendations before replacing original plugs with a different type.
What symptoms suggest the plugs or coils may be worn?
Common signs include hard starts, an unstable idle, misfires, a drop in power, rising fuel consumption or a check engine light. These symptoms can also come from other causes, so it is better to confirm the diagnosis before replacing parts.
What should you check before ordering on Amazon?
Check the exact year, the 5.7L Hemi engine, the Ram 1500/2500/3500 version, the replacement numbers, the kit contents and the compatibility notes. Use the Amazon vehicle selector and compare the references against your manual or your current parts.
Our Favorites
Our first choice is the KAX Ignition Coil and Iridium Spark Plug Kit, because it brings together the coils, the plugs and a tool that helps with installation. The LCWRGS kit is well worth a look if you want a complete option with a detailed compatibility listing. The NPAUTO kit remains a good alternative if you simply want a coils-plus-plugs set to refresh the ignition.
In Summary
Choosing the right plugs or ignition kit for your 2010 Dodge Ram Hemi can improve starting reliability and help the engine run more evenly if your current parts are worn. The three options kept in this guide match search intent better, because they list compatibility with Ram Hemi trucks around 2010 and include the 16 plugs needed for a full replacement.
Before ordering, always confirm your exact fitment. A good purchase is one that matches your engine, your year, your budget and the kind of maintenance you actually want to carry out.
| Product | Product image | Product type | Listed contents | Best for | Details |
|---|---|---|---|---|---|
| KAX 8Pcs Ignition Coils and 16Pcs Spark Plugs |
 |
Coil and plug kit | 8 coils, 16 plugs, tool included | Best complete kit | See on Amazon |
| Ignition Coil Pack and 16 Iridium Spark Plugs |
 |
Coil and plug kit | 8 coils and 16 plugs | Complete performance-oriented option | See on Amazon |
| Ignition Coil Pack and Spark Plugs |
 |
Coil and plug kit | 8 coils and 16 pre-gapped plugs according to the product listing | Solid alternative | See on Amazon |
This roundup is reader-supported. When you click through links, we may earn a referral commission on qualifying purchases.
1 thought on “3 Best Spark Plugs For 2010 Dodge Ram Hemi”