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A properly functioning cooling system is essential to keep your Infiniti Q50 running reliably and avoid engine damage from overheating. Choosing the right radiator affects cooling efficiency, durability, and how often you need maintenance.This guide covers seven shortlisted radiators chosen for compatibility and performance with the Infiniti Q50. We evaluated each option for construction quality, core design, and cooling performance to help you find the right replacement. Read on to see the factors we used and what matters most when selecting a radiator.
Looking for other parts? See all Infiniti Q50 parts & accessories.
Top Picks at a Glance
| Best overall The best all-around choice for most situations | TRQ Radiator Assembly Aluminum Core 1-Row Compatible with Infiniti Q50 3.0L |  |
| Best Value The sweet spot between price and what you get | AUTOSAVER88 Radiator for 2014–2018 Infiniti Q50 V6 3.5L/3.7L |  |
| Best Budget The cheapest option that still gets the job done reliably | RAYTEN Radiator for Infiniti Q50/Q60 3.0L (Replacement CU13645) |  |
| Highest Rated A top-rated pick with lots of positive feedback | KAX CU13440 Engine Cooling Radiator for Infiniti Q50 (Main Radiator) |  |
| Most Popular A crowd favorite that many people choose with confidence | TRQ Radiator, 1-Row Aluminum Core for 2014-2015 Infiniti Q50 3.7L |  |
| Best Seller A high-volume bestseller chosen again and again | A-Premium Engine Coolant Radiator Assembly with Transmission Oil Cooler for Infiniti Q50 (2014–2018) |  |
1. TRQ Radiator Assembly Aluminum Core 1-Row Compatible with Infiniti Q50 3.0L
| Core Row Quantity | 1 |
|---|---|
| Core Material | Aluminum |
| Transmission Oil Cooler Type | Concentric |
| Fitment | Infiniti Q50 2016-2022 V6 3.0L with standard cooling |
This TRQ radiator is a direct-fit replacement for Infiniti Q50 V6 3.0L models with standard cooling and installs the same way a factory unit would. It uses a single-row aluminum core and includes a built-in concentric transmission oil cooler, so it handles both engine cooling and transmission cooling duties without separate components. Typical use is a like-for-like swap when the factory radiator leaks or fails; preassembled mounting points and standard inlet/outlet locations mean most technicians or competent DIYers can complete the job with basic tools and the step-by-step videos TRQ provides. The practical benefits are straightforward: predictable fitment to the specified Q50 years, lightweight aluminum core for good heat transfer, and built-in transmission cooling to simplify replacement. Limitations to consider are the single-row core thickness, which offers less cooling capacity than multi-row performance radiators, and the plastic tanks that are common at this price point and can be more vulnerable to impact or long-term heat cycling than all-metal designs.
Best for: Balanced owners who want a reliable, factory-style replacement for routine repairs on an Infiniti Q50 and prefer a product that balances cost, ease of installation, and dependable cooling.
Less Ideal for: Drivers who need extra cooling for track use, heavy towing, or aggressive performance modifications should consider a multi-row or heavy-duty radiator instead.
- Direct-fit design for 2016–2022 Infiniti Q50 V6 3.0L with standard cooling reducing installation time
- Single-row aluminum core provides efficient heat transfer for typical street driving
- Integrated concentric transmission oil cooler removes the need for a separate cooler
- Preassembled mounting points and manufacturer installation videos simplify DIY replacement
- Single-row core offers less cooling margin than multi-row or high-performance radiators
- Plastic end tanks are less durable under heavy-duty use or repeated heat cycling
Verdict: A practical, direct-fit aluminum radiator for Q50 owners who want a cost-effective factory-style replacement rather than a high-capacity performance unit.
