Does your Ram 1500 5.7 Hemi feel sluggish when you hit the gas? That legendary engine is known for its raw power, but it relies on a precise ignition system to keep running at its best. If your truck is misfiring, idling roughly, or burning through extra fuel, your spark plugs are likely the culprit. Ignoring these small parts can lead to bigger engine problems and expensive repairs down the road.
Choosing the right spark plug for a Hemi engine is not as simple as grabbing the first box you see on the shelf. With so many brands, materials, and heat ranges available, many truck owners feel overwhelmed. You want the best performance and longevity, but you do not want to waste money on parts that do not fit your specific driving needs. The wrong choice can actually cause performance issues rather than fix them.
In this post, we take the guesswork out of your next tune-up. We will break down the differences between copper, platinum, and iridium plugs to show you which ones perform best in the 5.7 Hemi. You will learn exactly what to look for, how to avoid common installation mistakes, and which brands provide the most reliable spark for your engine. Keep reading to discover how to restore your truck’s horsepower and get it running like new again.
Top Spark Plugs For Ram 1500 5.7 Hemi Recommendations
- 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
- 【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.
- 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.
- [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.
- FITMENT CHECK FIRST - Please confirm your vehicle’s year, make, model, engine, and OE number before purchase. This ignition coil and iridium spark plug kit is designed fit for 2011-2024 Ram 1500 5.7L, 2009-2023 Dodge Charger 5.7L, 2008-2009 Dodge Durango 5.7L, 2011-2024 Dodge Durango 5.7L, 2019-2022 Ram 1500 Classic 5.7L, 2008-2010 Dodge Ram 1500 5.7L, 2008-2023 Jeep Grand Cherokee 5.7L, 2009-2019 Dodge Challenger 5.7L, 2011-2018 Ram 2500 5.7L, and other listed applications
- COMPLETE IGNITION REPLACEMENT KIT - Includes 8 ignition coils and 16 pre-gapped iridium spark plugs for a more convenient ignition system replacement. Replacing both together helps reduce repeated repairs and separate part sourcing. Direct OEM replacement ignition coil and iridium spark plug kit engineered for exact fit by year, make, model, and engine. Recommended spark plug torque: 25-30 N·m (18.44-22.13 ft·lb). Factory pre-lubricated with green dielectric grease for true easy DIY install.
- COMMON IGNITION-RELATED SYMPTOMS - Worn ignition coils or spark plugs may contribute to engine misfire, rough idle, hard starting, hesitation, engine vibration, or check engine light concerns (diagnostic trouble codes including P0300–P0308). This kit may help address these common symptoms when caused by worn ignition components.
- IRIDIUM SPARK PLUGS & DURABLE COILS - Fine-wire iridium spark plugs and epoxy-potted ignition coils are built to support stable ignition and consistent spark delivery. Heat-resistant and vibration-resistant construction helps provide reliable operation for daily driving conditions.
- QUALITY CHECKED & SUPPORT AVAILABLE - Each ignition coil is tested before packaging for consistent performance and dependable operation. Replacement for UF504, C1526, 56029129AA, 56029129AB; 92145, ILZFR5B. Backed by a 2-year warranty and lifetime technical support.
- Genuine NGK Parts
- Economical performance plug for older vehicles
- Advanced V-groove design and high performance Nickel electrode enhances spark development
- Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties
The Ultimate Guide to Choosing Spark Plugs for Your 5.7L Hemi Ram 1500
The 5.7L Hemi engine is the heart of your Ram 1500. It provides great power, but it also demands the right spark plugs to run smoothly. Because this engine uses two spark plugs per cylinder, changing them is a big job. Choosing the right ones the first time saves you time and money. Use this guide to find the perfect fit for your truck.
Key Features to Look For
When you shop for spark plugs, look for these three things:
- Heat Range: The plug must handle the heat of the Hemi engine. A plug that is too hot can damage your motor.
- Thread Size: Always match the exact thread size for your specific model year.
- Pre-Gapped Plugs: Many mechanics prefer plugs that come pre-gapped. This saves you from adjusting the metal tip yourself.
Important Materials
The material inside the plug dictates how long it lasts. You will mostly see these three types:
- Copper: These are cheap and conduct electricity well. However, they wear out very fast. You must replace them often.
- Platinum: These last longer than copper. They resist heat and corrosion better.
- Iridium: This is the best choice for a Hemi. Iridium is very hard and can handle extreme heat. These plugs often last over 100,000 miles.
Factors That Affect Quality
Several things change how well a spark plug performs. First, look for a fine-wire center electrode. This design requires less voltage to create a spark. This helps your engine start faster in the cold. Second, avoid cheap “knock-off” brands. Stick to trusted names like NGK, Mopar, or Bosch. A high-quality plug features a strong ceramic insulator that prevents cracks under high pressure.
User Experience and Use Cases
How you use your truck matters. If you use your Ram 1500 for daily commuting, a standard Iridium plug is perfect. It provides a smooth idle and better gas mileage. If you tow heavy trailers or haul gear, you need a plug that stands up to high engine loads. High-performance Iridium plugs will keep your Hemi from “misfiring” when you pull a heavy load up a hill. Most owners report that a fresh set of Iridium plugs makes the engine feel younger and more responsive.
10 Frequently Asked Questions
Q: How many spark plugs does my 5.7L Hemi use?
A: The 5.7L Hemi engine uses 16 spark plugs. There are two plugs for every cylinder.
Q: How often should I change them?
A: Most manuals suggest changing them every 100,000 miles. However, if you tow often, check them every 60,000 miles.
Q: Can I use copper plugs instead of Iridium?
A: You can, but you will have to replace them every 30,000 miles. It is usually better to spend more on Iridium.
Q: Do I need to gap my plugs?
A: Always check the gap with a tool, even if the box says it is pre-gapped. Ensure it matches your truck’s requirements.
Q: Will new spark plugs improve my gas mileage?
A: Yes. Worn plugs cause the engine to burn fuel poorly. New plugs help the engine run efficiently.
Q: Is it hard to change the plugs myself?
A: It takes patience. Because there are 16 plugs, it can take a few hours. Use the right tools to avoid breaking the ceramic.
Q: Why is my engine misfiring?
A: A misfire is often caused by old, fouled, or broken spark plugs. Check these first if your engine stutters.
Q: Should I put anti-seize on the threads?
A: Follow the manufacturer’s instructions. Many modern plugs come with a special coating and do not need extra anti-seize.
Q: Does the brand of spark plug matter?
A: Yes. Stick to OEM (Original Equipment Manufacturer) brands like Mopar or NGK to ensure the best performance.
Q: How do I know if my plugs are bad?
A: Look for rough idling, poor acceleration, or a “Check Engine” light. These are common signs that your plugs need replacing.