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When your Infiniti G37 radiator is aging or showing signs of trouble, choosing the right replacement affects engine temperature control and long-term durability. You want a unit that restores cooling efficiency, fits correctly, and stands up to road conditions. This guide covers our shortlist of top picks for the Infiniti G37 radiator, selected for their cooling performance, construction quality, and fitment reliability. Below you will find the criteria we used and clear reasons each option made the list.
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 | KAX CU13078 Replacement Radiator for Infiniti EX35/EX37/QX50/QX70/FX35/FX37 |  |
| Most Popular A crowd favorite that many people choose with confidence | DWVO Radiator Compatible with Infiniti QX60/JX35/Pathfinder (CU13348) |  |
| Best Quality Built to a higher standard if you want something more solid | TRQ Dual Radiator & Condenser Fan Assembly (RFA83470) |  |
| Best Budget The cheapest option that still gets the job done reliably | DNA Motoring Aluminum Core Radiator for Infiniti M35/M45 (front) |  |
| Most Sold A high-volume bestseller chosen again and again | Spectra Premium CU2691 Complete Radiator with Transmission Oil Cooler |  |
| Best Value for Money The sweet spot between price and what you get | AUTOSAVER88 Radiator Compatible with Infiniti QX60 / Nissan Pathfinder (2013–2020) |  |
| Best Overall The best all-around choice for most situations | Readair Engine Coolant Radiator Assembly with Transmission Oil Cooler for Infiniti G37/G35/G25/Q40/Q60/370Z |  |
1. KAX CU13078 Replacement Radiator for Infiniti EX35/EX37/QX50/QX70/FX35/FX37
| Compatible vehicles | Infiniti EX35/EX37, FX35/FX37, QX50, QX70 (model years listed) |
|---|---|
| Core material | Aluminum core with plastic tanks |
| Reference number | CU13078, 214601BA0A, 214601BB0A, 214601BB5A, 214601CB0A, 214601UR0A |
| Includes | Transmission oil cooler (no engine oil cooler) |
This KAX CU13078 radiator is a direct-fit replacement designed to restore cooling capacity for compatible Infiniti models. It installs in place of the factory unit and includes a transmission oil cooler provision, which makes it suitable when the transmission cooler is routed through the radiator. The core is aluminum with plastic end tanks and the manufacturer reports leak testing before shipping. Buyers will appreciate the shockproof packaging and that many owners report straightforward fitment with the original mounting points. Common practical issues to watch for are missing transmission cooler fittings and the need to seal or torque fittings carefully to prevent leaks, so expect to source or check fittings during installation. It does not include isolator rubber mounts and may require minor adjustments or additional parts depending on vehicle options. For a reliability-focused replacement that restores cooling and transmission cooling function, this radiator is a practical, budget-conscious option that balances value with factory-style construction.
Best for: Reliability-focused buyers who prioritize restoring OEM-style cooling and transmission cooling on an Infiniti and prefer a straightforward, cost-conscious replacement to extend vehicle service life.
Less Ideal for: Owners seeking a heavy‑duty performance or all-aluminum racing radiator, or those who want a plug-and-play kit that supplies every small mounting fitting and isolator without additional purchases.
- Designed as a direct-replacement fit for compatible Infiniti models so mounting points align with factory locations
- Aluminum core with plastic tanks provides good thermal conductivity and corrosion resistance compared with lower-grade cores
- Includes transmission oil cooler passages so no separate cooler is required when vehicle uses in-radiator transmission cooling
- Leak-proof testing reported by the manufacturer before shipping
- Shockproof packaging reduces risk of shipping damage to the radiator
- Some units have arrived missing transmission cooler fittings requiring additional parts or plumbing work
- Does not include rubber isolator mounts or some small installation hardware
- Plastic end tanks are less durable than full-aluminum radiators over very long service life
Verdict A practical, factory-style replacement radiator for Infiniti models that restores cooling and transmission cooling at a budget-friendly value but may require sourcing minor fittings during installation.
