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If you drive an Infiniti Q50 regularly or tow light loads, keeping transmission temperatures in check helps preserve shift quality and gearbox longevity. Choosing the right transmission cooler can reduce thermal stress and lower the chance of premature component wear. This guide presents seven shortlisted Infiniti Q50 transmission cooler options chosen for their cooling performance and installation practicality. We evaluated each pick for heat rejection, fitment simplicity, and durability to help you find a solution that matches how you drive. Read on for practical factors to weigh before you pick.
Looking for other parts? See all Infiniti Q50 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | DriveMedley Transmission Oil Cooler, 8-Pass Tube-and-Fin |  |
| Most Popular A crowd favorite that many people choose with confidence | EVIL ENERGY 5/16" Transmission Oil Cooler Kit, 6-Pass Tube-and-Fin |  |
| Best Quality Built to a higher standard if you want something more solid | Mishimoto 13-Row Stacked-Plate Universal Transmission Cooler |  |
| Best Budget The cheapest option that still gets the job done reliably | FILTERUP 8-Row Aluminum Transmission Oil Cooler Kit (5/16" Hose) |  |
| Most Sold A high-volume bestseller chosen again and again | KOROP LPD47391 40k Low-Pressure-Drop Transmission Oil Cooler Kit |  |
| Best Value for Money The sweet spot between price and what you get | BARTOO 1/2" Transmission Oil Cooler Kit, Aluminum Tube-and-Fin |  |
| Best Overall The best all-around choice for most situations | EVIL ENERGY 30-Row Stacked-Plate Oil Cooler (10AN) |  |
1. DriveMedley Transmission Oil Cooler, 8-Pass Tube-and-Fin
| Core design | 8 pass tube and fin |
|---|---|
| Material | Aluminum |
| Hose ID compatibility | 5/16" ID lines |
| Hose operating temp range | -40°F to 257°F |
This DriveMedley transmission oil cooler is a compact aluminum 8-pass tube-and-fin unit intended to reduce transmission fluid temperatures by increasing heat transfer area and air flow over the fins. It is typically mounted at the front of the vehicle where airflow is best and tied into the transmission line using 5/16" ID hose; the kit includes CPE hoses rated for a wide temperature range and high pressure. For an Infiniti Q50 this cooler can be used when additional cooling is needed for towing, spirited driving, or when the factory cooling margin is insufficient. Notable features include the multi-pass core for better thermal regulation, machined exterior, and included mounting brackets and hose hardware. Practical benefits are lower operating fluid temperatures under load and an easy-to-pack footprint that fits in tighter front-end locations. Limitations are that it is a universal fit rather than a Q50-specific part so final placement and hose routing require careful measurement, and it may need custom brackets or trimming to clear some Q50 front-end components.
Best for: Reliability-focused buyers who prioritize keeping transmission temperatures down during towing, track days, or heavy-duty use and want a straightforward aftermarket cooling upgrade.
Less Ideal for: People seeking a vehicle-specific, drop-in cooler for the Infiniti Q50 or those unwilling to modify mounting points or hose routing should consider a dedicated Q50 cooler or professional installation.
- 8-pass tube-and-fin core increases surface area for better heat rejection compared with single-pass coolers
- Aluminum construction resists corrosion and keeps unit lightweight
- Included CPE hoses rated for wide temperatures and high burst pressure simplify hookups
- Compact 15.66" x 10" footprint fits into tighter front-end locations for easier installation
- Universal design may require mock-up, trimming, or custom mounting to fit the Q50 front bumper area
- Not tailored to Infiniti Q50 cooling lines so additional hose adapters or clamps can be necessary
Verdict A compact, reliability-minded aftermarket cooler that lowers transmission temps for an Infiniti Q50 but will require fitment work since it is a universal unit.
2. EVIL ENERGY 5/16" Transmission Oil Cooler Kit, 6-Pass Tube-and-Fin
| Core type | 6-pass tube and fin |
|---|---|
| Hose connection | 5/16" ID lines |
| Hose material | CPE with 145 PSI working pressure |
| Core material | Aluminum alloy |
This EVIL ENERGY kit is a compact 6-pass tube-and-fin transmission oil cooler intended to reduce automatic transmission fluid temperatures by routing ATF through the aluminum core while exposed to ambient airflow. The kit ships with CPE hose, basic fittings and mounting clips so it can be mounted in front of the radiator or condenser where airflow is best. In practice it is used as an auxiliary cooler for vehicles that run hot in traffic or under towing loads and is sized for 5/16" ID transmission lines. Buyers report noticeable temperature drops and smoother shift behavior after installation. The aluminum core and machined exterior give it solid construction, but the universal fittings may need modification or better clamps to seal perfectly on some factory lines. It is relatively small compared with larger multi-pass cores, so cooling capacity is modest and placement is important for performance. Installation is straightforward for a home mechanic but those wanting maximum cooling for heavy towing may prefer a larger dedicated cooler.
