Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
Picking the right fuel injector for your Infiniti G37 matters for drivability, engine efficiency, and long-term reliability. A properly matched injector helps ensure even fuel delivery under different driving conditions, reduces rough idling, and supports consistent throttle response. This guide shortlists the top options for the Infiniti G37 and explains the evaluation criteria used to select them, including flow accuracy and spray pattern quality. Below you will find the top picks for this vehicle, with practical notes on why each injector type made the list and what to expect during installation and use.
Looking for other parts? See all Infiniti G37 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Lexleesky Fuel Injectors (6-pack) Compatible with Infiniti G37 / Nissan 370Z / Infiniti Q50 3.7L |  |
| Best Quality Built to a higher standard if you want something more solid | Sethparts Set of 6 Fuel Injectors for VQ37VHR (replaces 16600-EY00A) |  |
| Best Value The sweet spot between price and what you get | ACROPIX Fuel Injector Nozzle Pack of 6 for Infiniti G37 / Nissan 370Z (3.7L) |  |
| Best Budget The cheapest option that still gets the job done reliably | Zxyculture Set of 6 Fuel Injectors for Infiniti G37 / Nissan 370Z 3.7L V6 (16600-EY00A) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Hsingach Fuel Injectors Set of 6 for Infiniti G37 and 3.7L 12-Port (16600EY00A) |  |
| Most Popular A crowd favorite that many people choose with confidence | NECATUO Fuel Injector (Set of 1) Compatible with Infiniti/Nissan 3.7L – Replaces FJ1016 |  |
| Best Seller A high-volume bestseller chosen again and again | A-Premium Set of 6 Fuel Injectors for Infiniti and Nissan 3.7L V6 |  |
1. Lexleesky Fuel Injectors (6-pack) Compatible with Infiniti G37 / Nissan 370Z / Infiniti Q50 3.7L
| Compatible OEM code | 16600EY00A / 16600-EY00A / 16600-ZJ50A / FJ1076 |
|---|---|
| Fitment | Infiniti G37 2008-2013, Nissan 370Z 2009-2020, Infiniti Q50 3.7L 2014-2015 |
| Package quantity | 6 pieces |
These Lexleesky fuel injectors are a direct-replacement style set sold as a six-pack for Infiniti G37, Nissan 370Z, and Infiniti Q50 3.7L engines. They are intended to replace worn or failing injectors and restore proper fuel metering for smoother idle and consistent power delivery. The listing emphasizes OEM compatibility and factory-spec performance, which makes them suitable for routine maintenance or restoration of fuel delivery on cars with aging injectors. Installation follows the standard injector swap procedure under the intake manifold or rail and is best performed with basic mechanical tools and moderate experience. Practical benefits include having all six injectors matched in one kit and straightforward fitment checks using the listed part code. Limitations are the lack of detailed flow or electrical specifications and minimal brand documentation, so users who need exact flow rates or dyno-matched injectors should consider higher-end or calibrated options. Verify the part number and physical appearance against your vehicle before ordering to ensure correct fitment.
Best for: Balanced buyers who want a straightforward, full-bank replacement to restore fuel delivery and drivability on their 3.7L Infiniti or Nissan without seeking performance tuning.
Less Ideal for: Enthusiasts needing flow-matched, high-precision injectors for tuned engines or those who require detailed calibration data should look at performance-grade injector options.
- Sold as a complete six-injector kit for full-bank replacement
- Advertised to meet or exceed factory compatibility for the 3.7L platform
- Simplifies maintenance by matching injector set and part code in one purchase
- No published flow rates or electrical specs for precision tuning
- Limited brand documentation and testing data provided
Verdict: A convenient six-pack of factory-compatible replacement injectors aimed at restoring reliable fuel delivery on 3.7L Infiniti and Nissan engines.
2. Sethparts Set of 6 Fuel Injectors for VQ37VHR (replaces 16600-EY00A)
| Outlet Connection Type | O-ring face seal (ORFS) |
|---|---|
| Thread Size | M12x1.25 |
| Number of Pieces | 6 |
| Material Type | Metal |
| Valve Type | Fuel Injector |
These Sethparts injectors are sold as a complete six-piece set intended to replace factory injectors on Infiniti and Nissan VQ37VHR 3.7L engines. They install like a direct replacement using the same O-ring face seal connection and standard fuel injector thread, making them suitable for full-bank swaps during a tune-up or when addressing misfires and rough idle. The listing highlights metal construction, painted finish, and M12x1.25 thread sizing, and the seller recommends a light coat of dielectric grease on O-rings to ease installation. In practical use the injectors are presented as checked and ready to run with only minimal residual fuel possible after testing. Benefits include restoring consistent spray and helping fuel economy versus worn units, and the set covers all six cylinders for even performance. Limitations are that these are aftermarket replacements so fit and long-term calibration may vary compared with factory units, and buyers should confirm fitment to their specific model year before installation.