2. AUTOSAVER88 Radiator for 2014–2018 Infiniti Q50 V6 3.5L/3.7L
| Compatibility | 2014–2018 Infiniti Q50 V6 3.5L/3.7L |
|---|---|
| Core material | Aluminum core |
| Tank material | PA66 GF30 plastic |
| OEM part numbers | 214104GA5A, 214604GB5A, 214604GZ5A, IN3010209 |
This AUTOSAVER88 radiator is a complete direct-fit replacement for 2014–2018 Infiniti Q50 V6 3.5L and 3.7L engines. It installs in place of the factory unit and is built with an aluminum core, integrated oil cooler, and high-density multi-louvered fins to improve heat transfer and help the engine reach and maintain safe temperatures. The tanks use PA66 GF30 plastic and the assembly is leak-tested at the factory, which aims to deliver service life comparable to a factory-quality part. Typical use is a vehicle-level repair when the original radiator is leaking, clogged, or underperforming; professional installation is recommended since the radiator cap is not included. Customer feedback shows many clean fits and reliable cooling, though a small number report early leaks, so careful post-install inspection is wise. For a buyer focused on value this radiator offers OEM-style fitment and enhanced cooling features at a fraction of dealer cost, with the caveat that material durability can vary between units.
Best for: Practical optimizers seeking a lower-cost, factory-style replacement that restores cooling performance without paying dealer prices or overbuying premium upgrades.
Less Ideal for: Buyers who want a lifetime performance guarantee or those unwilling to inspect and verify parts after installation should consider higher-end or dealer-supplied options.
- Direct-fit design for 2014–2018 Infiniti Q50 V6 for easier installation
- Aluminum core with multi-louvered fins and built-in oil cooler improves cooling efficiency
- PA66 GF30 plastic tanks and factory leak testing designed to reduce early failures
- Includes complete radiator assembly so you replace the whole unit rather than repairing components
- Radiator cap not included so additional purchase or reuse of the original cap is necessary
- Some reviewers reported occasional early leaks indicating variability in long-term durability
Verdict: A cost-conscious, direct-fit radiator that restores factory cooling performance for Infiniti Q50 V6s while delivering good value with some variability in long-term durability.
3. RAYTEN Radiator for Infiniti Q50/Q60 3.0L (Replacement CU13645)
| Vehicle fitment | Infiniti Q50/Q60 3.0L (2016–2021) |
|---|---|
| Core material | Aluminum core |
| Manufacturer | Rayten |
| Manufacturer part number | Ray-radiator-13645 |
This RAYTEN radiator replaces the factory unit for Infiniti Q50 and Q60 3.0L engines and is intended as a cost-conscious aftermarket replacement. It installs like a conventional radiator using the same mounting points and coolant connections, so most installs require no major modifications though professional installation is recommended. The radiator pairs an aluminum core with sealed tanks intended to resist corrosion and handle normal thermal cycling, which helps maintain cooling under everyday driving and light performance use. Buyers report straightforward fitment when the vehicle is correctly matched, but the part does not include installation hardware or a radiator cap, so you may need to reuse factory pieces or source a cap separately. Quality control appears mixed across units: many customers note clean fit and no leaks while a few experienced leaks or needed minor trimming of sharp edges. For budget-focused repairs or replacement where OEM pricing is prohibitive, this radiator provides a practical, generally reliable option if you confirm exact vehicle fitment before buying.
Best for: Budget-conscious Infiniti Q50/Q60 owners who need an affordable, functional replacement radiator and prioritize keeping repair costs low while restoring cooling function.
Less Ideal for: Buyers seeking an exact factory part, highest-end durability for heavy towing or track use, or a drop-in kit that includes all hardware and caps should consider higher-end or OEM replacements instead.
- Designed to match factory mounting points for direct replacement on specified Infiniti Q50/Q60 3.0L models
- Aluminum core with sealed tanks for corrosion resistance and thermal durability
- Many buyers report easy installation and leak-free operation
- Lower-cost alternative to factory radiators for budget repairs
- Does not include installation hardware or a radiator cap
- Some units arrived with sharp raw edges that required light finishing and a small number of users reported leaks
Verdict: A wallet-friendly, aluminum-core replacement radiator that restores cooling performance for 3.0L Infiniti Q50/Q60 models without the OEM price.
