If you’re driving an Infiniti G37 and noticing rough idling, poor fuel efficiency, or sluggish acceleration, it might be time to upgrade your spark plugs. The right set of best spark plugs for Infiniti G37 can make a huge difference in engine performance, especially for the 3.7L V6 models. After testing various options, we’ve rounded up the top choices that offer reliable ignition, longevity, and easy installation to keep your ride smooth and responsive.
Quick Product Comparison
Our Top 5 Best Spark Plugs For Infiniti G37 – Expert Tested & Recommended
1. 90174 Iridium Spark Plugs for Infiniti G37 Q50 Q60 QX50 QX70 M37 and Nissan 370Z 3.7L V6 Engines – OEM Replacement Set of 6
✓ Key Features
- ✓ OEM Replacement Fitment: Perfectly compatible with Infiniti G37 2008-2013 3.7L V6, Q50 2014-2015, and Nissan 370Z, ensuring a direct plug-and-play installation without modifications.
- ✓ Iridium Construction: Made from high-quality iridium material that’s resistant to corrosion, waterproof, and lightweight, providing enhanced ignition energy for precise and powerful starts every time.
- ✓ Long-Lasting Durability: High strength and hardness mean these plugs hold up well against wear, ideal for daily driving and offering reliable performance over extended miles.
- ✓ Part Compatibility: Matches OEM numbers like 90174, DF8H-11B, and 1305, so you get factory-level quality without the premium price tag.
🎯 Best For
This set is ideal for Infiniti G37 owners seeking a straightforward OEM-style replacement that boosts engine efficiency and smoothness without breaking the bank. It’s especially great if you’re dealing with misfires or want preventive maintenance for your 3.7L V6.
2. UF617 Ignition Coil Pack with Double Iridium Spark Plugs Set of 6 for Infiniti Q40 Q50 Q60 QX50 QX70 G37 M37 Nissan 370Z 2009-2020
✓ Key Features
- ✓ Complete Kit Inclusion: Comes with UF617 ignition coils and double iridium spark plugs, covering everything needed for a full refresh on your Infiniti G37’s 3.7L V6 system.
- ✓ Premium Materials: Coils feature German-imported copper windings and high-temperature epoxy, while plugs use 360° laser welding for stronger, more concentrated sparks.
- ✓ Broad Compatibility: Fits Infiniti G37 2008-2013, Q50 2014-2015, M37, and Nissan 370Z 2009-2020, making it a versatile choice for multiple models.
- ✓ Enhanced Performance: Delivers faster ignition and improved power output, helping eliminate misfires and boost overall engine responsiveness.
- ✓ Easy Installation: Designed for straightforward replacement, saving you time and hassle during upkeep.
🎯 Best For
This combo pack shines for G37 drivers experiencing ignition issues who want an all-in-one solution for better reliability and performance. It’s perfect if you’re looking to restore that factory-fresh feel without sourcing parts separately.
3. UF617 Ignition Coil and 90174 Iridium Spark Plugs Complete Set of 6 for Nissan 370Z Infiniti G37 Q50 Q60 QX50 QX70 M37 3.7L V6
✓ Key Features
- ✓ Affordable Complete Kit: Includes UF617 coils and 90174 iridium plugs at a budget-friendly price, direct replacement for Infiniti G37 2008-2013 and compatible models like Q50 and 370Z.
- ✓ OEM Spec Matching: Replaces numbers like 22448-EY00A and UF617+90174, ensuring seamless fit and operation without compatibility worries.
- ✓ Easy and Reliable Install: Users report super easy installation that fixes misfires quickly, leading to smooth engine running right away.
- ✓ Proven Durability: High-quality build holds up well for everyday use, providing value without sacrificing performance.
🎯 Best For
This is a top pick for budget-conscious G37 owners facing cylinder misfires or needing a cost-effective tune-up. It’s reliable for those who want quick fixes and long-term savings on maintenance.