Best for: Performance-minded owners looking to restore or maintain consistent fueling on a VQ37VHR 3.7L Infiniti engine as part of a tune-up or performance refresh.
Less Ideal for: Buyers who need a factory-authorized injector or who prefer dealer-sourced parts with documented OEM traceability should consider other options.
- Complete six-injector set covers the entire bank for consistent cylinder performance
- Factory-style O-ring face seal connection for straightforward installation
- Metal construction with painted finish for durability
- Thread size and type match standard fuel injector thread (M12x1.25)
- Aftermarket part so long-term calibration and durability may differ from factory units
- Fitment must be verified for specific model years despite broad compatibility claims
Verdict: A full-bank aftermarket injector set built to match factory connections and thread sizing for VQ37VHR 3.7L Infiniti engines.
3. ACROPIX Fuel Injector Nozzle Pack of 6 for Infiniti G37 / Nissan 370Z (3.7L)
| Fitment | 3.7L VQ37VHR motor (select Infiniti and Nissan models) |
|---|---|
| Set Quantity | 6 pieces |
| Orifice Type | 12 Holes Disc |
| Voltage | DC 12V |
| Material | Metal, Plastic |
These ACROPIX injectors are sold as a pack of six intended to replace failed or leaking injectors on 3.7L VQ37VHR engines such as the Infiniti G37 and Nissan 370Z. They are direct-replacement style parts with a high-impedance coil, 12-hole disc orifice, and factory-like flow rate so installation requires no body modifications, though a professional install and tune are recommended. The kit includes new O-rings meant to reduce fuel vapor leaks and uses metal and plastic construction typical for aftermarket injectors. In practice you can expect restoration of smooth idle and improved fuel delivery compared with clogged or leaking originals, and buyers report straightforward fitment on compatible cars. Limitations are that these are non-OEM aftermarket parts so long-term durability can vary and you may want to verify flow and resistance before installation; an updated tune may be needed to match exact engine calibration. For a budget-conscious repair that restores drivability, this set is a practical option when the vehicle needs all six injectors replaced.
Best for: Practical optimizers seeking a cost-effective, full-service injector replacement to restore drivability on 3.7L Infiniti or Nissan engines without buying factory units.
Less Ideal for: Buyers who need guaranteed factory-lifespan performance or who prefer branded OEM injectors for resale-value or warranty reasons should consider OEM replacements instead.
- Sold as a complete 6-piece kit so all cylinders are refreshed at once
- Direct-replacement fit for 3.7L VQ37VHR applications with matching reported flow
- Includes new O-rings to help prevent fuel leaks
- High-impedance coil and 12-hole disc orifice for consistent spray pattern
- Aftermarket part rather than factory unit so long-term consistency may differ from OEM
- May require professional installation and a tune to ensure exact air/fuel calibration
Verdict: A complete six-pack of direct-replacement injectors that offers a budget-friendly way to restore fuel delivery on 3.7L Infiniti/Nissan engines.
4. Zxyculture Set of 6 Fuel Injectors for Infiniti G37 / Nissan 370Z 3.7L V6 (16600-EY00A)
| Compatible models | Infiniti G37, Nissan 370Z and related 3.7L V6 (see listing) |
|---|---|
| Manufacturer part number | 16600EY00A |
| Set quantity | 6 fuel injectors |
| Exterior | Chrome |
This set of six Zxyculture fuel injectors is an aftermarket replacement intended for Infiniti G37 and other 3.7L V6 Nissan/Infiniti applications such as the 370Z. The kit replaces factory injectors with units that claim a precision spray pattern to maintain combustion consistency and engine responsiveness. They are built with heat-resistant materials to resist fuel additives and higher under-hood temperatures, and use standard connector interfaces to make installation straightforward for a DIY-savvy owner or a technician following the service manual. In practice these injectors are useful when worn injectors cause rough idle, reduced fuel economy, or stumble under load. Expect a practical, budget-friendly repair that can bring drivability back without the cost of dealer parts. Important limitations are typical of economy aftermarket parts: long-term durability and exact flow matching may vary from factory-quality injectors, and professional flow testing or ECU adaptation may be needed for best results.
