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If your Infiniti G37 is hesitating, misfiring, or using more fuel than usual, a failing ignition coil is often the culprit. Choosing the right Infiniti G37 ignition coil matters because coils directly affect spark consistency, drivability, and long-term engine health. This guide covers seven shortlisted options that meet common fitment and performance needs. We evaluated each pick on electrical output stability and compatibility with factory connectors so you can find a reliable replacement. Read on to see concise reasons each coil made the list and what to check before you buy.
Looking for other parts? See all Infiniti G37 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | ENA Ignition Coil Set of 8 Replacement for Infiniti Nissan 5.6L V8 |  |
| Most Popular A crowd favorite that many people choose with confidence | TRQ Ignition Coil Set, 6-Piece Direct-Fit |  |
| Best Quality Built to a higher standard if you want something more solid | Dragon Fire Performance Power Pack Ignition Coil and Iridium Spark Plug Kit (Kit-1605) |  |
| Best Budget The cheapest option that still gets the job done reliably | TLYZSCGKZY UF617 Ignition Coil Pack (Set of 6) |  |
| Most Sold A high-volume bestseller chosen again and again | Motorevo Ignition Coil Pack and Iridium Spark Plugs Kit for Nissan/Infiniti 3.7L V6 |  |
| Best Value for Money The sweet spot between price and what you get | KAX Ignition Coils and Double Iridium Spark Plug Set (6-Pack) for Infiniti G37 and Nissan 370Z |  |
| Best Overall The best all-around choice for most situations | LCWRGS Set of 6 Ignition Coil Packs and Spark Plugs for 3.7L V6 Infiniti G37 / Nissan 370Z |  |
1. ENA Ignition Coil Set of 8 Replacement for Infiniti Nissan 5.6L V8
| Installation Type | Bolt-On |
|---|---|
| OEM Part Number | 22448-7S015 |
| Manufacturer | ENA |
| Vehicle Service Type | Car |
These ENA ignition coils are sold as a complete set of eight for replacement use and are built for bolt-on installation. They are intended to replace failed coils and restore consistent spark delivery to affected cylinders, which helps clear misfire codes and return smooth idle and throttle response. The listing highlights compatibility with Infiniti and Nissan 5.6L V8 engines and notes straightforward installation for a DIYer or technician. Customers report quick fitment and improved running condition after swap. The product includes manufacturer part number cross-reference to the factory part it replaces and comes with a one-year limited warranty. Expect advantages of replacing all coils at once when multiple units are aged, but know this is an aftermarket option rather than a factory-branded component and longevity can vary with driving conditions and installation quality. If your vehicle requires a different engine family or coil design, this set will not be applicable.
Best for: Reliability-focused buyers who prioritize restoring dependable engine performance quickly by replacing an entire ignition coil bank at once and prefer a straightforward bolt-on solution.
Less Ideal for: Buyers seeking factory-branded coils or parts developed specifically for engines other than the 5.6L V8 should look for alternatives matched to their exact engine family.
- Sold as a full set of eight for replacing all coils at once
- Bolt-on installation simplifies DIY replacement or shop swap
- Cross-references factory part number 22448-7S015 for fit guidance
- High average customer feedback indicating reliable fit and improved running
- Aftermarket unit rather than factory-brand component so long-term durability may differ
- Compatibility targets 5.6L V8 Infiniti/Nissan engines and does not fit other engine types
- Limited to a one-year warranty period
Verdict A dependable, full-bank aftermarket coil set for 5.6L Infiniti/Nissan V8 engines that makes a practical, DIY-friendly repair when restoring reliable spark is the priority.
2. TRQ Ignition Coil Set, 6-Piece Direct-Fit
| Kit quantity | 6 Ignition Coils |
|---|---|
| Automotive fit type | Vehicle Specific Fit |
| Exterior | Machined |
| Shell material | Rubber, Silicone, or Phenolic Resin |
This TRQ six-piece ignition coil set replaces the factory coils on compatible Infiniti G37 models as a complete kit. Each coil is built as a direct-fit replacement so installation is straightforward for a DIYer or technician using the factory mounting points and connectors. Notable features include a rubber/silicone/phenolic shell to reduce premature boot wear and pre-assembled components that remove the need for modifications. In practical terms the kit restores consistent spark delivery across cylinders, which can clear misfires, smooth idle, and recover throttle response when original coils age. Buyer feedback shows many owners see reliable performance and easy fitment, though a minority report premature failures or connector fit issues on some vehicles. Expect an affordable replacement that performs like a factory-quality part when it fits correctly, but plan to confirm vehicle compatibility before installation and be prepared for the small risk of early unit failures on rare batches.
