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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 Reviewed 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 | HiSport Fuel Injectors Compatible with Nissan/Infiniti 5.6L V8 (0280158007) – 8 Pack |  |
| Best Quality Built to a higher standard if you want something more solid | ProXlex Fuel Injectors kit (6) compatible with Nissan/Infiniti 3.5L — replacement for 16600-6KA0A |  |
| Best Budget The cheapest option that still gets the job done reliably | AdvanEX Fuel Injectors Set of 6 for 3.5L V6 (Fits Infiniti 3.5L V6 models) |  |
| Most Sold A high-volume bestseller chosen again and again | A-Premium Set of 6 Fuel Injectors for Infiniti and Nissan 3.7L V6 |  |
| Best Value for Money The sweet spot between price and what you get | TINJO 6-Pack Fuel Injectors Compatible with Nissan/Infiniti 3.0L (Replacement Set) |  |
| Best Overall The best all-around choice for most situations | A-Premium Fuel Injector (0280158233) Compatible with 3.6L V6 Vehicles |  |
1. 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.
2. HiSport Fuel Injectors Compatible with Nissan/Infiniti 5.6L V8 (0280158007) – 8 Pack
| Manufacturer Part Number | HSFI58007-8 |
|---|---|
| OEM Part Number | 0280158007 16600-7S000 16600-7S00A |
| Item model number | 0280158007 |
| Exterior | Metal |
These HiSport injectors are sold as an eight-piece pack intended to replace factory-style injectors that carry part number 0280158007. They are metal-and-plastic assemblies with internal seal protection and are offered as tested units from the warehouse. In practice they are used to restore proper fueling when originals leak, clog, or drift out of spec. Buyers report straightforward installation that resolves fuel leaks and rough-running when the injector fitment matches the vehicle. Notable features include a multi-hole spray design and claimed OEM-level testing. Practical benefits are easier cold starts and smoother idling on vehicles that need matched replacements. Limitations: aftermarket flow characteristics can differ from factory injectors so long-term fuel trims may change and some users reported rich-running mixtures or inconsistent results across vehicles. Because this is a bulk pack you may receive more injectors than needed for a single-bank repair and replacement cores or calibrations may still be required for best results.
Best for: Convenience-driven buyers who want a ready-made replacement set to quickly restore fueling without hunting down individual OEM parts and prefer a one-stop repair approach.
Less Ideal for: Those seeking perfect factory-matched flow characteristics or a single-injector replacement to preserve original fuel-trim behavior should consider alternative options or professional calibration.
- Sold as a complete set of eight injectors so all cylinders can be replaced at once
- Internal seal rings and factory-style construction intended to improve durability
- Multiple spray holes for finer fuel atomization and smoother idle
- Tested in the warehouse before shipping to reduce defective units arriving
- Aftermarket flow rates may not match factory injectors causing fuel-trim or drivability differences
- Pack size may be excessive when only one or two injectors need replacement
- Mixed user reports on long-term reliability across different engines
Verdict A convenient eight-pack of aftermarket injectors that can quickly replace worn units but may alter long-term fuel trims compared with factory injectors.
3. ProXlex Fuel Injectors kit (6) compatible with Nissan/Infiniti 3.5L — replacement for 16600-6KA0A
| Material | Metal |
|---|---|
| Inlet Connection Type | O-ring |
| Outlet Connection Type | O-ring |
| Number Of Pieces | 6 |
This ProXlex kit supplies six direct-replacement fuel injectors intended to restore factory fueling on 3.5L V6 engines. Typical use is a complete rail replacement when injectors are worn, leaking, or causing rough idle and poor fuel economy. The injectors use O-ring inlet and outlet seals and a machined metal exterior designed to match factory connections for a straightforward swap. For a performance-oriented buyer the practical benefits are consistent spray patterns across all six cylinders, a full-set purchase that avoids mixing old and new units, and a manufacturer-backed return policy for peace of mind. Limitations to consider are that the listing targets Nissan Pathfinder and Infiniti QX60/JX35 fitment; when applying these to an Infiniti G37 you must confirm exact part number compatibility with the G37's 3.5L variant before installation. Also the kit does not include installation hardware or calibration services, so professional installation and fuel system checks are recommended for optimal results.
Best for: Performance-oriented buyers who prioritize restoring precise, consistent fueling across all cylinders and prefer buying a full matched injector set for track or spirited street use.
Less Ideal for: Buyers who want a drop-in, guaranteed fit for every Infiniti model without cross-checking part numbers or those who prefer injectors with included tuning or calibration services.
- Sold as a matched set of six to avoid cylinder imbalance from mixed-age injectors
- Machined metal bodies and O-ring connections for a factory-style fit
- Replaces specific OEM part numbers for direct interchangeability when matched to vehicle application
- Comes with a one year return/refund policy for buyer protection
- Fitment in the Infiniti G37 is not explicitly listed so buyers must verify part number compatibility before purchase
- No installation hardware or professional calibration included
Verdict A matched six-piece, factory-style replacement injector kit that suits performance-minded owners when part compatibility with the G37 is confirmed before purchase.