Best for: Budget-conscious owners focused on restoring drivability and fuel delivery on Infiniti G37 3.7L V6 cars who prioritize an affordable replacement over dealer parts.
Less Ideal for: Owners seeking factory-identical injectors for long-term, high-mileage reliability or those planning high-performance engine modifications should consider higher-end or OEM replacements.
- Sold as a complete set of six for V6 engines so all cylinders are replaced at once
- Designed spray pattern for consistent fuel delivery to improve idle and throttle response
- Heat-resistant construction intended to tolerate fuel additives and elevated engine temperatures
- Aftermarket units may not match factory flow rates exactly which can require calibration or testing
Verdict: A cost-conscious complete set that restores fuel delivery and drivability on Infiniti G37 3.7L V6 cars without the premium of dealer parts.
5. Hsingach Fuel Injectors Set of 6 for Infiniti G37 and 3.7L 12-Port (16600EY00A)
| Material | Metal, Plastic |
|---|---|
| Inlet Connection Type | O-ring |
| Outlet Connection Type | Barb |
| Number of Ports | 12 |
These Hsingach injectors are sold as a set of six and intended to replace the factory injectors on Infiniti G37 and other 3.7L models. They install like a direct replacement and include the same 12-port outlet configuration, O-ring inlet and barb outlet connections, and individual testing before shipment. In practical use the injectors aim to resolve rough idle, misfires, and poor fuel economy caused by worn units; several owners report straightforward installation and quick return to smooth running once the engine management relearns. The packing and spare O-rings make installation cleaner and reduce tear risk when seating tight seals. Limitations to consider are typical for aftermarket injectors: you may see slight fitment friction when inserting O-rings and some vehicles benefit from a tune after replacement to optimize fuel trims. There is no factory warranty detail included in the listing and buyers should be prepared to test or bench-check flow if they need matched flow across all six units.
Best for: A reliability-focused buyer who wants an affordable, full-set replacement to restore consistent fuel delivery and eliminate driveability issues without visiting a dealer.
Less Ideal for: Drivers seeking dealer-backed parts with explicit warranty coverage or those who require brand-new OEM injectors for guaranteed matched performance should consider alternatives.
- Sold as a complete six-pack to replace all cylinders at once
- Packaged with spare O-rings and individual testing reported before shipment
- Direct-fit design for Infiniti G37 3.7L family simplifies installation
- Reports of restored idle quality and improved throttle response after install
- No explicit manufacturer warranty or guarantee information provided
- Aftermarket units can show small manufacturing variance so bench testing or swapping may be needed to confirm matched flow
Verdict: A cost-effective, direct-fit six-pack that restores fuel delivery on Infiniti G37 3.7L models, though buyers should accept typical aftermarket variability and limited warranty detail.
6. NECATUO Fuel Injector (Set of 1) Compatible with Infiniti/Nissan 3.7L – Replaces FJ1016
| Manufacturer | NECATUO |
|---|---|
| Manufacturer Part Number | NEC-PYZ3-1P-FJ1016 |
| OEM Part Number | FJ1016, 16600-EY00A, 842-12368, 800-2052N |
| Vehicle Fitment | Infiniti/Nissan 3.7L V6 models listed |
This NECATUO fuel injector is a single, direct-replacement unit that targets drivers who need to fix erratic idle, poor acceleration or loss of power on Infiniti G37 3.7L engines. It installs like a factory-style injector and is typically used to restore balanced fuel delivery and stable idling without engine modifications. Notable features include corrosion-resistant composite construction and high-temperature Viton O-rings intended to improve durability, plus compatibility with part numbers FJ1016 and 16600-EY00A. In practical use the injector can bring a rough-running engine back to smooth operation and avoid the cost of a full OEM injector when one cylinder is affected. Expectations should be tempered by mixed user reports: many buyers report straightforward fit and improved running, while others encountered leaks or dead units requiring replacement. Because this is sold as individual injectors, labor and careful bench-testing or pressure checks are recommended before installation to confirm proper sealing and spray pattern.
Best for: Convenience-driven owners who want a quick, lower-cost repair to restore normal engine performance without buying full OEM sets or extensive troubleshooting.
Less Ideal for: Owners seeking guaranteed factory-quality reliability or those who prefer to replace all injectors at once should consider factory replacement injectors instead.