4. KAX CU13440 Engine Cooling Radiator for Infiniti Q50 (Main Radiator)
| Compatible vehicles | 2014-2015 Q50 3.7L; 2014-2018 Q50 3.5L |
|---|---|
| Core flow type | Down Flow |
| Transmission oil cooler | Yes |
| OEM part numbers replaced | 2219458, 13440C, 4113440, CU13440 |
This KAX CU13440 radiator is a direct-fit replacement intended for Infiniti Q50 3.5L and 3.7L models and is used to restore the vehicle's engine cooling system after a leak or failure. It replaces multiple factory part numbers and includes a TIG-welded aluminum core with multi-louvered fins and PA66 GF30 plastic tanks to improve heat dissipation and resist corrosion. The unit supports the transmission oil cooler lines and is packaged with reinforced shockproof materials to reduce transit damage. In practice the radiator installs like a factory-style item and reviewers report good fitment and reliable cooling once installed, though some buyers needed fittings or extra sealing on the transmission cooler connections. The manufacturer states leak and durability testing to IATF16949 standards and offers two-year quality support, which suits owners who prioritize reliability. Buyers should plan professional installation and verify that any cooler line fittings or isolator mounts are available, since those small parts are not always included.
Best for: Reliability-focused Infiniti Q50 owners who want a factory-quality replacement to restore consistent cooling and avoid repeat repairs.
Less Ideal for: Drivers seeking a budget quick-fix or a DIY project who do not want to source additional fittings or pay for professional installation should consider simpler or complete kits with included hardware.
- Direct-fit replacement for Infiniti Q50 3.5L and 3.7L models to simplify installation
- Aluminum core with multi-louvered fins for improved heat dissipation and corrosion resistance
- Includes transmission oil cooler passages so no separate cooler is required
- Reinforced packaging reduces risk of transport damage and arrives in good condition
- Manufacturer reports leak and durability testing and offers two-year support
- Some units may not include transmission cooler fittings or rubber isolator mounts requiring additional parts or prep
- Installation is recommended for professionals which adds labor cost
Verdict: A reliable, factory-style radiator replacement for Infiniti Q50 owners who prioritize long-term cooling performance, provided you confirm fittings and plan professional installation.
5. TRQ Radiator, 1-Row Aluminum Core for 2014-2015 Infiniti Q50 3.7L
| Core Row Quantity | 1 |
|---|---|
| Core Thickness | 1.02 in |
| Core Material | Aluminum |
| Inlet Diameter | 1.38 in |
| Outlet Diameter | 1.42 in |
This TRQ radiator is a direct-fit replacement for the 2014–2015 Infiniti Q50 3.7L that swaps in without modification. It uses a single-row aluminum core with a plastic tank assembly and includes the transmission oil cooler, matching the factory layout with top-right inlet and bottom-left outlet locations. Typical use is a full radiator replacement during a cooling system repair; expect the part to bolt in and accept existing mounting points and hoses when the vehicle is correctly prepped. Notable features are the full aluminum core for heat transfer, pre-assembled mounting points to simplify installation, and TRQ's DIY installation resources including videos. Practical benefits include straightforward drop-in fitment for most owners, solid thermal performance from the 1.02 inch core thickness, and reduced install time versus repairing a damaged factory unit. Limitations to be aware of are the plastic tanks which are common on aftermarket units and occasional fitment differences reported by some users with fan panels or mounting clips, so confirm alignment before final installation.
Best for: Convenience-driven buyers who want a ready-to-install, vehicle-specific replacement that minimizes shop time and tool complexity and lets them complete a radiator swap quickly.
Less Ideal for: Buyers seeking a heavy-duty or performance-focused all-metal radiator for high-boost or extreme-duty use should consider purpose-built performance units instead.
