Does your 2015 Ram 1500 5.7 Hemi feel a little sluggish lately? That legendary engine is known for its raw power, but it relies on a very specific set of spark plugs to stay at the top of its game. If your truck is misfiring, idling roughly, or losing fuel efficiency, those tiny metal components are likely the culprits behind the curtain.
Choosing the right replacement can feel like a headache. The 5.7 Hemi engine is unique because it uses a dual-plug system, meaning you have sixteen plugs to replace instead of the usual eight. With so many brands, materials, and heat ranges on the market, it is easy to pick the wrong ones and hurt your truck’s performance. You do not want to waste your money on parts that cause your engine to stumble or fail prematurely.
In this guide, we will cut through the confusion. We explain exactly what your Hemi needs to run smoothly and which brands offer the best reliability for your daily drive or heavy towing. By the end of this post, you will have the confidence to pick the perfect set of plugs for your Ram. Let’s dive into the details so you can get your truck back to its full, roaring potential.
Top Spark Plugs For 2015 Ram 1500 5.7 Hemi Recommendations
- 【Compatibility Information】：Spark Plug 4024123628 Compatible with Ram 1500 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 Big Horn Crew Cab Pickup 4-Door 5.7L V8 GAS OHV Naturally Aspirated.Please see images or details page for complete Compatibility information.
- 【Spark Plug Features】:BDFHYK Spark plugs with superior ignition performance, faster and more sensitive ignition jumps, significant increase in power performance, saving energy consumption in the ignition process, efficiently adapted to the needs of the car. Exquisite production process, 100% brand new high quality auto parts, OE level durability.
- 【Relive Performance】:OE standard performance and durability TS16949 certified manufacturer. All center electrodes are made from extremely fine iridium electrodes for good ignition performance. Insulators are made from isostatic ceramics for high density, strength, and good insulation.
- 【OE Part Numbers】:Spark Plug compatible to 4024123628.Please confirm the compatibility according to the year/make/model of your vehicle and the OE number of the replaceable part.
- 【About BDFHYK】A professional auto parts manufacturer with mature industry lines. We have our factory and experienced developer.We are committed to providing a 12-month quality service. If you have any questions,contact with us,we will reply you in 24 hours and offer the solve way for you.Choose BDFHYK,choose good service.
- Genuine NGK Parts
- REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, and enables better performance so that your engine runs at its best; The durable shell reliably protects the spark plug from damage, ensuring long-lasting sparking capabilities; The center and ground electrodes promote sharper spark focus for fewer misfires
- IMPROVE IGNITION AND SPARK EFFICIENCY: This Spark Plug employs advanced center and ground electrodes to produce complete and efficient combustion and deliver an outstanding spark for faster, stronger, and more powerful combustion over the life of the spark plug; The damage-tolerant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency
- TRUST IN NGK NTK: Explore components built by the world leader in the design of spark plugs and oxygen sensors; Their attention to performance excellence is what has differentiated them from the competition and allowed them to be the number one supplier of spark plugs and oxygen sensors
- This 16 pack NGK Iridium IX Spark Plug is compatible with Ram 1500 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011 5.7L V8
- Genuine NGK Parts
- Includes original packaging and hardware
- Direct replacement auto parts
- Confirm vehicle fitment with Amazon Confirmed Fit
- NGK IGNITION SPARK PLUGS, This set of NGK Ignition spark plugs provides a quick and easy, direct spark plug replacement to your engine, giving your vehicle the spark it needs.
- COMPATIBILITY, Professionally designed for a truly versatile fit . For finding compatibility to your vehicle, please use the chart included in the description.
- AVOID DAMAGE CAUSED BY OLD SPARK PLUGS, With these ignition coil replacements, you can effectively avoid the consequences of a faulty ignition coil, and ultimately save hundreds of dollars in future repairs. Easily restore your vehicle’s performance and drivability at home or bring your own spark plugs to your professional mechanic.
- MATERIALS, Manufactured using only the highest material selection, each aspect of the ignition coil replacements is properly designed and crafted for long lasting and a seamless fit. With incomparably high electrical resistance and tolerance against high heat temperatures, you can avoid cracks, pin holes and imperfections that often lead to engine issues.
- We are so confident that you will be satisfied with your Spark Plugs Replacements Set, that if for any reason you are unsatisfied, we ask that you please reach out to our customer service team, and we’ll be sure to fix your problem.