- Direct-replacement for listed Infiniti/Nissan 3.7L injector part numbers
- Corrosion-resistant composite body for basic longevity
- High-temp Viton O-rings to resist fuel and heat degradation
- Sold individually so you can replace only the failed injector
- Some buyers reported faulty units that leaked or failed electrically
- Mixed quality consistency across production batches
Verdict: A budget-friendly, direct-fit replacement injector for Infiniti G37 3.7L drivers who need a convenient single-cylinder repair.
7. A-Premium Set of 6 Fuel Injectors for Infiniti and Nissan 3.7L V6
| Compatible Vehicles | Infiniti 3.7L V6 models and Nissan 370Z (listed fitment) |
|---|---|
| Injector Design | Metal and composite plastic |
| Terminals | Blade, male, 2 terminals |
| O-Rings | Preinstalled |
| Static Flow | 175 ml/30s |
This set of six A-Premium fuel injectors is made as direct replacement units for Infiniti 3.7L V6 models and the Nissan 370Z. They install in place of the factory injectors to restore proper fuel delivery and atomization; the listing notes metal and composite construction, preinstalled O-rings, and blade-style terminals to match factory connections. Typical use is a full-rail replacement when worn injectors cause rough idle, reduced economy, or misfires. The manufacturer lists static and dynamic flow figures and promotes nozzle design intended to improve fuel atomization for smoother running and potential fuel-efficiency gains. Practical benefits include matched injector flow across the set and compatibility with the specified Infiniti models, which simplifies diagnosis and repair. Limitations are that these are aftermarket parts so fit and long-term durability can vary versus factory-quality units, and installation may require basic fuel-system experience or a technician. The product comes with a one-year unlimited-mileage guarantee from the brand.
Best for: Risk-averse mainstream buyers seeking a reliable, vehicle-specific replacement to restore normal running and avoid piecemeal repairs; ideal for owners who prefer replacing all injectors at once to maintain consistent engine performance.
Less Ideal for: Drivers looking for high-performance or modified fueling solutions should consider flow-matched performance injectors instead; those who want a lifetime parts longevity guarantee may prefer a factory-quality replacement.
- Sold as a matched 6-piece set to maintain balanced flow across cylinders
- Preinstalled O-rings and blade terminals simplify installation and electrical connection
- Manufacturer lists static and dynamic flow rates so buyers can compare performance
- Metal and composite construction aims to balance durability and cost
- Aftermarket part so long-term durability and exact fit can differ from factory-quality injectors
- Installation may require fuel-system tools or professional service to avoid leaks or drivability issues
Verdict: A cost-conscious replacement set made to restore factory-style fueling for Infiniti 3.7L V6 models, offered with measured flow data and a one-year guarantee.
Choosing the Right Infiniti G37 Fuel Injector: Key Factors to Consider
Flow Rate and Calibration
Flow rate determines how much fuel each injector delivers at a given pressure, so matching injector flow to the Infiniti G37's engine needs is essential for correct air/fuel ratio. Differences in flow can cause lean or rich conditions, which affect performance, fuel economy, and emissions.
Look for injectors with published flow specs and tight tolerances. Calibrated or matched sets reduce the need for ECU adjustments and help maintain balance across cylinders, which improves smoothness and reduces the likelihood of misfires.
Spray Pattern and Atomization
The injector's spray pattern affects how fuel mixes with incoming air and how completely it vaporizes before combustion. Good atomization promotes efficient combustion, smoother idle, and more consistent power delivery across the RPM range.
Choose injectors that specify a spray characteristic suitable for port fuel injection systems and that produce a fine, even mist. Inconsistent spray can create hotspots or uneven cylinder filling, which shows up as rough running or reduced throttle response.
Electrical Compatibility and Response Time
Electrical fit matters because connectors, pin layouts, and impedance must match the Infiniti G37's wiring and ECU control signals. An injector with incorrect impedance or slow response can alter pulse width and result in incorrect fuel delivery timing.
Verify connector type and electrical specifications to avoid adaptation issues. Faster response times improve control at low pulse widths, which helps idle and transient throttle behavior feel crisp and predictable.
Seal Quality and Leak Resistance
O-rings and sealing surfaces prevent fuel leaks and maintain correct rail pressure. Poor seals or mismatched dimensions can allow fuel to seep, create vacuum leaks at the intake, or cause hard starts and drivability problems.