2. DWVO Radiator Compatible with Infiniti QX60/JX35/Pathfinder (CU13348)
| Model | CU13348 |
|---|---|
| Manufacturer Part Number | MADWVZG9sY |
| OEM Part Number | 214603JA0E, NI3010226 |
This DWVO complete radiator replaces a failed factory unit and is intended to restore engine cooling on compatible Infiniti models. It uses a high-density multi-louvered aluminum core with TIG-welded end tanks and treated coating to reduce corrosion, and the package includes the radiator and a user manual; the radiator cap and some sensors are not included. Installation follows a standard radiator swap and generally fits without modification when the correct model is selected, though buyers should plan to reuse some original mounting hardware and sensors. The aluminum core and brass oil cooler connections aim to provide effective heat transfer and durability, but several reports show occasional leaks at plastic seams or oil cooler line fittings, so careful pre-install inspection and correct torque on fittings are advisable. This unit is a practical option for a convenience-minded buyer who wants an off-the-shelf direct replacement to get a G37 back on the road quickly, but expect variable long-term durability compared with higher-end factory-quality units and consider professional installation if you want extra assurance against leaks.
Best for: Convenience-driven buyers who want a ready-to-install replacement to quickly restore cooling on their Infiniti G37 and prefer a straightforward aftermarket option over dealer service delays.
Less Ideal for: If you prioritize maximum long-term durability or frequently tow or track your G37, consider higher-end factory-quality radiators or professional-grade performance cores instead.
- Designed as a direct-fit replacement for compatible models so it installs without modification when correct fitment is chosen
- Aluminum core with multi-louvered fins for improved cooling efficiency under load
- TIG-welded end tanks and corrosion-resistant coating for increased longevity compared with basic aftermarket cores
- Does not include radiator cap or some sensors so additional parts may be needed for a complete swap
- Some users report leaking at plastic seams or oil cooler line fittings, indicating inconsistent quality control
- Plastic inlet/outlet tanks can be less robust than full-metal factory-style radiators over time
Verdict A budget-friendly, direct-fit aftermarket radiator that gets a G37 cooling system working again quickly but may show variable long-term durability compared with premium factory-quality replacements.
3. TRQ Dual Radiator & Condenser Fan Assembly (RFA83470)
| Voltage | 12 Volts |
|---|---|
| Power Connector Type | 2-Pin |
| Wattage | 2.16 watts |
| Fan Quantity | 2 |
This TRQ dual fan assembly replaces the factory radiator and condenser fan pack on Infiniti G37 vehicles and is intended as a direct-fit replacement to restore cooling performance. It ships pre-assembled so installation is mostly bolt-on, which speeds up a DIY repair or a shop swap. The unit uses two fans driven by a 12 volt motor and includes the factory-style 2-pin power connector for plug-and-play electrical hookup. Buyers will appreciate the metal construction and machined exterior that mimic factory fit and keep engine temperatures and A/C condenser airflow within normal ranges. Some owners report excellent fit and long service, while a few have experienced broken plastic supports after extended use, so pay attention to mounting points during install. This is a practical option when your original fan pack fails and you want a high-quality replacement that simplifies installation and restores cooling function on the G37.
Best for: Performance-oriented G37 owners who prioritize restoring or maintaining strong engine and condenser cooling with a high-quality, ready-to-install replacement.
Less Ideal for: Owners who prefer dealer parts with direct dealer-backed warranty support or those seeking an upgraded high-performance aftermarket cooling solution beyond factory-equivalent capacity.
- Direct-fit, pre-assembled dual fan pack for straightforward replacement on the G37.
- Factory-style 2-pin electrical connector for plug-and-play installation.
- Metal construction and machined exterior that match factory appearance and durability.
- Pre-assembled unit reduces install time compared with replacing motors or blades individually.
- A small number of users reported plastic support failures around the motor mounting after months of service.
- Not a vehicle-specific warranty detail available in the listing to immediately confirm long-term coverage.
Verdict A high-quality, pre-assembled direct replacement that gets a G37 back to factory cooling performance with minimal installation hassle.
4. DNA Motoring Aluminum Core Radiator for Infiniti M35/M45 (front)
| Cooler Heatsink Material | Aluminum |
|---|---|
| Mounting Type | Chassis Mount |
| Position | Front |
This DNA Motoring aluminum-core radiator is a direct-fit style replacement meant to restore engine cooling performance on compatible Infiniti models. It uses a two-row tube-and-fin aluminum core and a high-density louvered fin structure to increase surface area and improve heat dissipation, so it will be used where the factory radiator has failed or shows signs of overheating. The unit is chassis-mountable and intended for automatic-transmission applications, and its lightweight construction makes handling and installation easier for a professional installer. Notable practical benefits include higher thermal transfer than many stock radiators and a simple bolt-in fit to factory mounting points. Important limitations are that installation should be performed by someone comfortable with coolant systems because inlet/outlet diameters and exact core dimensions must match the vehicle plumbing, and this part is marketed as a budget replacement so finish and long-term durability may not match higher-end performance radiators.