4. AdvanEX Fuel Injectors Set of 6 for 3.5L V6 (Fits Infiniti 3.5L V6 models)
| Brand | AdvanEX |
|---|---|
| Inlet Connection Type | Flare |
| Outlet Connection Type | Flare |
| Number of Ports | 1 |
| Manufacturer | Hengxiangparts |
These AdvanEX fuel injectors are a cost-focused replacement set sold as six units to address worn or leaking injectors on 3.5L V6 Infiniti engines. They are designed to atomize fuel into the cylinder and match common interchange numbers used on factory injectors for compatibility with the Infiniti 3.5L family. Typical use is direct swap-in replacement when an injector has failed or for low-cost engine refreshes; the listing notes testing for leakage, spray angle, and nozzle uniformity which aims to ensure consistent spray patterns. Practical benefits include an affordable way to restore idle quality, throttle response, and fuel economy without expensive dealer parts. Limitations are variable quality between units reported by some users and that budget aftermarket injectors can show inconsistent long-term reliability compared with factory-quality parts. Installation requires basic mechanical skills and verification of fitment to the specific G37 year and engine variant before purchase.
Best for: Budget-conscious Infiniti G37 owners who prioritize low upfront cost and need an affordable, immediate replacement to get a 3.5L V6 back to reliable running condition.
Less Ideal for: Those seeking the highest long-term reliability or precise calibrated flow for performance tuning should consider factory-quality or remanufactured injectors instead.
- Sold as a complete set of six to replace all cylinders at once
- Engineered to match common interchange part numbers for direct-fit on 3.5L V6 engines
- Manufacturer reports leak and spray-pattern testing for consistency
- Lower cost alternative to factory or high-end remanufactured injectors
- Some buyers report inconsistent performance with individual units failing
- Aftermarket build quality may not match long-term durability of factory replacements
Verdict A very affordable complete set for restoring a 3.5L Infiniti's fuel delivery, but expect variable unit-to-unit quality compared with factory replacements.
5. 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.
6. TINJO 6-Pack Fuel Injectors Compatible with Nissan/Infiniti 3.0L (Replacement Set)
| Manufacturer | TINJO |
|---|---|
| Item model number | 1660096E01 |
| Manufacturer Part Number | PYZT011 |
| Quantity | 6 pieces |
This TINJO six-piece injector kit is offered as a direct replacement set intended to match factory fit and function for compatible Nissan/Infiniti 3.0L engines. The kit is typically used when restoring fuel delivery after worn or clogged injectors and is installed as a full-bank swap to restore smooth idle, throttle response, and fuel economy. Notable features include preinstalled O-rings, a mix of metal and composite components, and manufacturer claims of OE-spec atomization for improved combustion. In practical use the set should simplify installation because it comes as a matched six-pack and is marketed to reproduce factory spray patterns, which helps reduce misfires and rough running when original injectors age. Limitations to consider are that this is an aftermarket part from a third-party brand rather than a factory unit, so long-term durability and exact OEM matching can vary by vehicle and driving conditions. Buyers should verify exact fitment before purchase and be prepared to replace related seals or harness clips if needed during installation.
Best for: A practical optimizer looking to refresh fuel delivery on their Infiniti G37 without paying OEM premiums and who values a complete matched set for straightforward installation and tuning.
Less Ideal for: Drivers seeking guaranteed factory-authorized components or those who want extended OEM-backed warranties should consider factory-specified replacements instead.
- Sold as a matched set of six for full-bank replacement
- Preinstalled O-rings simplify leak-free installation
- Designed to reproduce factory spray pattern for improved combustion
- Metal and composite construction aimed at corrosion resistance
- Aftermarket brand so long-term reliability may not match factory parts
- Fitment must be confirmed for the specific Infiniti application before purchase
Verdict A budget-focused matched six-pack that makes full-bank injector replacement straightforward, but it is an aftermarket alternative rather than a factory-authorized unit.
7. A-Premium Fuel Injector (0280158233) Compatible with 3.6L V6 Vehicles
| Fuel Type | Gas |
|---|---|
| Hole Quantity | 4 holes |
| Terminal Quantity | 2 |
| Terminal Type | Blade |
This A-Premium fuel injector is a direct-replacement style injector for 3.6L V6 engines and is used to restore consistent fuel delivery and engine smoothness. It installs like a factory-style unit with preinstalled O-rings and a two-terminal blade connector, and the 4-hole nozzle and metal/composite construction aim to match factory spray characteristics. In practice it is suitable for replacing a single failed injector or refreshing multiple injectors to resolve rough idle, misfires, or low power on a G37 with the 3.6L engine. Buyers report easy fitment and improved drivability after installation, and the included O-rings reduce the risk of leaks during service. Limitations to consider are variable long-term durability compared with higher-end branded injectors and occasional reports of premature failures, so some owners replace all injectors or keep a spare on hand. The one-year unlimited-mileage guarantee provides basic coverage, but professional installation and checking connector seating is recommended for reliable results.
Best for: Balanced all-round buyers who want a cost-effective, direct-replacement injector to restore smooth operation on a G37 3.6L without paying for top-tier performance parts.
Less Ideal for: Enthusiasts seeking maximum long-term reliability or track use should consider higher-end branded injectors or OEM factory-quality replacements instead.
- Factory-style fit and connector type for direct swap into 3.6L V6 engines
- Preinstalled O-rings reduce leak risk and speed installation
- 4-hole spray pattern designed to approximate factory fuel atomization
- Metal and composite construction balances cost and performance
- Some users report shorter lifespan compared with premium branded injectors
- Occasional variability in quality control means results can vary between units
Verdict A budget-friendly, factory-style injector that restores smoothness for a G37 3.6L but may not match the longevity of premium branded units.
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.
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.
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.
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.
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