Best for: Convenience-driven buyers who want an easy aftermarket way to reduce transmission temperatures without major vehicle modifications and prefer a simple bolt-on solution.
Less Ideal for: Owners planning heavy towing, motorsport use, or who need maximum heat rejection should consider a larger, vehicle-specific cooler designed for high-duty applications.
- Complete kit includes cooler, hose and basic fittings for quick installation
- Aluminum tube-and-fin core reduces ATF temperature when mounted in good airflow
- Compact footprint fits in tight spaces behind grille or in front of condenser
- Well-built machined exterior offers durable, corrosion-resistant surface
- Universal brass adapters and supplied clamps may not seal on every vehicle without modification
- Smaller 6-pass core delivers modest cooling compared with larger multi-row coolers
Verdict A compact, easy-to-install auxiliary cooler that lowers transmission fluid temps for everyday driving but may need upgraded fittings or a larger core for heavy-duty use.
3. Mishimoto 13-Row Stacked-Plate Universal Transmission Cooler
| Core | 13-row stacked-plate |
|---|---|
| Hose length | 50" SAE J1532 |
| Adapters | 3/4"–16 female to 3/8" barb O-ring sealed |
| GVW rating | Up to 40,000 GVW |
This Mishimoto 13-row stacked-plate transmission cooler is built for aggressive thermal control and long service life. It pairs a high-efficiency aluminum stacked-plate core with a powder-coat finish and includes a 50" SAE J1532 hose, stainless-steel clamps, O-ring sealed adapters, and universal mounting brackets for a complete install. In practice it is installed ahead of the factory cooler or in series to dramatically reduce transmission fluid temps during towing, spirited driving, or steep grades. Buyers report consistent, large temperature drops and solid durability after extended highway use. The cooler is rated to support up to 40,000 GVW and the supplied hardware simplifies placement and plumbing for most installs. The main limitation is its potent cooling capacity: on lighter cars or CVT-equipped vehicles it can overcool fluid below the range some manufacturers prefer, so you may need a thermostat-controlled bypass or smaller core to maintain ideal operating temperature. Also, as a universal unit it may require trimming or additional hose for neat routing on some vehicles including the Infiniti Q50.
Best for: Performance-oriented buyers who prioritize maximum transmission protection under heavy loads, towing, or spirited driving and want a rugged, high-capacity cooler that reliably reduces fluid temperatures.
Less Ideal for: Buyers seeking a mild temperature reduction or a vehicle-specific plug-and-play cooler for precise factory-range operation should consider smaller or model-specific units instead.
- High-efficiency 13-row stacked-plate core delivers substantial reduction in transmission fluid temperature
- Comprehensive kit includes SAE J1532 hose, stainless clamps, O-ring adapters, and universal brackets for a mostly self-contained installation
- Corrosion-resistant aluminum construction with powder-coat finish for long-term durability in harsh conditions
- Rated to handle heavy towing loads up to 40,000 GVW, suitable for high-stress and performance applications
- Universal fit may need trimming, extra hose, or custom mounting to tidy the installation on some chassis
- Very strong cooling performance can drop fluid temperatures below preferred range for some transmissions, including CVTs used in certain Q50 models
Verdict If you want best-in-class cooling for demanding use on an Infiniti Q50, this Mishimoto 13-row cooler delivers extreme temperature control and rugged durability but may be overkill where a milder, factory-range temperature is desired.
4. FILTERUP 8-Row Aluminum Transmission Oil Cooler Kit (5/16" Hose)
| Core type | 8 pass tube-and-fin |
|---|---|
| Hose size | 5/16" ID |
| Core material | T-6061 Aluminum |
| Hose material | CPE |
| Included mounting | Clips, foam pads, hose clamps, mounting rods |
This FILTERUP 8-row transmission oil cooler is a budget-friendly add-on intended to reduce transmission fluid temperatures and help prevent overheating in driven conditions that stress the gearbox. It installs inline with 5/16" ID transmission cooler lines and includes hose, clamps, mounting clips, foam pads, and basic mounting rods so you can fit it ahead of or behind the radiator depending on space. The 8-pass tube-and-fin core and T-6061 aluminum construction give decent heat transfer for the price while the supplied CPE hose is flexible for routing in tighter engine bays. Real-world benefits are cooler fluid under towing or spirited driving and potentially longer transmission life. Be aware the kit uses simple strap-style mounting and thin external fins that are easy to bend or damage, so you may need to fabricate sturdier brackets for a secure install on an Infiniti Q50. Fitment requires 5/16" factory-style lines on the Q50, and professional installation is recommended if you are not comfortable routing lines and bleeding the system.
