Do you feel a slight hesitation when you step on the gas pedal of your 2016 Ram 1500? That legendary 5.7L Hemi engine is a beast, but it demands peak performance from every single spark plug to keep running strong. Over time, worn-out plugs lead to rough idling, poor fuel economy, and a frustrating loss of power that makes your truck feel sluggish on the road.
Choosing the right replacement can feel like a headache. With so many different brands, materials, and heat ranges on the market, it is easy to get overwhelmed. If you pick the wrong set, you might end up with engine misfires or even damage to your ignition system. You deserve a truck that starts reliably and pulls like it did on day one.
In this guide, we remove the guesswork from your maintenance routine. We will break down the differences between copper, platinum, and iridium options to help you find the perfect match for your Hemi. You will learn exactly which plugs handle the heat best and how to avoid common installation mistakes that cost you time and money.
Stop settling for subpar performance and get your truck back in top shape. Let’s dive into the best spark plug choices for your 2016 Ram 1500 and get you back to driving with full confidence.
Top Spark Plugs For 2016 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.
- MANUFACTURER: Dragon Fire Performance
- UP TO 15% MORE ENERGY - OEM GRADE DURABILITY
- DIRECT FACTORY REPLACEMENT PART - PLUG AND PLAY
- COMPATIBLE WITH 2008-2019 Dodge Jeep Chrysler Ram 5.7 5.9 6.1 6.4 V8 Replaces 56029129AB UF504 LZFR5CI-11 92145 **Be Sure to Check for Correct Fitment Using the Chart Above. Don't See a Chart? Message us for help.
- 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
- [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.
- 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.
The Ultimate Buying Guide for 2016 Ram 1500 5.7L Hemi Spark Plugs
The 2016 Ram 1500 with the 5.7L Hemi engine is a powerful truck. To keep that engine running smoothly, you must choose the right spark plugs. Replacing them on time improves fuel economy and engine performance. This guide helps you pick the best plugs for your truck.
Key Features to Look For
When shopping for spark plugs, focus on the heat range and the gap size. The 5.7L Hemi requires a specific heat range to prevent engine knocking. Always check the manufacturer’s manual for the correct gap size. A pre-gapped plug saves you time and reduces the risk of damaging the electrode during installation. You should also look for plugs designed specifically for the Hemi’s “HEMI-coil” ignition system to ensure a strong spark every time.
Important Materials
Spark plugs use different metals for the center electrode. These materials determine how long the plug lasts.
- Copper: These are affordable and conduct electricity very well. However, they wear out the fastest.
- Platinum: These last longer than copper. They resist heat and corrosion better.
- Iridium: These are the gold standard. Iridium is extremely hard and durable. These plugs provide the longest service life and the most consistent spark.
Factors That Affect Quality
Several factors change how well a spark plug performs. A high-quality plug has a strong ceramic insulator. This prevents electricity from leaking. Look for plugs with a copper core inside the electrode. This helps move heat away from the tip. If you buy cheap, low-quality plugs, you might experience misfires or rough idling. Always buy from reputable brands to ensure the metal quality is high.
User Experience and Use Cases
If you use your truck for daily commuting, standard platinum plugs offer a great balance of cost and performance. If you tow heavy trailers or haul loads often, upgrade to iridium plugs. These withstand the intense heat of heavy-duty work much better. Most Hemi owners notice a smoother idle and better throttle response immediately after installing fresh, high-quality iridium plugs.
Frequently Asked Questions
Q: How many spark plugs does the 5.7L Hemi use?
A: The 5.7L Hemi engine uses 16 spark plugs. There are two plugs per cylinder.
Q: How often should I change my spark plugs?
A: You should change them every 100,000 miles if you use iridium plugs. Check your owner’s manual for specific maintenance schedules.
Q: Can I use copper plugs instead of iridium?
A: You can, but you will need to replace them much sooner. Iridium is recommended for the 5.7L Hemi.
Q: Do I need to gap the plugs myself?
A: Many modern plugs come pre-gapped. Always verify the gap with a tool before you install them.
Q: What happens if I use the wrong spark plugs?
A: Using the wrong plugs can cause engine misfires, poor fuel economy, and potential damage to the engine over time.
Q: Is it hard to change the plugs on a Hemi?
A: It is a moderate task. Accessing the bottom row of plugs can be tricky because of the engine frame.
Q: Should I use anti-seize on the threads?
A: Most manufacturers advise against using anti-seize. The threads often come with a special coating already.
Q: Will new plugs improve my gas mileage?
A: Yes. Worn-out plugs cause incomplete combustion, which wastes fuel. New plugs help the engine burn fuel efficiently.
Q: What are the symptoms of bad spark plugs?
A: Common signs include a rough idle, trouble starting the engine, and a loss of power during acceleration.
Q: Can I replace just a few plugs?
A: No. You should always replace all 16 spark plugs at the same time for consistent performance.