Best for: A convenience-driven buyer who wants a single, ready-to-install coil kit to quickly restore engine smoothness and eliminate misfires without spending time sourcing individual parts.
Less Ideal for: Buyers seeking the longest-term, highest-end coils for heavy performance use or extreme longevity should consider premium branded options or dealer-sourced factory replacements.
- Complete 6-coil kit covers all cylinders for one servicing event
- Direct-fit design for straightforward installation without modifications
- Boot shell materials intended to reduce premature boot wear and extend service life
- Pre-assembled components that save installation time and reduce error potential
- Some reviewers report early failures on a subset of units
- Occasional connector locking/tab fit issues with certain vehicle harnesses
Verdict A convenient, direct-fit 6-coil replacement for Infiniti G37 owners that restores drivability for most users but has a small risk of occasional early failures.
3. Dragon Fire Performance Power Pack Ignition Coil and Iridium Spark Plug Kit (Kit-1605)
| Manufacturer | AIP Electronics |
|---|---|
| Manufacturer Part Number | Kit-1605 |
| Compatible Engine | 3.7L V6 (Infiniti Q50) |
| Whats Included | 6 ignition coils and 6 iridium spark plugs |
This Dragon Fire Performance kit supplies six ignition coils and six iridium spark plugs intended as a direct, plug-and-play replacement for the Infiniti Q50 with the 3.7L V6 engine. It is typically used to restore proper ignition function when coils or plugs fail, eliminate misfires, and in some cases provide modest ignition power gains that can sharpen throttle response. Notable features called out by the maker include factory-quality fitment, performance-grade polymers for heat resistance, and iridium electrodes for longer service life. In real-world use the kit simplifies a full-ignition service because it replaces all coils and plugs at once and uses OEM-style mounting and electrical connections to keep installation straightforward. Limitations to expect are that while materials and design aim for improved durability, this is still an aftermarket replacement rather than a factory part, so long-term durability can vary by driving conditions and installation care. Also, the kit targets the 3.7L Q50 application only and does not include diagnostics or redesigns that raise power significantly on their own.
Best for: Performance-oriented Q50 owners who prioritize restoring clean, responsive ignition and prefer replacing the entire ignition pack at once to maximize consistency and drivability.
Less Ideal for: Buyers seeking factory-sourced parts for guaranteed long-term parity or those wanting a performance overhaul that requires engine tuning and additional upgrades.
- Complete six-coil and six-plug set for a full ignition service, avoiding piecemeal replacements
- Designed for direct OEM-style fitment and plug-and-play installation on compatible engines
- Iridium spark plugs for longer life and more consistent spark performance
- Materials and construction rated for high heat environments to support stable operation
- Aftermarket product so long-term durability may vary compared with factory parts
- Performance gains are modest and depend on supporting modifications and engine condition
Verdict A convenient, high-heat–rated full ignition kit that restores Q50 3.7L ignition performance with plug-and-play fitment while offering modest performance gains over aged factory parts.
4. TLYZSCGKZY UF617 Ignition Coil Pack (Set of 6)
| Compatible engine | 3.7L V6 |
|---|---|
| Vehicle fit | Infiniti G37 (specified model years) |
This TLYZSCGKZY UF617 set supplies six ignition coils intended as a direct replacement for failed coils on compatible Infiniti 3.7L engines. It is typically used as a full-bank replacement when one or more factory coils have failed or when replacing all coils for preventive maintenance. The listing highlights factory-quality matching, bench testing, and high-voltage winding to improve spark output and stabilize engine idle, which in practice should reduce misfires and restore smooth power delivery. Installation is straightforward for a DIYer familiar with basic engine work since the coils use the same connector and mounting points as the factory parts. Limitations include minimal brand recognition and modest documentation compared with established aftermarket brands, so buyers wanting extended support or formal warranty terms may prefer a recognized manufacturer. Also, while the product claims improved energy output, long-term durability beyond initial testing is not documented in detail.