4. A-Premium Double Iridium Spark Plugs Pack of 6 for Infiniti Q50 Q60 QX50 QX70 G37 M37 Q70 Q70L FX37 Q40 and Nissan 370Z 3.7L
✓ Key Features
- ✓ Double Iridium Design: Both center and ground electrodes made of iridium for superior longevity and consistent sparking in your Infiniti G37’s 3.7L engine.
- ✓ Precise Specifications: 0.044-inch gap, 5000 ohms resistance, and compatibility with OEM parts like 90174 and DF8H11B for accurate fit.
- ✓ Wide Vehicle Fit: Works seamlessly with G37 2008-2013, Q50, Q60, M37, and Nissan 370Z, covering a range of Infiniti and Nissan V6 models.
- ✓ High-Performance Ignition: Provides reliable starts and efficient combustion, helping improve fuel economy and reduce emissions over time.
🎯 Best For
These plugs are suited for G37 enthusiasts who prioritize durability and precise engineering for daily commutes or spirited drives. They’re a solid choice if you want plugs that last longer than standard copper ones without extra complexity.
5. BDFHYK 90174 Double Iridium Spark Plugs Set of 6 for Infiniti EX37 G37 M37 Q40 Q50 Q60 Q70 Q70L QX50 QX70 Nissan 370Z 3.7L V6
✓ Key Features
- ✓ TS16949 Certified Quality: Manufactured to OE standards with fine iridium electrodes for exceptional durability and performance in Infiniti G37 3.7L V6 engines.
- ✓ Superior Ignition: Faster, more sensitive sparks that increase power and efficiency, pre-gapped for immediate use without adjustments.
- ✓ Extensive Compatibility: Fits G37 2008-2013, EX37, M37, Q50, Q60, Q70, QX50, QX70, and Nissan 370Z, covering a wide array of vehicles.
- ✓ Easy Swap Experience: Users love how they drop in effortlessly, running beautifully and matching OEM quality at a great value.
- ✓ Performance Revival: Helps relive the car’s original power by improving combustion and reducing rough idling.
🎯 Best For
This set is best for G37 drivers wanting affordable iridium plugs that deliver noticeable improvements in smoothness and power. It’s ideal for DIY mechanics who appreciate pre-gapped, hassle-free installs and solid value.
Complete Buying Guide for Best Spark Plugs for Infiniti G37
Essential Factors We Consider
When picking the best spark plugs for Infiniti G37, we look at material quality first—iridium is king for its longevity and heat resistance compared to copper or platinum. Compatibility with the 3.7L V6 is non-negotiable, so we check OEM numbers like 90174. Performance metrics like gap size (around 0.044 inches) and resistance ensure smooth ignition, while user feedback on ease of install and real-world durability helps us spot reliable options. We also weigh if kits include coils for comprehensive fixes.
Budget Planning
For your G37, expect to spend $30-50 for a basic spark plug set, but combo packs with coils can run $80-150, offering better value if you’re tackling multiple issues. Factor in tools if you’re DIY-ing, and remember iridium plugs last 60,000-100,000 miles, saving money long-term over cheaper alternatives that wear out faster. Shop sales on sites like Amazon to stretch your budget without skimping on quality.
Final Thoughts
Upgrading to the right spark plugs can transform your Infiniti G37’s drive from frustrating to fun again. Prioritize iridium for the best balance of performance and lifespan, and always verify fitment for your year and model to avoid headaches.
In wrapping up, choosing from these top best spark plugs for Infiniti G37 means you’ll get back on the road with confidence and pep. I remember swapping mine out after a long commute started feeling sluggish—it was like giving the engine a fresh breath of air. Pick the one that fits your needs, grab it from Amazon today, and enjoy the smoother ride ahead!
Sagor Jahan is the founder and author of Automopromo.com, dedicated to delivering insightful tips, reviews, and updates in the automotive and promotional industry. With a passion for innovation and clear guidance, Sagor helps readers make informed decisions and stay ahead in the ever-evolving automotive world.