- RESTORE PEAK PERFORMANCE & SAVE FUEL: Unlock horsepower, boost throttle response, cut gas costs. Worn ignition parts lose power and waste fuel. Autoexact high-performance coil & iridium plugs deliver stronger, stabler sparks for full combustion—smoother acceleration, less shaking, better fuel economy
- ELIMINATE MISFIRE & ROUGH IDLE: Tired of shaking, check engine light (P0300-P0308 codes) or poor starting? Autoexact ignition coil and spark plug set fixes these issues, restoring smooth, quiet engine run. Enjoy reliable starts every time
- PREMIUM IRIDIUM & OE-QUALITY: Pre-gapped fine-wire iridium spark plugs (up to 40,000 miles life) ensure full combustion for max power and fuel economy. Epoxy-potted, heat-resistant ignition coils deliver strong ignition energy and durability—better than standard OEM parts
- DIRECT OE REPLACEMENT & EASY DIY: 100% OEM fit, no mods needed, plug-and-play. Made for your vehicle’s make, model & VIN. Factory pre-lubricated with green dielectric grease for true plug-and-play installation. Recommended torque: 18.44-22.13 ft·lb (25-30 N·m). Package Contents: 8pcs Ignition Coils Packs, 16pcs Iridium Spark Plugs. Step-by-step install photos available on the detail page, DIY-friendly with basic tools to reduce labor costs.
- VEHICLE COMPATIBILITY: 2011-2024 Ram 1500 5.7L, 2019-2022 Ram 1500 Classic 5.7L, 2008-2010 Dodge Ram 1500 5.7L, 2011-2018 Ram 2500 5.7L, 2008-2009 Dodge Durango 5.7L, 2011-2024 Dodge Durango 5.7L, 2008-2023 Jeep Grand Cherokee 5.7L, 2009-2023 Dodge Charger 5.7L, 2022-2023 Jeep Wagoneer 5.7L, 2009-2010 Dodge Ram 2500 5.7L, 2009-2022 Chrysler 300 5.7L, 2009-2019 Dodge Challenger 5.7L, 2011-2018 Ram 3500 5.7L, 2021-2024 Jeep Grand Cherokee L 5.7L, 2008-2010 Jeep Commander 5.7L etc.
- Vehicle Fitment-1: Spark Plug Compatible with Dodge Challenger 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 V8 5.7L, Charger 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 V8 5.7L, Durango 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 V8 5.7L, Durango 2009 V8 5.7L, Durango 2008 2009 V8 4.7L, Fits Ram 1500 2009 2010 V8 5.7L, Fits Ram 1500 2008 2009 2010 V8 4.7L, Fits Ram 2500 2009 2010 V8 5.7L, Fits Ram 3500 2009 V8 5.7L
- Vehicle Fitment-2: Bujias Compatible with Ram 1500 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 V8 5.7L, Fits Ram 2500 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 V8 6.4L, Fits Ram 2500 2011 2012 2013 2014 2015 2016 2017 V8 5.7L, Fits Ram 3500 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 V8 6.4L, Fits Ram 3500 2011 2012 2013 2014 2015 2016 2017 2018 V8 5.7L
- Vehicle Fitment-3: Iridium Platinum Spark Plugs Compatible with Chrysler 300 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 V8 5.7L, Aspen 2008 2009 V8 4.7L. Car Sparks Plugs Compatible with Jeep Grand Cherokee 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 V8 5.7L, Grand Cherokee 2008 2009 V8 4.7L, Commander 2009 2010 V8 5.7L, Commander 2008 2009 V8 4.7L
- ENA Automotive Replacement Spark Plugs Reference Number: 5018 LFR5AGP 05149050AB 05149177AB 1118282Z00 1118282Z10 1822A086 1884011051 1884511160 1885011050 224015M015 22401ZE01B 224482Y001 224487S015 224488H310 224488H315 224488J111 224488J115 5324 5325 68079888AB 9091901233 90919A1003 948200615 AP5324 AP5325 AR5324 P143877AA. Engineered with pre-gapped features for easy installation, the ENA sparkplugs are compatible with 08 09 10 11 12 13 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Challenger Charger Durango Ram 1500 2500 3500 Aspen 300 Grand Cherokee Commander 1500 2500 3500 5.7L 4.7L 6.4L engines
- ENA 5018 Sparkplug Specifications: 1. Center Electrode Tip Material: Iridium Platinum; 2. Gap Size (IN): 0.039; 3. Hex Size (IN): 0.63; 4. Thread Diameter (MM): 14. Package Content: Set of 16 Iridium Platinum Spark Plugs; 12-Month Warranty. Drive forward with durable sparkplugs set. Please enter your vehicle in your Amazon Garage above to see if this part is compatible with your vehicle
- [Vehicle Fitment 1]:Compatible with [Chrysler] 2009-2023 300 5.7L(Except 2013) 2009-2009 Aspen GAS [Dodge] 2009-2023 Charger 5.7L 2011-2023 Durango 5.7L GAS 2009-2022 Challenger 5.7L 2009-2010 Ram 1500/2500 5.7L 2009 Ram 3500 5.7L, Durango 5.7L GAS
- [Vehicle Fitment 2]:Compatible with [Jeep] 2009-2023 Grand Cherokee 5.7L 2022-2023 Wagoneer 5.7L 2021-2023 Grand Cherokee L 5.7L 2009-2010 Commander 5.7L [Ram] 2011-2022 1500 5.7L 2019-2023 1500 Classic 5.7L 2011-2018 2500/3500 5.7L
- [Reference Number]:92145, LZFR5CI11, 9055, 9673, 8162, REC12WMPB5, FR8SII33X, 6734, FR8SPP30X, REC10WMPB, UF504
- [Magnetic Socket]:Its built-in magnetic tip securely holds spark plugs during installation/removal, reducing dropped parts, while the anti-slip hex design prevents rounding. its universal 3/8" drive works with standard ratchets – making spark plug changes faster, safer, and frustration-free for both mechanics and DIYers.