Best for: Budget-conscious Infiniti Q50 owners who want an affordable transmission cooling upgrade to reduce fluid temperatures during towing or spirited driving and are comfortable doing or arranging a moderate aftermarket installation.
Less Ideal for: Drivers seeking a factory-quality direct-fit cooler or those unwilling to modify mounting points should consider a higher-end, vehicle-specific unit or dealer upgrade.
- 8-row tube-and-fin core offers improved cooling capacity compared with single-pass coolers
- T-6061 aluminum construction resists corrosion and conducts heat effectively
- Kit includes hoses, clamps, mounting clips and foam pads for a mostly complete installation
- Flexible CPE hose simplifies routing in constrained engine bays
- Mounting hardware is basic and may require custom brackets for a secure fit
- External fins are thin and can be easily bent or damaged during installation or maintenance
Verdict A low-cost, effective transmission cooler for Q50 owners on a budget, but expect basic mounting hardware and possible bracket fabrication for a durable install.
5. KOROP LPD47391 40k Low-Pressure-Drop Transmission Oil Cooler Kit
| Material | Alloy Steel, Aluminum |
|---|---|
| Connector Type | Flare |
| Thread Type | NPT |
| Thread Size | 3/8 |
This KOROP LPD47391 kit is a brazed aluminum transmission cooler built to improve cooling capacity for vehicles with heavy duty or towing conditions. It installs as an inline cooler to lower transmission fluid temperatures and reduce stress during prolonged highway driving or towing on an Infiniti Q50. The kit highlights low-pressure-drop construction for better flow and claims roughly 30 percent more cooling compared with simpler tube-and-fin options. It ships with a full set of brackets, bolts, fasteners and fittings so you can mount and route the lines without sourcing extra parts. Practical benefits include noticeable drops in operating temperature during extended runs and a compact package that fits tight engine bays typical of the Q50. Limitations to consider are the included hose and fitting types which some owners reported as marginal quality or nonstandard sizes that may require replacing or adapting to match factory fittings on the Q50, and installation may require drilling or relocating brackets rather than using factory mounting points.
Best for: Risk-averse mainstream buyers who prioritize protecting transmission life during regular towing or spirited highway use on their Infiniti Q50 and want a factory-style replacement that reduces operating temperature without major system changes.
Less Ideal for: Buyers who prefer a plug-and-play cooler that matches every factory fitting exactly or who want premium braided stainless lines included should consider higher-end kits or professional installation options.
- Brazed aluminum construction for efficient, corrosion-resistant heat transfer
- Low-pressure-drop design to maintain flow while increasing cooling capacity
- Complete mounting hardware and fittings included for a self-contained installation
- Compact profile suited to tight engine bays and towing setups
- Included hoses and fittings use less-common connector types and have variable quality according to user reports
- May require custom mounting or drilling rather than using existing factory brackets for the Q50
Verdict A compact, brazed-aluminum cooler that meaningfully lowers transmission temps for an Infiniti Q50 but may need hose or fitting changes during installation.
6. BARTOO 1/2" Transmission Oil Cooler Kit, Aluminum Tube-and-Fin
| Material | T-6061 aluminum alloy |
|---|---|
| Cooling type | Tube and fin |
| Line size compatibility | 1/2" ID transmission lines |
| Working pressure | 145 psi |
| Burst pressure | 900 psi |
This BARTOO transmission oil cooler is a small, universal tube-and-fin unit intended to lower ATF temperatures by routing fluid through multiple thin tubes with cooling fins exposed to airflow. Typical installation places it ahead of the radiator or behind the grille where it gets steady air; it accepts 1/2" ID transmission lines and comes as a single cooler ready for simple bracket mounting. The aluminum T-6061 construction and claimed 145 psi working pressure mean it is suitable for everyday towing, city driving, or as an inexpensive upgrade to keep the Q50s transmission running cooler under load. In practice the cooler's compact size makes it easy to fit in tight engine bays, but some buyers should plan to source correct fittings and flare adapters since the package does not include a wide range of hardware. Build quality is generally good for the price, though a few users reported brittle fittings and chipping if over-tightened, so use care during plumbing. For Infiniti Q50 owners seeking an affordable way to reduce ATF temps, this delivers sensible cooling without a large cost or installation footprint.