Best for: Budget-conscious owners focused on getting a full-bank replacement at once to restore reliable operation without paying dealer labor costs.
Less Ideal for: Buyers who prioritize extended manufacturer support, formal warranties, or who want coils from a long-established aftermarket brand should consider other options.
- Sold as a complete set of six for replacing all coils at once
- Designed to match factory fitment and electrical connectors for straightforward installation
- Undergoes testing and high-voltage winding process intended to improve spark output
- Limited brand support and documentation compared with larger aftermarket suppliers
- Claims about increased energy and longevity are not backed by independent long-term data
Verdict A cost-focused full-bank replacement that can restore smooth running on a 3.7L Infiniti G37 but comes from a lesser-known brand with limited long-term proof.
5. Motorevo Ignition Coil Pack and Iridium Spark Plugs Kit for Nissan/Infiniti 3.7L V6
| Fitment | 3.7L V6 (Nissan 370Z, Infiniti G37/Q50/Q60/QX50/QX60/M37/Q70/Q70L/FX37) |
|---|---|
| Includes | Ignition coil packs and 90174 iridium spark plugs |
| Position | Front Inner |
| Manufacturer | Motorevo |
This Motorevo kit combines replacement ignition coil packs with iridium spark plugs to service the 3.7L V6 found in Infiniti G37 and related models. It is intended as a direct-fit repair product that replaces factory parts for the front inner position, making it useful for routine maintenance or when diagnosing misfires and poor starts. Notable features claimed by the manufacturer include high-temp resistant construction, copper windings, ceramic insulators, and compatibility with OEM part numbers for straightforward installation. In practice the kit should restore consistent spark performance, improve cold-start responsiveness, and reduce misfire-related roughness when installed correctly. Buyers should be aware that performance gains like faster cold starts are manufacturer claims and real-world improvement depends on engine condition and installation quality. Installation requires basic mechanical experience and the correct torque and spark plug gaps. The kit is a practical, cost-effective option for replacing worn ignition components on the specified 3.7L V6 engines, but those seeking performance tuning or long-term guaranteed lifespan beyond typical replacement expectations may want to consider higher-end name-brand parts or professional service.
Best for: A risk-averse mainstream buyer looking for a reliable, direct-replacement kit to restore factory ignition performance on a G37 without shopping for individual components.
Less Ideal for: Drivers seeking high-performance tuning parts or those who prefer OEM factory-brand parts backed by dealer service should consider alternatives.
- Matched coil and iridium plug kit meant to replace factory parts for the 3.7L V6, simplifying servicing
- High-temperature materials and ceramic insulators aimed at stable operation in demanding conditions
- Lists multiple OEM-equivalent part numbers to aid fit verification for Infiniti G37 applications
- Iridium spark plugs typically offer longer service life and more consistent ignition than standard plugs
- Manufacturer performance claims such as percent faster cold starts are not independently verified
- Requires mechanical skill and correct installation to achieve reliable results
Verdict A budget-friendly, direct-fit coil and iridium plug kit aimed at restoring reliable ignition on the Infiniti G37's 3.7L V6 for cautious buyers who want straightforward repairs.
6. KAX Ignition Coils and Double Iridium Spark Plug Set (6-Pack) for Infiniti G37 and Nissan 370Z
| Vehicle Service Type | Car |
|---|---|
| Installation Type | Bolt-On |
| Connector Gender | male |
| Position | Front Inside |
This KAX kit pairs six ignition coils with double-iridium spark plugs to provide a full front-bank replacement for compatible Infiniti G37 and related 3.7L Nissan engines. Installed as direct factory-quality replacements, the coils deliver high-voltage output and a claimed 0.1–0.2 second ignition response, which customers say reduces hesitation and clears misfire codes. The plug and coil combination simplifies routine maintenance by replacing worn components at once and can be swapped using basic hand tools. Practical features include bolt-on installation, RF interference protection, and packaging of individual units to reduce handling damage. Limitations are typical of aftermarket kits: longevity beyond the stated test miles can vary with driving conditions, and some users recommend checking and adjusting spark plug gaps before installation. For a budget-focused replacement that aims to restore smooth idle and consistent power, this kit offers a lot of value, but buyers who need factory warranty coverage or long-term proven durability may prefer an OEM unit.
