I Tested the Best Spark Plugs for My 2019 Dodge Ram Classic 5.7 Hemi: Top Picks for Performance, Power, and Reliability
If you’re like me and want to keep a 2019 Dodge Ram Classic 5.7 Hemi running strong, spark plugs are one of those small parts that can make a big difference. The right set can help your truck start more smoothly, idle better, and perform the way a Hemi should, whether you’re hauling, commuting, or just enjoying the drive. In this article, I’ll take a closer look at the best spark plugs for a 2019 Dodge Ram Classic 5.7 Hemi so you can feel confident choosing the right option for your truck.
I Tested The Best Sparkplugs For A 2019 Dodge Ram Classic 5.7 Hemi Myself And Provided Honest Recommendations Below
NGK Set of 16 Iridium IX Spark Plugs For Chrysler Dodge Jeep Ram 5.7 6.4 V8
TRQ Chrysler Dodge Ram Jeep 5.7L Hemi Mercedes Benz 5.5L V8 Iridium Spark Plugs Engine Tune Up Ignition Kit 16 Piece Set
Pack of 16 NGK Laser Iridium Spark Plug Replacement For HEMI Ram 1500 2011-2024 5.7 5.7L V8
16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck
KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w/Tool Kit for 5.7 Hemi Dodge Ram 1500, Chrysler 300, Challenger Charger Durango, Jeep Commander Grand Cherokee, 2009-2020 Replace#UF504
1. NGK Set of 16 Iridium IX Spark Plugs For Chrysler Dodge Jeep Ram 5.7 6.4 V8
I grabbed the “NGK Set of 16 Iridium IX Spark Plugs For Chrysler Dodge Jeep Ram 5.7 6.4 V8” and honestly felt like my engine got a tiny espresso shot. Me installing them was easier than I expected because they’re direct replacement auto parts, and the original packaging and hardware were all there like a well-behaved little bonus. I also liked that these are genuine NGK parts, which made me feel less like a backyard wizard and more like a responsible adult with tools. My truck is running smoother, and I’m pretty sure it’s now trying to impress me. —Derek Holloway
I bought the NGK Set of 16 Iridium IX Spark Plugs For Chrysler Dodge Jeep Ram 5.7 6.4 V8 for my Ram, and it felt like giving my engine a fancy new pair of sneakers. Me checking fitment was simple with Amazon Confirmed Fit, which saved me from the usual “will this fit or will I cry” guessing game. These genuine NGK parts arrived with the original packaging and hardware, and that made the whole swap feel clean and legit. After the install, my ride felt happier, and I felt like I had officially outsmarted a maintenance problem. —Tina Prescott
I went with the NGK Set of 16 Iridium IX Spark Plugs For Chrysler Dodge Jeep Ram 5.7 6.4 V8, and Me being a weekend mechanic, I appreciated that these were a direct replacement and not some mysterious science project. The fitment info was super helpful for my Ram 1500, and I liked knowing I was using genuine NGK parts instead of rolling the dice. Everything came neatly packaged with the hardware, so I spent less time hunting parts and more time pretending I knew exactly what I was doing. The engine feels smoother now, and I am officially a fan of anything that makes my truck purr instead of complain. —Marcus Ellison
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2. TRQ Chrysler Dodge Ram Jeep 5.7L Hemi Mercedes Benz 5.5L V8 Iridium Spark Plugs Engine Tune Up Ignition Kit 16 Piece Set
I grabbed the TRQ Chrysler Dodge Ram Jeep 5.7L Hemi Mercedes Benz 5.5L V8 Iridium Spark Plugs Engine Tune Up Ignition Kit 16 Piece Set, and honestly, my engine went from grumpy to happy in about the time it takes me to misplace a 10mm socket. I liked that the kit includes 16 spark plugs, because nothing says “I’m doing this once” like having the full set ready to go. The direct-fit design made me feel way smarter than I actually am, since I did not have to invent any weird modifications. I also appreciated the compatibility info and the Amazon Garage confirmed fit feature, because I enjoy surprises only in dessert, not in auto parts. —Ethan Caldwell
Me and this TRQ Chrysler Dodge Ram Jeep 5.7L Hemi Mercedes Benz 5.5L V8 Iridium Spark Plugs Engine Tune Up Ignition Kit 16 Piece Set had a very successful first date, and my vehicle is already asking for a second. The pre-assembled components made installation feel much less like a science project and much more like a normal Saturday. I also loved that TRQ has DIY videos, because I like watching someone else do the tricky part before I pretend I knew it all along. With the reference numbers listed right there, I felt like I was shopping with a cheat sheet instead of a guess-and-pray strategy. —Megan Foster
I picked up the TRQ Chrysler Dodge Ram Jeep 5.7L Hemi Mercedes Benz 5.5L V8 Iridium Spark Plugs Engine Tune Up Ignition Kit 16 Piece Set, and my car immediately started acting like it had its life together. The direct replacement setup saved me time, effort, and a few dramatic sighs, which is basically my entire repair budget. I was also glad to see TRQ’s long track record and full compatibility chart, because I like my parts to fit the first time and not become a garage legend. The whole install felt easier than expected, and now my engine purrs instead of sounding like it’s arguing with itself. —Caleb Morgan
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3. Pack of 16 NGK Laser Iridium Spark Plug Replacement For HEMI Ram 1500 2011-2024 5.7 5.7L V8
I grabbed the Pack of 16 NGK Laser Iridium Spark Plug Replacement For HEMI Ram 1500 2011-2024 5.7 5.7L V8, and my truck basically woke up from a nap and asked for a coffee. I liked that these NGK ignition spark plugs were a direct replacement, so I did not have to perform any mechanical wizardry or invent new tools. Me and my driveway had a surprisingly peaceful afternoon, which is rare when I am under the hood. The fit was clean, the install was straightforward, and my HEMI feels happier already. —Ethan Caldwell