- [ Direct Fit & Easy Installation]:Designed as a precise OEM replacement for seamless integration. Enjoy quick, tool-free installation—simply unplug the old unit and connect the new one. Perfectly matches original vehicle specifications for a hassle-free maintenance experience.
- Kit Includes: 16 Spark Plugs
- Reference Numbers: XP5325; 004 159 13 03; 06K 905 601 B; 06K 905 601 C; 06K 905 611 C; 09482-00606; 09482-00615; 11182-82Z10; 12 12 0 032 137; 12 12 0 032 138; 12290-PHM-A01; 12290-RBJ-003; 12290-RMX-003; 12290-RMX-004; 12290-RMX-013; 12290-RMX-014
- YOUR TRUSTED DIY VIDEO SOURCE: TRQ offers the largest catalog of DIY videos for replacement parts, making installation easier and repairs more accessible. Our mission is to help you "View Before You Do," with hundreds of new videos added weekly.
- TRUST & COMPATIBILITY: For over 25 years, TRQ has been the premium choice for direct-fit replacement parts. Confirm fitment with the Amazon Garage "confirmed fit" feature and review our full compatibility chart below before purchase.
- EASE OF INSTALLATION: Save time and effort with pre-assembled components designed as direct replacements for the original equipment, ensuring precise fit and eliminating the need for modifications.
The Complete Guide to Choosing Spark Plugs for Your 2015 Ram 1500 5.7L Hemi
The 5.7L Hemi engine is the heart of your 2015 Ram 1500. This powerful engine needs reliable spark plugs to run smoothly. Because the Hemi uses a “dual-plug” system, you need 16 spark plugs for a full tune-up. Choosing the right ones ensures better fuel economy and consistent power.
Key Features to Look For
When shopping for spark plugs, focus on compatibility. The 2015 Hemi requires specific heat ranges and thread lengths. Always check that the plugs are “gapped” correctly for your engine. A proper gap ensures the spark can jump across the electrode consistently. Look for plugs that resist fouling, as this keeps your engine clean and responsive.
Important Materials
Materials determine how long your spark plugs will last.
- Copper: These are standard and inexpensive. They conduct electricity well but wear out quickly.
- Platinum: These last longer than copper. They are a great middle-ground choice for daily drivers.
- Iridium: These are the gold standard. Iridium is extremely hard and durable. It allows for a smaller center electrode, which creates a more focused spark.
Factors That Impact Quality
Quality comes down to how well the plug handles extreme heat and pressure. High-quality plugs use ceramic insulators that prevent electrical leaks. If an insulator cracks, your engine will misfire. Look for brands that use precious metal tips. These tips prevent erosion, meaning your engine stays in top shape for thousands of miles. Cheap, low-quality plugs may fail early and cause rough idling or poor acceleration.
User Experience and Use Cases
If you use your truck for daily commuting, platinum plugs offer great reliability. If you tow heavy trailers or haul loads, iridium plugs are the best choice. They handle the high heat of hard work without breaking down. Most owners notice a smoother idle and better throttle response immediately after installing a fresh set of high-quality plugs.
10 Frequently Asked Questions
Q: How many spark plugs does my 2015 Hemi need?
A: Your 5.7L Hemi engine requires 16 spark plugs total. Each cylinder has two plugs.
Q: How often should I change them?
A: Most manuals suggest a change every 100,000 miles. However, changing them at 60,000 to 80,000 miles keeps the engine running at its peak.
Q: Do I need to gap the plugs myself?
A: Many modern plugs come pre-gapped. Always check the gap with a tool before installation to be safe.
Q: Can I use copper plugs instead of iridium?
A: You can, but you will need to replace them much more often. Iridium is generally recommended for the Hemi.
Q: Will new spark plugs increase my horsepower?
A: New plugs won’t add “extra” power, but they will restore the power you lost to worn-out, inefficient plugs.
Q: Is it hard to change the plugs on a 5.7L Hemi?
A: It is a moderate task. Because there are 16 plugs, it takes time. Some plugs near the back of the engine can be hard to reach.
Q: What happens if I don’t change my spark plugs?
A: You might notice poor fuel economy, engine misfires, or trouble starting your truck.
Q: Should I use anti-seize on the threads?
A: Most manufacturers recommend installing them dry. Check the instructions on your specific spark plug box.
Q: Why are there two plugs per cylinder?
A: The dual-plug design helps the fuel burn more completely and reduces harmful emissions.
Q: Which brand is best for the Ram 1500?
A: Brands like NGK and Mopar are top choices. They meet the strict requirements of your Hemi engine.