Best for: Practical optimizers who want an affordable, no-frills transmission cooler to lower operating temperatures on an Infiniti Q50 without major modification or expense.
Less Ideal for: Drivers seeking a heavy-duty, high-capacity cooler for frequent extreme towing or motorsport use should consider larger multi-pass or stacked-plate coolers designed for sustained high loads.
- Tube-and-fin design provides efficient air-side heat transfer for noticeable ATF temperature drop.
- T-6061 aluminum construction offers corrosion resistance and a high burst pressure rating for typical automotive use.
- Compact footprint fits into tight engine bay spaces common on the Infiniti Q50 and is easy to mount ahead of the radiator.
- Simple universal plumbing works with 1/2" ID transmission lines used in many conversions and aftermarket setups.
- Mounting hardware and some specific fittings are not included so additional adapters may be required for a clean install.
- Some users reported fragile or chipping fittings when overtightened, requiring cautious assembly and quality adapters.
Verdict A compact, budget-friendly aluminum tube-and-fin cooler that reliably lowers transmission temperatures on an Infiniti Q50 if you accept sourcing a few fitting adapters for installation.
7. EVIL ENERGY 30-Row Stacked-Plate Oil Cooler (10AN)
| Rows | 30 |
|---|---|
| Fitting size | 10AN |
| Material | Aluminum alloy |
| Test pressure | 116 PSI |
| Burst pressure | 232 PSI |
This EVIL ENERGY 30-row stacked-plate oil cooler is a compact, high-efficiency aftermarket unit intended to reduce transmission or engine oil temperatures. It installs in a location with good airflow and uses -AN fittings for leak-resistant hose connections, making it suitable for custom plumbing and swaps. The stacked-plate design increases heat transfer compared with basic tube-and-fin coolers, so you can expect lower operating temps under towing, spirited driving, or heavier loads. The cooler is lightweight and machined aluminum for corrosion resistance, and most buyers will mount it using a simple bracket or fabricate a small support. Important limitations are its universal fitment and compact size: you may need additional adapters, brackets, or longer lines to fit an Infiniti Q50, and some buyers report broken fittings or difficult install locations that require careful routing and torque. For larger or heavily used transmissions a bigger cooler may perform better. For a balanced buyer seeking a cost-effective, higher-efficiency upgrade this cooler is a practical option if you are comfortable adapting fittings and brackets.
Best for: A balanced all-round buyer who wants a relatively compact, higher-efficiency transmission or oil cooler upgrade for an Infiniti Q50 and is willing to do moderate custom plumbing or bracket work.
Less Ideal for: Drivers who want a direct bolt-on, no-modification factory-style replacement or those planning extreme towing or motorsport duty should consider purpose-built, vehicle-specific larger coolers instead.
- High cooling efficiency from 30-row stacked-plate construction
- Machined aluminum body offers corrosion resistance and light weight
- -AN fittings simplify braided-line connections and reduce leaks
- Compact footprint fits into tight engine bays where space is limited
- Universal design may require adapters, custom brackets, or modified lines for direct fitment to a Q50
- Some users report fitting failures or broken fittings under heavy use
- 10AN/30-row size may be undersized for very heavy towing or extreme performance applications
Verdict A compact, high-efficiency stacked-plate cooler good for Q50 owners wanting improved oil/transmission cooling if you can handle minor custom installation and fitting adaptations.
Choosing the Right Infiniti Q50 Transmission Cooler: Key Factors to Consider
Cooling Capacity
Cooling capacity determines how much heat the cooler can remove from the transmission fluid under sustained stress. A higher capacity unit will better manage temperatures during hill climbs, spirited driving, or when operating in hot ambient conditions.
When assessing capacity, look for published heat rejection rates or larger core surface area and fin density. Larger cores tend to reduce fluid temperature more effectively but can require more space and may change mounting needs. Matching capacity to your driving habits helps prevent overheating without overbuilding the system unnecessarily.
Core Design and Materials
Core construction affects thermal transfer efficiency and long-term durability. Brazed-aluminum cores usually offer strong thermal conductivity and resistance to vibration, while thicker tubes and robust fins improve heat exchange.
Materials that resist corrosion are important if the vehicle operates in wet or salty environments. Consider features like multi-pass cores for better heat exchange and reinforced end tanks to minimize the risk of stress cracks over time.
Fitment and Mounting Location
Where and how the cooler mounts on the Infiniti Q50 will influence airflow and installation complexity. Front-mounted radiators or condenser-adjacent locations typically provide the best airflow for cooling but may require specific brackets or slight trim adjustments.