Inspect materials and design of seals for chemical resistance and longevity. Proper seating and a reliable sealing interface reduce the chance of external leaks and interior pressure loss that would compromise injector performance.
Materials, Coatings, and Deposit Resistance
Fuel injectors operate in a harsh chemical environment, so materials and protective coatings influence resistance to corrosion and deposits. Deposits on the pintle or nozzle change flow characteristics and degrade spray pattern over time.
Prioritize injectors made from corrosion-resistant materials or those with coatings that discourage buildup. Better deposit resistance reduces the frequency of cleaning and helps maintain consistent performance and emissions.
Serviceability and Installation Fit
Ease of installation affects total time and cost to replace injectors. Features that matter include correct overall length, mounting flange compatibility, O-ring sizes, and whether adapters are needed. Serviceability also covers whether the injector can be cleaned or serviced without special tools.
Opt for injectors that match the vehicle's physical interfaces to avoid modifications. Consider how simple it is to access and replace the injector in the engine bay, and whether routine maintenance like ultrasonic cleaning is feasible without extensive disassembly.
How We Chose the Best Infiniti G37 Fuel Injector
We focused on factors that directly affect performance and longevity for the Infiniti G37. Core evaluation criteria included flow rate accuracy, spray pattern consistency, electrical connector and mounting compatibility with the vehicle, materials and coating that resist deposits and corrosion, and ease of installation including O-ring fit and sealing reliability. Durability under typical operating temperatures and resistance to clogging were also important, as were warranty coverage and manufacturer quality control processes. We excluded generic or unspecified injectors that lacked clear vehicle fitment information, products that did not provide flow or spray specifications, and items with inconsistent electrical or mechanical interfaces. Our list emphasizes injectors that match the Infiniti G37's fuel delivery requirements and minimize the risk of fitment issues or premature failure.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common symptoms of a failing injector on an Infiniti G37?
Common signs often include rough idle, intermittent misfires, poor acceleration, or reduced fuel economy. You may also notice a strong fuel smell or harder-than-normal starts. Symptoms vary with the type of failure, such as clogging or leaking, so diagnosis often involves checking fuel pressure, injector resistance, and scan tool data.
How can I test if an Infiniti G37 fuel injector is working properly?
Typical checks include measuring injector electrical resistance, using a noid light to confirm pulse from the ECU, and observing fuel delivery under pressure. Specialized flow testing or an oscilloscope trace of the injector waveform gives more detailed information. Many workshops can perform injector flow and spray tests to determine if cleaning or replacement is necessary.
When should I consider fuel injector cleaning versus replacement?
Cleaning is often effective for injectors that are dirty but still structurally sound and electrically functional. If injectors show normal electrical characteristics and only have deposit buildup, professional ultrasonic cleaning can restore performance. Replace injectors if they have internal mechanical damage, persistent leak symptoms, failed electrical tests, or if cleaning does not restore proper flow and spray.
What are leak symptoms to watch for after injector service?
After service, watch for fuel odor, wetness around the injector seals, staining, hard starts, or fluctuating idle. A leaking injector can also cause higher fuel consumption and rough running under load. Address any leaks promptly by checking O-ring seating and seal condition to prevent safety hazards or engine damage.
Will installing different injectors require ECU changes on an Infiniti G37?
It depends on flow rate and electrical characteristics. If replacement injectors match the original flow and impedance, the ECU often does not need recalibration. Significant changes in flow or response may require adjustments to fuel trims or an aftermarket tuning solution. Consult technical documentation or a tuner if you are using injectors with different specifications from the factory units.
Can upgraded injectors improve performance on the Infiniti G37?
Upgraded injectors with higher flow or better spray characteristics can support higher power goals when combined with matching fueling and tuning. They improve fuel delivery capability for engine modifications that increase air intake. Keep in mind upgrades must be matched to engine needs, and tuning is usually required to achieve proper air/fuel ratios and avoid drivability issues.
Conclusion
Choosing the right fuel injector for an Infiniti G37 means balancing accurate flow, consistent spray pattern, and reliable electrical and mechanical fit. Prioritize injectors with documented flow specs, good seal design, and materials or coatings that resist deposits. Weigh tradeoffs between serviceability and long-term durability. If you aim for stronger performance or have modified the engine, focus on flow capacity and confirm whether tuning is needed to match the injector characteristics.
Explore More:
- Check out all Infiniti G37 parts & accessories
- Explore Fuel Injectors Maintenance & Repair Guides
- Explore Fuel System
- Browse all Auto Parts