Best for: Budget-conscious owners seeking an economical replacement radiator to restore reliable cooling and prevent overheating on their Infiniti G37 while prioritizing value over premium longevity.
Less Ideal for: Drivers who want a high-end performance or heavy-duty racing radiator, or those who prefer a lifetime investment part and long-term corrosion resistance should consider higher-tier options.
- Aluminum tube-and-fin core improves heat transfer compared with older or damaged radiators
- Lightweight construction makes handling and installation easier
- High-density louvered fins increase cooling surface area
- Chassis-mount design fits factory mounting points for a straightforward replacement
- Sold as a budget replacement so long-term durability and finish may be lower than premium radiators
- Requires correct inlet/outlet sizing and professional installation to avoid leaks or fitment issues
Verdict A cost-minded, bolt-in aluminum replacement that restores cooling for heat-prone Infiniti G37s but sacrifices some long-term premium durability.
5. Spectra Premium CU2691 Complete Radiator with Transmission Oil Cooler
| Brand | Spectra Premium |
|---|---|
| Model number | CU2691 |
| Compatible vehicles listed | Nissan Armada, Titan, INFINITI QX56 (see fitment) |
The Spectra Premium CU2691 is a full replacement radiator engineered to drop into the factory location and carry the transmission oil cooler and air conditioning mounts without modification. It is used when the original radiator has failed or leaks and you need a direct-fit replacement that restores cooling and AC function. Spectra specifies high-density multi-louvered fins for improved heat transfer and supplies an accessory pack to simplify installation. Buyers report proper alignment of fittings and secure mounting of the transmission cooler and condenser, and many installs run without overheating after replacement. Common limits are packaging and occasional shipping damage to fins or fragile plastic mounting tabs, so inspect the unit before installation and keep spare fasteners handy. This radiator follows factory-fit guidance so it is appropriate for a like-for-like repair but does not offer performance upgrades beyond improved fin density or reinforced mounting features.
Best for: A risk-averse mainstream buyer who wants a dependable, factory-style replacement to return cooling performance to original levels after a failure without chasing performance upgrades.
Less Ideal for: Drivers seeking a high-performance or heavy-duty upgrade for demanding towing or racing use should consider performance-focused radiators instead.
- Complete drop-in replacement that keeps transmission cooler and AC attachments in place
- High-density multi-louvered fins for improved heat transfer compared with basic cores
- Includes accessory pack to simplify installation and reduce need for extra parts
- Engineered to match factory fit, form and function for proper alignment
- Packaging has been reported as insufficient in some shipments leading to fin damage or broken plastic tabs
- Some plastic mounting points can be fragile and may require minor repair or reinforcement
Verdict A practical, factory-fit complete replacement radiator that restores stock cooling function but is not a performance upgrade.
6. AUTOSAVER88 Radiator Compatible with Infiniti QX60 / Nissan Pathfinder (2013–2020)
| Compatibility | 2013–2020 Nissan Pathfinder, 2013 INFINITI JX35, 2014–2020 QX60 |
|---|---|
| Core material | Aluminum core |
| Tanks | High-grade plastic tanks |
| Included | 1x Complete radiator and user manual |
This AUTOSAVER88 radiator is a complete direct-fit replacement intended for late-model Infiniti and Nissan V6 and inline-4 applications. It installs where the factory unit sat and uses an aluminum core with high-density multi-louvered fins plus plastic tanks, which the manufacturer says are leak-tested before shipment. Typical use is a full radiator swap when the original has failed, warped, or developed a leak; the part is built to mate with existing mounting points and hose fittings so you can reuse factory clamps and connections. The practical benefits are straightforward: OEM-style fitment, improved cooling surface area for efficient heat rejection, and a lower cost than dealer-sourced replacements. Important limitations are that the cap is not included and professional installation is recommended; several reviews report excellent durability but a few note early leaks, so careful pre-install inspection and correct mounting are important. Expect solid value if you prioritize a budget-friendly, factory-style replacement and verify fit for your Infiniti G37 application before ordering.