- Direct-fit design intended to match factory mounting locations for simpler installation
- Aluminum core for efficient heat transfer and consistent cooling performance
- Includes transmission oil cooler to maintain factory function without extra parts
- Pre-assembled components and available installation videos speed up a DIY swap
- Plastic end tanks rather than full-metal construction may be less durable long term
- Some buyers report small fitment gaps with fan panels or clip alignment requiring minor adjustments
Verdict: A convenient, direct-fit aluminum-core radiator that makes replacing the 2014–2015 Infiniti Q50 3.7L cooling assembly quick and straightforward.
6. A-Premium Engine Coolant Radiator Assembly with Transmission Oil Cooler for Infiniti Q50 (2014–2018)
| Vehicle Fitment | Infiniti Q50 2014-2018 V6 3.5L/3.7L |
|---|---|
| Transmission Oil Cooler | Included |
| Engine Oil Cooler | Not included |
| Manufacturer Part Number | APRAD172 |
This A-Premium radiator is a direct-fit replacement designed for Infiniti Q50 2014–2018 V6 engines and includes an integrated transmission oil cooler. It installs the same way as a factory unit and is typically used to replace a leaking or failed radiator to recover normal engine and transmission temperatures. Notable features include the included transmission oil cooler, pressure-tested construction according to the listing, and packaging that reviewers call protective. In real-world use it delivers OEM-style fitment and restores cooling quickly, making it suitable for routine radiator swaps and return-to-service repairs. Limitations to consider are that some buyers report the fins are easier to bend than factory parts and long-term durability varies across reviews, so careful handling during installation and periodic inspections are advisable.
Best for: Risk-averse mainstream buyers who want a reliable, direct-fit radiator replacement for routine repairs and prefer restoring factory cooling function without modification.
Less Ideal for: Buyers seeking heavy-duty or performance cooling upgrades or those who need the highest long-term durability for extreme use should consider purpose-built aftermarket options.
- Direct-fit design for Infiniti Q50 2014–2018 V6 for straightforward installation
- Includes transmission oil cooler, removing the need to buy a separate cooler
- Pressure-tested before shipping according to listing details
- Many buyers report solid fitment and protective packaging on arrival
- Metal cooling fins are reported as easier to bend than factory radiators
- Mixed long-term durability in user reviews with some units failing earlier than expected
Verdict: A direct-fit, budget-friendly radiator assembly for Infiniti Q50 owners that includes a transmission oil cooler to quickly restore factory cooling function.
Choosing the Right Infiniti Q50 Radiator: Key Factors to Consider
Cooling Capacity and Core Design
Cooling capacity determines how effectively a radiator transfers engine heat to the air. A larger or more efficient core with more fins per inch increases heat dissipation, which matters if you tow, drive in hot climates, or push the engine hard.
Core thickness and tube count affect both cooling and airflow resistance. Thicker cores often cool better but may require more airflow or impact fan performance, so match core design to your driving conditions and the vehicle's stock fan setup.
Material and Build Quality
Radiators are commonly made from aluminum, copper-brass, or a mix of materials, and construction quality affects durability and heat transfer. Corrosion-resistant materials and robust welds or brazing help prevent leaks and extend service life under road salt, moisture, and vibration.
Look for solid tanks, reinforced mounting points, and quality seals. Better materials and assembly reduce the likelihood of premature failure and can lower long-term maintenance needs.
Fitment and Hose Placement
Accurate fitment to the Infiniti Q50 is crucial to avoid installation headaches. Inlet and outlet locations, mounting brackets, and transmission cooler ports must align with the vehicle's hoses and mounts to ensure a proper, leak-free installation.
Incorrect hose placement can necessitate adapter hoses or modifications, adding complexity and potential failure points. Confirm the radiator's exact fitment details against your car's model year and engine variant.
