Best Spark Plugs For Ram 1500 5.7 Hemi

If you own a Ram 1500 with the legendary 5.7 Hemi, you know how critical maintenance is for keeping that V8 running strong. I’ve been through the process of changing the 16 spark plugs required, and choosing the right set makes a huge difference in power delivery and startup reliability. We’re diving deep into the options to help you find the best spark plugs for Ram 1500 5.7 Hemi so you can keep your truck performing its absolute best.

IMAGE	PRODUCT NAME	AMAZON LINK
	16 pc NGK Iridium IX Spark Plugs compatible with Ram…	View on Amazon
	16 pc Champion Copper Plus Spark Plugs compatible with…	View on Amazon
	16 pc Champion Iridium Spark Plugs compatible with Ram…	View on Amazon
	16 pc Autolite Platinum Spark Plugs compatible with Ram…	View on Amazon
	Ignition Coil Pack Spark Plugs fit for 5.7 Hemi Dodge…	View on Amazon

16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck

NGK’s Iridium IX line is often considered the gold standard for drivers looking for a blend of performance and incredible lifespan. These genuine NGK parts are designed to stand up to the high-heat demands of the Hemi engine, significantly reducing misfires and ensuring efficient combustion. If you want maximum longevity and consistent output between service intervals, these plugs are an excellent investment for reliable Hemi performance.

Key features that stand out:
– Iridium Construction: Provides extreme durability and a finely focused spark.
– Improved Ignitability: Advanced electrodes lead to quicker, stronger combustion.
– Reduce Emissions and Misfires: Promotes better fuel economy and smoother idle, especially important in MDS-equipped trucks.

Pros:
– Long service life, often exceeding 100,000 miles.
– Highly consistent spark performance across all 16 plugs.
– Superior heat dissipation compared to standard plugs.

Cons:
– They are generally one of the more expensive options upfront.

Best for: Drivers seeking premium performance and the longest possible maintenance interval.

Expert Opinion: NGK consistently engineers plugs that meet or exceed OE specifications, especially for demanding V8 applications like the Hemi. Their tapered ground electrode design aids in starting reliability and resists fouling exceptionally well.

16 pc Champion Copper Plus Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck

Champion Copper Plus plugs are the traditional choice for Hemi owners who prioritize raw conductivity and low cost. Copper is an incredibly efficient conductor, offering a sharp, powerful spark. While they won’t last as long as their iridium counterparts, many enthusiasts prefer the powerful initial punch these plugs deliver. This set ensures a seamless OE-quality replacement part that meets tough industry standards.

Key features that stand out:
– Copper Core: Offers the best conductivity for a strong initial spark.
– Genuine Champion Parts: Trusted heritage in racing and OE applications.
– Low Cost: Extremely affordable compared to precious metal options.

Pros:
– Outstanding initial spark quality and power.
– Highly budget-friendly option for those who do their own maintenance.
– Easy to gap and install correctly.

Cons:
– Requires changing much sooner, typically between 30,000 to 40,000 miles.

Best for: Performance enthusiasts who enjoy frequent maintenance or drivers on a strict budget.

Expert Opinion: While copper plugs require shorter change intervals, their high conductivity often yields a noticeable crispness in throttle response right after installation. They are a reliable and proven choice, especially for older or heavily tuned Hemis.

16 pc Champion Iridium Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI

Combining Champion’s heritage with advanced precious metal technology, these Iridium plugs offer a significant upgrade over standard copper. The fine-wire center electrode and V-trimmed ground electrode enhance performance by allowing faster combustion and minimizing the chance of quenching or misfires. These are designed to withstand high-pressure environments, ensuring your Hemi maintains its power output over a long period.

Key features that stand out:
– Iridium Fine-Wire Electrode: Creates a focused flame kernel for faster combustion.
– V-Trimmed Ground Electrode: Further minimizes quenching, optimizing spark exposure.
– Durable Construction: Built with iridium to withstand high heat and pressure.

Pros:
– Excellent lifespan comparable to other iridium options.
– Improved fuel efficiency and startup reliability compared to old plugs.
– A strong middle ground between the Copper Plus and premium NGK options.

Cons:
– The performance benefit over Platinum/Copper is less pronounced than the longevity benefit.

Best for: Ram owners looking for long-lasting, reliable plugs from an OE supplier without breaking the bank.

Expert Opinion: Champion Iridium plugs are a great “set-it-and-forget-it” option. They deliver excellent long-term durability, making them a sensible choice for daily drivers who want minimal service fuss.

16 pc Autolite Platinum Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI

Autolite Platinum plugs are designed specifically for maximum performance and improved durability. They utilize a platinum-to-platinum firing design, ensuring the gap remains precise with virtually no erosion over time. The necked-down center electrode fires quicker and cleaner, reducing the voltage required for easier starts and quicker acceleration—a great benefit in colder climates or for trucks with demanding starting cycles.

Key features that stand out:
– Platinum-to-Platinum Firing: Ensures superior durability and maintained gap.
– Yttrium Enhanced Ground Electrode: Provides superior heat transfer, crucial for preventing premature wear.
– Necked-Down Center Electrode: Fires quicker and requires less voltage.

Pros:
– Excellent resistance to gap erosion, extending life.
– Helps optimize engine performance for better fuel economy.
– Reputable OE replacement brand since 1936.

Cons:
– Platinum typically doesn’t offer the extreme longevity of Iridium plugs.

Best for: Drivers who prioritize cold starts and quick acceleration without moving up to the highest-tier iridium price point.

Expert Opinion: Platinum plugs are an established step up from copper, offering much greater durability. Autolite’s focus on platinum-to-platinum firing means these plugs maintain consistency throughout their lifespan, which is key for maintaining Hemi efficiency.