Best for: Practical optimizers looking to restore factory cooling performance on a budget and willing to balance cost savings with the occasional need for attention during installation.
Less Ideal for: Buyers seeking guaranteed dealer-sourced longevity or those who want a turnkey warranty-backed replacement without performing pre-install inspections should consider dealer alternatives.
- Direct-fit design matches factory mounting points for straightforward replacement
- Aluminum core with high-density fins for efficient cooling
- Leak-tested units and plastic tanks designed for longevity
- Lower cost compared with dealer or OE-sourced radiators
- Radiator cap is not included
- Some user reports of premature leaks on isolated units
Verdict A budget-friendly, factory-style replacement radiator that delivers strong cooling performance for buyers who want good value but should check for fit and inspect for leaks before final installation.
7. Readair Engine Coolant Radiator Assembly with Transmission Oil Cooler for Infiniti G37/G35/G25/Q40/Q60/370Z
| Brand | Readair |
|---|---|
| Manufacturer Part Number | Radiator21460JK90B |
| OEM Part Number | 13004, NI3010227, 21460JK90B |
| Compatible Models | Infiniti G37/G35/G25/Q40/Q60 and Nissan 370Z (specified years) |
This Readair radiator is a complete direct-fit replacement for Infiniti G37 and related models, combining an aluminum core with a brass transmission oil cooler and plastic inlet/outlet tanks. It is typically used to replace a failed factory radiator and restore cooling and transmission oil cooling without modification. Notable features include a high-density multi-louvered fin core for improved heat dissipation, TIG-welded construction, and factory-style mounting points for straightforward installation. The practical benefits are return-to-factory fit, a built-in transmission cooler so you do not need a separate unit, and corrosion-resistant coatings meant to extend service life. Some buyers report excellent fit and easy installation while others have experienced quality-control issues such as cracked tanks or early leaks, so inspection before installation and careful handling are advisable. This unit aims to match factory performance at a lower cost, but occasional variability in build quality means buyers should be prepared to address warranty or return steps if problems appear.
Best for: Balanced buyers who want a factory-style replacement that restores cooling and transmission oil cooling without paying OEM prices and who prioritize fit and overall value.
Less Ideal for: People who require guaranteed long-term durability from a premium brand or who prefer to avoid any risk of variable aftermarket quality should consider higher-end or dealer-sourced radiators.
- Direct-fit design for Infiniti G37 and specified models reduces installation time and need for modifications
- Aluminum core with multi-louvered fins improves cooling efficiency compared with plain cores
- Integrated brass transmission oil cooler eliminates the need for a separate cooler installation
- TIG-welded construction and treated coating aim to improve durability and corrosion resistance
- Some customers reported leaking or cracked plastic tanks indicating occasional quality-control failures
- Build quality appears variable across units which may require returns or warranty service in isolated cases
Verdict A cost-effective, direct-fit radiator with an integrated transmission cooler that delivers factory-style functionality for Infiniti G37 owners but with some variability in build quality.
Choosing the Right Infiniti G37 Radiator: Key Factors to Consider
Cooling Capacity
Cooling capacity determines how effectively a radiator moves heat away from the engine under normal and heavy loads. Higher-capacity cores and larger surface area typically improve heat dissipation, which helps prevent overheating during highway driving, towing, or spirited uses.
When evaluating cooling capacity, consider the core thickness, number of rows, and fin density. Those specifications influence airflow resistance and heat transfer. A radiator that matches or exceeds the original cooling performance reduces temperature swings and can extend engine life.
Material and Construction
The materials used in the core, tanks, and end plates affect durability and corrosion resistance. Aluminum cores with reinforced tanks tend to be lightweight and resist rust, while brass or copper constructions offer different repairability options. Quality welds and brazing are also important for long-term leak resistance.
Look for consistent machining and robust header connections. Inferior construction can lead to premature leaks or failure under pressure cycles, while well-built radiators maintain sealing under thermal expansion and road vibration.
Fitment and Compatibility
Correct fitment ensures the radiator lines up with mounting points, fan shroud, and hose connections without modification. A radiator designed specifically for the Infiniti G37 will match inlet and outlet positions, mounting hole spacing, and transmission cooler integration if applicable.