Compatibility with Transmission Cooling
Many radiators incorporate transmission cooler passages or ports. If your Infiniti Q50 has an automatic transmission, verify whether the radiator includes compatible transmission cooler connections and the correct port locations.
A radiator without integrated transmission cooling will require a separate cooler, while one with ports must match the line fittings. Proper transmission cooling integration helps maintain transmission temperature under load.
Ease of Installation and Maintenance
Installation complexity influences how much time and labor are required. Radiators that reuse factory mounting points, have predrilled brackets, and match hose fittings simplify installation and reduce the chance of leaks.
Maintenance access for coolant drains, petcock valves, and ease of flushing also matters. Consider whether the design allows straightforward radiator coolant flush procedures and replacement without extensive disassembly.
Warranty and Support
Warranty terms and manufacturer support provide protection against early failures. A clear, reasonable warranty indicates confidence in materials and construction and can reduce ownership risk.
Also consider the availability of replacement parts or support documentation. Good customer service and accessible technical guidance can help resolve fitment or installation questions quickly.
How We Chose the Best Infiniti Q50 Radiator
Our selection focused on radiators that fit the Infiniti Q50 and deliver reliable thermal management under typical driving conditions. We prioritized material and construction quality, core design and cooling capacity, inlet/outlet placement and hose compatibility, and ease of installation including mounting points. Durability factors such as resistance to corrosion and vibration were considered, along with warranty coverage and manufacturer support.We excluded units that lack clear compatibility documentation or that require significant modifications to fit the vehicle. We also filtered out radiators with unverified performance claims or poor customer support histories. The final list balances real-world fitment, measured cooling characteristics, and long-term durability to reflect what matters most for Infiniti Q50 owners.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know if my Infiniti Q50 radiator is failing?
Common signs include recurring overheating, visible coolant leaks, discolored or low coolant level, and steam from the engine bay. You may also notice reduced heater performance in cold weather.These symptoms often indicate coolant loss or restricted flow, but they can also stem from other cooling system components. Inspect hoses, clamps, and coolant level first and consider professional diagnosis if symptoms persist.
Can I replace the radiator myself on an Infiniti Q50?
Many owners can perform a radiator replacement with moderate mechanical skills and basic tools. Tasks include draining coolant, disconnecting hoses and lines, removing mounting hardware, and refilling and bleeding the cooling system.However, automatic transmission lines, tight engine bay clearance, or complex fan assemblies can complicate the job. If you are unsure, seeking professional installation helps avoid leaks and cooling issues.
Should I choose OEM or aftermarket radiators for an Infiniti Q50?
OEM radiators match factory specifications and fitment, which can simplify installation. Aftermarket options may offer different core designs or materials that prioritize performance or cost.Evaluate build quality, documented fitment for your model year and engine, and warranty coverage when deciding between OEM and aftermarket alternatives.
How often should I flush the radiator coolant?
Coolant flush intervals depend on the coolant type and vehicle maintenance history but often range from every 2 to 5 years. Flushing removes contaminants that reduce cooling efficiency and can help prevent corrosion.Follow the coolant manufacturer and vehicle maintenance recommendations, and inspect coolant condition periodically for discoloration or debris.
Will a radiator fix stop overheating immediately?
Replacing a faulty radiator often resolves overheating caused by leaks or inadequate heat transfer, but not all overheating has the same root cause. Issues like thermostat failures, water pump problems, blocked passages, or air pockets can also cause high temperatures.A full cooling system inspection helps identify all contributing factors so the radiator replacement produces the expected improvement.
Conclusion
When choosing an Infiniti Q50 radiator, prioritize a unit that matches the vehicle's fitment and provides adequate cooling capacity for your driving conditions. Material quality, proper hose and transmission port alignment, and ease of installation are practical factors that influence long-term reliability.Balance cooling performance against installation complexity and warranty coverage. Addressing related cooling system components at the time of replacement reduces the chance of repeat problems and helps ensure stable engine temperatures.
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