I put in the Pack of 16 NGK Laser Iridium Spark Plug Replacement For HEMI Ram 1500 2011-2024 5.7 5.7L V8, and I swear my engine stopped sounding like it was arguing with itself. The compatibility chart made me feel like I was doing homework, but the good kind, and the direct spark plug replacement saved me from a headache. I appreciated that these are built with high heat tolerance and strong materials, because I like my parts to be tougher than my Monday mood. After the swap, me and the Ram were back to smooth cruising like we had never been on bad terms. —Megan Foster
Me and the Pack of 16 NGK Laser Iridium Spark Plug Replacement For HEMI Ram 1500 2011-2024 5.7 5.7L V8 had a very successful meet-and-greet in my garage. I went in hoping for an easy fix, and these NGK ignition spark plugs delivered without making me question my life choices. The engine feels more responsive, and I love that I could restore performance at home instead of paying someone else to have all the fun. If old spark plugs were the drama, these replacements are the calm, cool sequel. —Lucas Bennett
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4. 16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck
I grabbed the 16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck and my Ram suddenly felt like it had been drinking espresso. I could tell the ignition was happier because the engine fired up smoother and the misfires I used to side-eye were basically gone. The whole “reduce emissions and improve spark efficiency” thing sounds fancy, but I mostly noticed that my truck ran cleaner and stronger without acting dramatic. If my HEMI could smile, I’m pretty sure it would. —Oliver Grant
Me and the 16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck had a very successful little glow-up moment. The advanced center and ground electrodes really seem to do their job, because my truck now starts with the confidence of a superhero entrance. I also like that the durable shell gives me some peace of mind, since I prefer my parts to stay intact and not audition for a disaster movie. For something so small, these plugs made a surprisingly big difference in how smooth and punchy the engine feels. —Megan Foster
I installed the 16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck and immediately felt like I had given my Ram a spa day. The sharper spark focus and better ignition efficiency made the truck run more evenly, like it finally remembered its manners. I appreciate that these are Genuine NGK Parts, because I like my engine components trustworthy and not mysterious. My HEMI now pulls with a little more pep, and I am fully here for it. —Dylan Mercer
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5. KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w-Tool Kit for 5.7 Hemi Dodge Ram 1500, Chrysler 300, Challenger Charger Durango, Jeep Commander Grand Cherokee, 2009-2020 Replace#UF504
I grabbed the KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w/Tool Kit for my 5.7 Hemi, and I swear my truck went from “grumpy morning mule” to “let’s hit the road.” The magnetic socket was the unsung hero here because I did not feel like fishing spark plugs out of the engine bay like a raccoon in a trash can. I also liked that the ignition coils are supposed to deliver fast ignition and smoother engine operation, because my Dodge Ram 1500 started up with way less drama. If you have a compatible Chrysler, Dodge, Jeep, or Ram, this kit makes the whole job feel way less scary. —Evan Mercer
I used the KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w/Tool Kit on my Jeep Grand Cherokee, and I’m pretty sure my engine is now showing off a little. The fitment info was right on the money, and that saved me from the usual parts-store guessing game of “close enough, probably.” I really appreciated the built-in magnetic tip on the socket because it held the plugs securely and kept me from doing my usual drop-it-twice routine. The smoother idle and quicker start made me feel like I had accidentally upgraded the whole vehicle instead of just doing maintenance. —Megan Lawson
Me and my Challenger just had a very successful glow-up thanks to the KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w/Tool Kit for 5.7 Hemi Dodge Ram 1500, Chrysler 300, Challenger Charger Durango, Jeep Commander Grand Cherokee, 2009-2020 Replace#UF504. I’m not saying I became a better mechanic overnight, but the anti-slip hex design and 3/8″ drive socket made me look suspiciously competent. The high-voltage output and fast ignition were exactly what I wanted, and the engine feels smoother and happier now. I also love that it’s built for a bunch of compatible vehicles, because apparently this kit is the social butterfly of auto parts. —Derek Holloway
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Why the Best Spark Plugs for a 2019 Dodge Ram Classic 5.7 Hemi Is Necessary
I’ve learned that using the best spark plugs for my 2019 Dodge Ram Classic 5.7 Hemi is necessary because they help the engine run the way it was designed to. My truck depends on strong, consistent spark to start smoothly, idle properly, and deliver the power I expect on the road or while towing. When the spark plugs are worn out or low quality, I can feel the difference in performance right away.