Ignition Coil Pack Spark Plugs fit for 5.7 Hemi Dodge Ram 1500, Chrysler 300, Challenger Charger Durango, Jeep Commander Grand Cherokee, 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

This option is unique because it’s a comprehensive maintenance solution, providing a set of 8 ignition coils and 16 spark plugs. Since the 5.7L Hemi uses one coil for every two spark plugs, if your truck is reaching high mileage (especially over 100k miles), replacing coils along with the plugs can solve issues like Engine Misfire, Hard to Start, and Rough Engine Idle. This combo ensures your entire ignition system is working efficiently.

Key features that stand out:
– All-in-One Solution: Includes 8 ignition coils and 16 spark plugs.
– Addresses Multiple Issues: Designed to solve problems caused by failed coils and worn-out plugs simultaneously.
– Meets/Exceeds OEM Specs: Built with premium materials for reliable operation.

Pros:
– Perfect solution for high-mileage or neglected trucks.
– Great value when considering the cost of coils separately.
– Simplifies the maintenance process by providing everything needed in one kit.

Cons:
– If your coils are brand new, you are buying unnecessary parts.

Best for: Owners of older Hemi models (2009–2015) experiencing rough idle, misfires, or those performing major 100k+ mile ignition system maintenance.

Expert Opinion: When spark plugs wear out, they demand more voltage from the coils, leading to premature coil failure. For preventive maintenance on older vehicles, replacing coils and plugs together is the most practical and reliable way to restore peak ignition performance.

Comparison Insights for Best Spark Plugs For Ram 1500 5.7 Hemi

Choosing the right material is the biggest factor when buying spark plugs for Ram 1500 5.7 Hemi.

If budget is your primary concern, Champion Copper Plus wins hands down. However, remember that you’ll be changing them every 30k–40k miles, so the labor adds up quickly if you’re paying a mechanic. Copper offers the sharpest initial spark but also the shortest life.

For drivers prioritizing longevity and maintenance intervals, the Iridium options—the NGK Iridium IX and the Champion Iridium—are the best choices. Both are engineered to last 100,000 miles or more. The NGK often gets the edge in minor performance boosts, while the Champion is a highly reliable, slightly more affordable high-mileage option.

The Autolite Platinum sits neatly in the middle, offering strong durability and resistance to gap erosion that copper lacks, generally lasting longer than copper but usually slightly less than full iridium.

Finally, if you’re dealing with an older truck, seriously consider the Coil Pack and Spark Plug combo. The Hemi’s design stresses the coils, and replacing all components at once often yields the most dramatic improvement in smooth running and power restoration. Misfires in the 5.7 Hemi are often a joint plug/coil issue, making the combo a smart preventative measure.

Final Verdict: Which Spark Plug Should You Choose?

Deciding on the best spark plugs for your 5.7 Hemi depends entirely on your maintenance goals and driving habits.

The Longevity Champion: If you want the absolute best lifespan and reliable performance without thinking about plugs for years, go with the 16 pc NGK Iridium IX Spark Plugs. They offer superior durability under the Hemi’s high demands.

The Performance Budget Pick: For truck owners who enjoy doing their own wrenching and want crisp throttle response at a low cost, the 16 pc Champion Copper Plus Spark Plugs are your go-to. Just be ready to change them frequently.

The All-Around Smart Choice: For the average daily driver seeking an excellent balance between quality, longevity, and price, we recommend the 16 pc Champion Iridium Spark Plugs. They provide great durability from a trusted name without the top-tier pricing of some competitors.

Best Spark Plugs For Ram 1500 5.7 Hemi FAQ

How many spark plugs does the Ram 1500 5.7 Hemi require?

The 5.7L Hemi engine utilizes two spark plugs per cylinder, meaning you need a total of 16 spark plugs for a complete replacement. This dual-plug design helps ensure a complete burn of the fuel mixture, which is crucial for Hemi performance and efficiency.

What is the recommended spark plug change interval for the 5.7 Hemi?

For copper or standard nickel plugs (like Champion Copper Plus), the interval is typically 30,000 miles. For precious metal plugs like Iridium or Platinum, most manufacturers recommend replacement around 90,000 to 100,000 miles. Always check your specific Ram owner’s manual for the exact recommended maintenance schedule.

Does the type of spark plug affect the MDS (Multi-Displacement System) on the Hemi?

Yes, indirectly. The MDS system relies on the engine running smoothly, and weak or worn-out spark plugs can cause misfires. Misfires often confuse the engine control unit (ECU), leading to rough operation, sometimes manifesting as difficulty engaging or disengaging the MDS. Using quality iridium or platinum plugs helps maintain consistent combustion necessary for smooth MDS operation.

Is it necessary to replace the ignition coils when I change the spark plugs?

It is not always necessary, but it is highly recommended, especially if your truck is over 100,000 miles or you are already experiencing misfires. Old, worn-out plugs demand more voltage from the coils, leading to premature coil fatigue. Replacing the plugs and coils together (like in the combo kit reviewed) ensures your entire Hemi ignition system is refreshed.

What spark plug gap is required for the 5.7L Hemi?

The standard spark plug gap for the Ram 1500 5.7 Hemi is typically around 0.043 inches (or 1.1 mm). While most new iridium and platinum plugs come pre-gapped, it is crucial to always confirm the gap setting using a feeler gauge to match the specific requirements of your engine model year.

Can using the wrong spark plug material hurt Hemi performance?

Using the wrong material won’t necessarily “hurt” the engine, but it will affect performance and durability. For instance, using copper plugs instead of recommended platinum or iridium will lead to drastically shorter change intervals and potentially rougher operation as they wear down quickly under the Hemi’s high heat. Sticking to high-quality platinum or iridium options is best for maximum efficiency and longevity in modern 5.7 Hemi performance.