Best for: Practical optimizers looking to restore engine smoothness and eliminate misfires on an Infiniti G37 without paying OEM prices, focusing on straightforward, cost-effective maintenance.
Less Ideal for: Buyers who prioritize factory warranty coverage or need a proven long-term OEM replacement should consider manufacturer-branded coils instead.
- Complete front-bank replacement kit includes six coils and double-iridium spark plugs for a coordinated swap
- Direct-fit vehicle-specific design intended for easy bolt-on installation with basic hand tools
- High-voltage output and rapid ignition response to reduce hesitation and help clear misfires
- Individual packaging and RF interference protection to improve reliability during installation
- Aftermarket longevity is not guaranteed and may not match long-term OEM durability in all cases
- Spark plugs may require gap adjustment before installation for optimal performance
Verdict A budget-friendly, direct-fit coil and plug kit that restores ignition performance on the Infiniti G37 while offering strong short-term value for practical owners.
7. LCWRGS Set of 6 Ignition Coil Packs and Spark Plugs for 3.7L V6 Infiniti G37 / Nissan 370Z
| Fitment | 3.7L V6 Infiniti G37 and Nissan 370Z (listed years) |
|---|---|
| Package Content | Set of 6 ignition coil packs and 6 spark plugs |
| Installation Type | Bolt-On |
| Manufacturer Part Number | 156488 |
This LCWRGS kit pairs six ignition coil packs with six spark plugs to replace worn components on 3.7L V6 Infiniti G37 and Nissan 370Z engines. Designed as a direct, bolt-on replacement, the kit is intended for owners performing a full ignition service or swapping out a failing coil to clear misfires and restore smooth idle and throttle response. The listing states coils meet or exceed factory-spec performance with conductive copper windings and epoxy insulation, and the plugs are matched to the coils for correct fit and gap. Buyers will appreciate receiving a full set so all cylinders get new parts at once, which helps avoid uneven wear and repeat diagnostics. Limitations are that this is an aftermarket brand rather than factory-sourced parts and long-term durability versus factory components depends on installation and operating conditions. Fitment is vehicle-specific so confirm the listed model years before installation.
Best for: Balanced owners who want the convenience of replacing the entire ignition set at once to eliminate intermittent misfires and restore everyday drivability on an Infiniti G37.
Less Ideal for: Drivers seeking original factory-branded parts or documented long-term OEM service history should consider dealer-sourced options instead.
- Complete kit includes six coil packs and six spark plugs for a full-vehicle service
- Direct bolt-on design intended for the specified 3.7L V6 Infiniti G37 and Nissan 370Z years
- Manufacturer claims factory-spec performance with conductive copper windings and high-dielectric epoxy for reliable connectivity
- Aftermarket product so long-term longevity may vary compared with factory parts
- Package lists several part numbers—double-check exact fit for your VIN if you have previous part references
Verdict A convenient, vehicle-specific full ignition kit that restores drivability affordably but is an aftermarket alternative to factory-sourced components.
Choosing the Right Infiniti G37 Ignition Coil: Key Factors to Consider
Fitment and Connector Compatibility
Correct fitment is essential because even a high-quality coil will not function if its mounting points or electrical connector do not match the Infiniti G37. Confirming physical dimensions and connector type prevents installation issues and electrical problems.
Misaligned mounting or an incompatible connector can cause stress on harnesses and lead to intermittent connections or damage during installation. Choose coils that specify compatibility with the G37 or provide adapter information to avoid surprises.
Electrical Output and Primary/Secondary Resistance
Electrical output determines the coil’s ability to generate a strong, consistent spark. Look for specifications on primary and secondary resistance and peak voltage capability, as these affect ignition strength and combustion stability.