Ensure the cooler's dimensions and hose routing work with available space and do not interfere with factory components. A vehicle-specific fit reduces installation time and the need for custom brackets, making service and future removal easier.
Included Hardware and Hose Compatibility
Kits that include hoses, clamps, fittings, and mounting brackets reduce guesswork during install. Compatibility with the Q50's transmission cooler lines or provision of correct adapter fittings prevents leaks and simplifies plumbing.
Check whether hoses are rated for transmission fluid and operating pressure. Quality clamps and fittings minimize the chance of seepage and make future maintenance easier.
Installation Difficulty
Installation complexity affects total cost and time. Some coolers offer vehicle-specific kits designed for bolt-on installs, while others are universal and may require cutting, relocating components, or fabricating brackets.
If you plan to install the cooler yourself, look for kits with clear instructions and all necessary hardware. Factor in the need to drain and refill transmission fluid and the potential for bleeding air from the system if hoses are disconnected.
Durability and Corrosion Resistance
Longevity depends on construction quality and resistance to environmental factors. Coolers exposed to road debris, salt, and moisture should have protective coatings or corrosion-resistant alloys.
Welded or brazed joints and reinforced fittings reduce the chance of leaks. Consider units with replaceable or serviceable components, and ensure warranty or support information is available to address potential failures.
FAQ
How do I know if my Infiniti Q50 needs a transmission cooler?
Signs that a Q50 could benefit from extra cooling include consistently high transmission temperatures under load, frequent towing or heavy driving in hot climates, or noticeable transmission heat during prolonged drives. Monitoring transmission temperature or observing extended periods of hard use often indicates when additional cooling is appropriate.
Can I install an external transmission cooler myself on the Q50?
Many owners can install an external cooler with moderate mechanical skills and basic tools if the kit includes vehicle-specific fittings and clear instructions. Installation typically involves connecting to the transmission cooler lines, securing the unit for adequate airflow, and refilling and checking fluid levels. If hoses or fittings do not match, professional help is advisable.
Will adding a transmission cooler change how I service the transmission?
Adding a cooler can slightly alter service steps, since there are additional lines and fittings to inspect for leaks and potential fluid reservoirs to consider when draining. Routine fluid checks remain important, and you should watch for any seepage around hose connections. Overall maintenance frequency does not usually change.
Are universal transmission coolers a good option for the Q50?
Universal coolers can work but often require more fabrication, custom brackets, and fitting adapters to integrate cleanly with the Q50. For a neater, faster install on this vehicle, a unit or kit with confirmed fitment to the Q50 reduces installation time and the risk of improper hose routing.
How much cooling improvement should I expect from an added cooler?
Improvement depends on cooler size, core design, mounting location, and driving conditions. A properly sized cooler with good airflow often reduces transmission operating temperature noticeably under sustained load, which helps reduce thermal degradation of fluid and internal components. Exact temperature changes vary by setup and usage.
What are common transmission cooler failure symptoms to watch for?
Typical signs include fluid leaks around fittings or the cooler, rising transmission temperatures under conditions that previously behaved normally, and contamination of fluid from debris or corrosion. If you notice any of these issues, inspect hoses, fittings, and the cooler core promptly to prevent further damage.
How We Chose the Best Infiniti Q50 Transmission Cooler
We narrowed choices by focusing on performance metrics and real-world installation factors relevant to the Infiniti Q50. Primary criteria included cooling capacity under sustained load, the cooler's core design and material, and direct fit or vehicle-specific compatibility to avoid unnecessary modifications. Installation factors were assessed, such as whether a kit included the necessary hoses, fittings, and mounting hardware and how straightforward the routing and attachment tend to be on the Q50. Durability and corrosion resistance mattered as well, emphasizing plain or treated aluminum cores and sealed brazed joints that resist leaks and environmental wear. We also considered serviceability, including access to inlet and outlet fittings and the ability to replace lines if needed. We excluded universal options that require extensive custom fabrication, products lacking clear compatibility information for the Infiniti Q50, and any units without basic corrosion protection or proper line fittings.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize cooling capacity, fitment, and installation practicality when selecting an Infiniti Q50 transmission cooler. Match the cooler size and core design to how you drive, ensuring the mounting location provides consistent airflow and that hoses and fittings are compatible with the vehicle. Be realistic about tradeoffs: larger cores cool better but may require more space and work to install. Choosing a unit with corrosion-resistant construction and clear installation hardware will reduce long-term maintenance and help protect the transmission.
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