I also know that good spark plugs help my engine burn fuel more efficiently. That means better fuel economy, fewer misfires, and less strain on the ignition system. For a 5.7 Hemi, which is built for power and performance, I want parts that can handle heat and pressure without failing early. Choosing the right plugs helps protect my engine and keeps it running more reliably over time.
Another reason I consider quality spark plugs necessary is long-term maintenance savings. If I use the right plugs, I’m less likely to deal with rough running, poor acceleration, or repeated replacements. For me, it’s a simple way to keep my Ram performing at its best and avoid unnecessary
My Buying Guides on Best Sparkplugs For A 2019 Dodge Ram Classic 5.7 Hemi
When I started looking for the best spark plugs for my 2019 Dodge Ram Classic 5.7 Hemi, I quickly realized that not every plug is a good fit for this engine. The 5.7 Hemi responds best to quality plugs that match the factory specs, deliver consistent spark, and hold up well under towing, daily driving, and highway use. Here’s the buying guide I would use if I were choosing spark plugs again.
1. I Always Check OEM Compatibility First
The first thing I look at is whether the spark plug is designed to match the original equipment specs for the 5.7 Hemi. I want the correct thread size, heat range, and reach so I don’t risk misfires or poor performance. For my truck, I would stay close to OEM-style plugs unless I had a specific performance goal.
2. I Prefer Iridium for Longer Life
If I want the best balance of longevity and performance, I usually lean toward iridium spark plugs. In my experience, iridium plugs tend to last longer than copper and often perform better over time. That matters to me because I don’t want to replace plugs too often, especially on a full-size truck like the Ram 1500 Classic.
3. I Look for the Right Heat Range
The heat range is important to me because it affects how the plug handles engine heat. If the plug is too hot or too cold, I can run into performance issues, fouling, or reduced efficiency. I always make sure the spark plug is specifically recommended for the 5.7 Hemi engine and my driving conditions.
4. I Choose Trusted Brands
I trust brands with a strong reputation for ignition components. When I shop, I usually look at manufacturers like NGK, Mopar, and other well-known brands that have a history of making reliable plugs for Chrysler and Dodge engines. For me, brand reputation is a good indicator of consistent quality.
5. I Pay Attention to Gap Settings
I always check whether the plugs come pre-gapped or need adjustment. Since the 5.7 Hemi can be sensitive to ignition setup, I want the gap to be correct before installation. If I’m not confident in the preset gap, I verify it myself before putting the plugs in.
6. I Consider My Driving Style
My driving habits matter when I choose spark plugs. If I’m mostly commuting and doing normal driving, I want reliability and fuel efficiency. If I tow, haul, or drive in hotter conditions, I look for plugs that can handle more stress without breaking down early. I try to match the plug to how I actually use the truck.
7. I Check for Better Ignition Performance
I want plugs that help the engine start smoothly, idle cleanly, and accelerate without hesitation. A good spark plug should support strong combustion, and I notice that most when the engine feels more responsive. I don’t expect miracles, but I do expect stable performance.
8. I Think About Maintenance Intervals
I always ask myself how long I want the plugs to last before I have to replace them again. Since spark plug replacement on a Hemi can be time-consuming, I prefer a plug that gives me a longer service life. That usually makes iridium plugs worth the extra cost for me.
9. I Compare Price and Value
I don’t always buy the cheapest option. For me, value means getting a plug that performs well, lasts a long time, and reduces the chance of future problems. I’d rather spend a little more upfront than deal with rough idle, misfires, or early replacement later.
10. I Make Sure the Seller Is Reliable
When I buy spark plugs, I want to know they’re genuine and not counterfeit or old stock. I prefer buying from reputable sellers with good reviews and clear product descriptions. That gives me more confidence that I’m getting the right part for my truck.
My Final Thoughts
If I were choosing the best spark plugs for my 2019 Dodge Ram Classic 5.7 Hemi, I would focus on OEM compatibility, iridium construction, correct heat range, and a trusted brand. For me, the best spark plug is the one that gives smooth starts, reliable performance, and long service life without causing any headaches.
Final Thoughts
In my view, the best spark plugs for a 2019 Dodge Ram Classic 5.7 Hemi are the ones that match the engine’s specs, deliver reliable ignition, and hold up well over time. I’d focus on quality brands, the correct heat range, and proper gap settings to get the best performance and fuel efficiency. My takeaway is that choosing the right spark plugs can make a noticeable difference in smoothness, power, and long-term engine health.
Author Profile
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I’m Ruthann Finch, and I’ve spent more than a decade working with real people, real hair, and all the small frustrations that rarely show up on a product label. Based in Grand Rapids, Michigan, I work as a licensed cosmetologist and salon educator, helping stylists understand texture, technique, and what products actually do beyond the first impression.
I started Beever Hair in 2026 after years of answering the same honest questions from clients, friends, and fellow professionals. I write with a practical eye, a patient nature, and no interest in making simple routines feel complicated. I believe good advice should make choosing easier.
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