Poor fitment can lead to installation delays, additional modification costs, or compromised hose routing that produces stress and leaks. Confirming fitment saves time and helps preserve OEM alignment of cooling components.
Cooling System Integration
A replacement radiator must work with the rest of the cooling system, including hoses, thermostat, fan assemblies, and any transmission cooler. Compatibility with the existing fan shroud and electrical fan connectors affects cooling efficiency and installation complexity.
Consider whether the radiator includes fittings for an integrated transmission cooler or requires separate plumbing. Proper integration supports consistent operating temperature and avoids introducing flow restrictions or air pockets.
Ease of Installation
Installation complexity affects total downtime and whether you can complete the job at home or need professional help. Radiators that use stock mounting points and require minimal hose changes reduce labor and lower the chance of installation errors.
Check whether the radiator comes with necessary mounting hardware, seals, or fittings. Clear documentation and a design that matches factory connections usually result in a straightforward install and fewer post-installation issues.
Warranty and Support
Warranty coverage signals manufacturer confidence and can protect against early failures or manufacturing defects. Look for clear terms on parts coverage and the duration of the warranty, as well as the process for making claims.
After-sales support such as availability of replacement parts and technical guidance helps if you encounter fitment questions or need to replace a component. Strong support reduces the risk associated with a major cooling system component replacement.
FAQ
What are common radiator symptoms leaking overheating in an Infiniti G37?
Typical signs include visible coolant puddles under the car, a sweet smell inside or outside the cabin, or a rising temperature gauge. You may also see steam from the engine bay or notice low coolant levels without an obvious external leak. Addressing these symptoms early helps prevent engine damage.
Can I perform a radiator replacement on an Infiniti G37 myself?
Many owners with intermediate mechanical skills can replace the radiator, provided they have basic tools and follow a proper procedure. Key steps include draining coolant, disconnecting hoses and electrical connectors, and ensuring correct refilling and bleeding of the cooling system. If you are unsure about steps like removing the fan assembly or bleeding air, professional help is advisable.
How do I know if the radiator fits my Infiniti G37?
Confirm fitment by matching the radiator's stated application to the Infiniti G37 and checking inlet/outlet locations, mounting hole spacing, and any transmission cooler fittings. Product documentation or a fitment chart that lists the G37 explicitly is the most reliable indicator. Avoid units that require custom hoses unless you are prepared for modifications.
When should I consider a coolant flush when replacing the radiator?
A coolant flush is usually recommended when installing a new radiator to remove old contaminants, rust, and sludge that could reduce performance. Flushing helps ensure the new radiator receives fresh coolant and reduces the risk of premature clogging. It is especially important if the old coolant was degraded or contaminated.
What factors affect radiator repair cost versus replacement?
Repair costs depend on the type and location of the damage. Small leaks at fittings or in end tanks may be repairable, while core damage or extensive corrosion often warrants replacement. Labor complexity, parts availability, and the need for additional components like hoses or an updated thermostat also influence the total cost.
Should I choose OEM vs aftermarket radiator for an Infiniti G37?
OEM units usually match original specifications and fitment exactly, while aftermarket radiators can offer different materials or improved cooling characteristics. The best choice depends on your priorities for fit, performance, and warranty. Selecting a reputable aftermarket supplier that documents G37 compatibility helps reduce risk.
How We Chose the Best Infiniti G37 Radiator
To assemble this list of Infiniti G37 radiator options we focused on measures that directly affect vehicle performance and ownership experience. Primary evaluation criteria included cooling capacity under typical driving loads, material and core construction for durability and corrosion resistance, and exact fitment to the G37 mounting points and hose connections. We also considered ease of installation and whether the unit supports factory-style inlet and outlet diameters. Additional filters covered manufacturing tolerances, warranty support, and the availability of replacement parts such as mounting brackets and fittings. Units that required extensive modification or nonstandard hoses were excluded. We did not include products that lacked clear specifications or documentation on compatibility with the Infiniti G37. The resulting shortlist favors radiators that balance reliable temperature control, straightforward installation, and robust construction.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right Infiniti G37 radiator comes down to balancing cooling capacity, build quality, and exact fitment. Prioritize units that restore or exceed original cooling performance, use durable materials, and align with factory mounting and hose locations. Consider installation ease and warranty terms as part of the decision. By focusing on these factors you can minimize downtime, reduce the chance of leaks, and maintain consistent engine temperatures for reliable operation.
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