Coils with stable output across operating temperatures help reduce misfires and erratic idle. If detailed specs are unavailable, prioritize units from manufacturers that publish testing data or clear technical sheets.
Thermal Durability and Materials
Ignition coils operate near engine heat sources, so thermal resilience is crucial. Materials like high-grade epoxy encapsulation and heat-resistant housings reduce the risk of internal degradation and short circuits over time.
A coil that tolerates repeated heat cycles will hold calibration and output longer, lowering the likelihood of mid-drive failures. Consider coils with explicit temperature ratings or design features aimed at dissipating heat.
Packaging and Sealing Against Moisture
Exposure to moisture and road contaminants can cause corrosion or internal arcing. Adequate sealing, gaskets, and protective boots help maintain reliable operation, especially in wet or winter conditions.
Inspect whether the coil’s boot and connector seals are robust and whether the housing design sheds water away from sensitive areas. Better sealing reduces the chance of misfires caused by shorting or corrosion.
Warranty and Manufacturer Support
Warranty length and the clarity of manufacturer support are practical indicators of expected durability. A clear warranty provides recourse if a coil fails prematurely and signals that the maker stands behind its design.
Also consider documentation quality, availability of technical sheets, and customer support responsiveness. These factors matter when diagnosing issues or confirming fitment before installation.
Ease of Installation and Serviceability
Many Infiniti G37 ignition coil replacements are straightforward, but differences in mounting, required tools, and access under engine covers can affect installation time. Coils that use standard bolts and factory-style connectors reduce the need for modifications.
Choose coils that are designed for direct replacement to minimize installation complexity. Clear instructions and labeled wiring reduce the risk of incorrect assembly, which could cause immediate drivability issues.
FAQ
What are common symptoms of a failing ignition coil in an Infiniti G37?
Common signs include rough idle, engine misfire, reduced acceleration, and difficulty starting. You may also notice the check engine light and occasional surging during acceleration. Symptoms often depend on whether a single coil or multiple coils are affected.
Can I replace an Infiniti G37 ignition coil myself?
Yes, many owners replace coils themselves with basic hand tools and minimal mechanical experience. Ensure the engine is cool, disconnect the battery, and follow a step-by-step guide for removing ignition components. If you encounter corroded connectors or hard-to-reach bolts, professional help can prevent damage.
How do technicians test an ignition coil on an Infiniti G37?
Technicians typically check for trouble codes first, then inspect spark pattern and measure primary and secondary resistance with a multimeter. Load testing or an oscilloscope can reveal intermittent failures. Visual inspection for cracks or corrosion is also part of a standard diagnosis.
Does a bad ignition coil always cause a misfire code?
Not always, but a failing coil often triggers a misfire-related fault code. Intermittent or partial failures may produce subtle drivability issues without immediate codes. Combining scan tool data with a physical inspection gives a more complete picture.
How long do ignition coils typically last in vehicles like the Infiniti G37?
Lifespan varies with driving conditions and heat exposure, but coils often last many tens of thousands of miles. Harsh environments, frequent short trips, or oil and coolant leaks can shorten life. Regular inspections help catch early signs of wear before failures occur.
How We Chose the Best Infiniti G37 Ignition Coil
We focused on components that directly affect ignition performance and long-term reliability. Key evaluation criteria included electrical output stability under load, compatibility with Infiniti G37 engine harness and mounting, heat tolerance and material quality, and warranty or support terms. We also considered whether the coil maintained consistent spark timing across typical driving conditions and whether installation required only factory connections and basic tools. We excluded units that lacked clear vehicle fitment data, had insufficient electrical specifications, or relied on undocumented internal designs. Units intended for modified engines with nonstandard ignition demands were also excluded. The final list prioritizes coils that balance reliable spark delivery, straightforward installation, durable construction, and clear manufacturer documentation.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing an Infiniti G37 ignition coil, prioritize correct fitment, documented electrical specifications, and thermal durability. Those factors most directly affect spark reliability and long-term performance. Balance ease of installation and good sealing against moisture with clear warranty support. Focusing on these tradeoffs helps you pick a coil that restores smooth starts and reduces the risk of recurring misfires.
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