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If your Infiniti G37 sees spirited driving, towing, or long highway runs, steering-system temperatures can climb and accelerate wear. Choosing the right power steering cooler can reduce fluid temperatures, preserve seals and hoses, and help maintain consistent steering feel under load. This guide shortlists the top options for the Infiniti G37, with attention to cooling effectiveness, fitment simplicity, and durability. Read on to see the prioritized criteria and the seven best coolers that met our standards, followed by guidance to help you pick the one that suits your driving needs.
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 | A-Premium Power Steering Oil Cooler |  |
| Most Popular A crowd favorite that many people choose with confidence | PartsFlow Power Steering Oil Cooler (compatible with select GM vehicles) |  |
| Best Quality Built to a higher standard if you want something more solid | Mopar Power Steering Cooler (4743237AC) |  |
| Best Budget The cheapest option that still gets the job done reliably | AngyMeck Power Steering Cooler (fits select GM SUVs) |  |
| Most Sold A high-volume bestseller chosen again and again | Edelmann Elite Power Steering Cooler 58040 |  |
| Best Value for Money The sweet spot between price and what you get | Derale 13200 Power Steering Cooler Kit |  |
| Best Overall The best all-around choice for most situations | Dorman Power Steering Cooler 918-301 |  |
1. A-Premium Power Steering Oil Cooler
| Material | Aluminum |
|---|---|
| Gasket or Seal Included | No |
| Reference OEM Part Numbers | 918-304, 918304, 20765247, 22792865 |
This A-Premium power steering oil cooler is an aftermarket aluminum cooler intended to reduce power steering fluid temperature and slow fluid breakdown during heavy use. It installs inline with the steering fluid circuit and is typically mounted where airflow can pass through the cooler fins; the listing includes mounting brackets and reference OEM part numbers to help verify fit. For real-world use it delivers a straightforward preventive benefit: cooler fluid under towing, long drives, or frequent low-speed maneuvers helps maintain consistent steering feel and can extend the life of hoses, seals, and the pump. Build quality appears solid in user reports and the unit matches factory mounting points for many compatible vehicles. Important limitations are that this cooler does not include gaskets or seals, and some installations may require minor trimming or bracket adjustment to clear nearby engine-bay components. Also the product listing does not show vehicle-specific testing for the Infiniti G37, so confirm clearance and hose routing before purchase.
Best for: Reliability-minded owners who prioritize preventive maintenance and want to reduce steering fluid overheating during prolonged drives or heavy use.
Less Ideal for: Those seeking a plug-and-play, vehicle-tested cooler specifically validated for the Infiniti G37 without any modification should consider alternatives with explicit G37 fitment.
- Aluminum construction for efficient heat transfer and corrosion resistance
- Includes mounting brackets for straightforward installation in many engine bays
- Reference OEM part numbers provided to aid compatibility checks
- User reports indicate improved steering fluid temperatures and consistent steering feel
- No gaskets or seals included which may require separate purchases
- May need minor trimming or bracket adjustment for some vehicle installations
- Fitment and testing are not listed specifically for the Infiniti G37
Verdict A solid aftermarket cooler that helps prevent power steering fluid overheating but requires confirming clearance and sourcing seals for a clean install on the G37.
2. PartsFlow Power Steering Oil Cooler (compatible with select GM vehicles)
| Material | Aluminum |
|---|---|
| Reference Number | 918-300, 15009093 |
This PartsFlow power steering oil cooler is a simple replacement-style cooler made from aluminum to resist corrosion and help reduce power steering fluid temperatures. It is installed inline with the vehicle power steering lines to dissipate heat that builds during towing or extended driving, which can help prevent seal failure and steering fluid breakdown. The cooler’s bolt pattern and mounting points are designed for direct fitment on the listed GM models, and customers report straightforward alignment and leak-free installs. The aluminum construction is lighter than older steel units and should resist rusting in wet climates. Limitations are that this unit is vehicle-specific and described fitment does not include Infiniti G37, so it is not a drop-in option for that sedan; buyers must confirm compatibility with their car before purchasing. The part includes only the cooler, so expect to reuse or separately buy hoses, fittings, and mounting hardware if your repair requires them.
Best for: Convenience-driven buyers who want a straightforward, replacement-style cooler that installs quickly and reduces the need for frequent steering system maintenance.
Less Ideal for: Drivers seeking a cooler specifically for the Infiniti G37 or those wanting a complete bolt-in kit with all hoses and fittings included should look elsewhere.
- Aluminum construction reduces corrosion risk compared with steel originals.
- Direct-fit bolt pattern for listed GM models simplifies installation.
- Designed to lower power steering fluid temperature under heavy use.
- Customers report reliable, leak-free fit and OEM-like alignment.
- Not listed or intended for fitment on Infiniti G37 so not usable for that vehicle.
- Package includes only the cooler without extra hoses or fittings needed for some installs.
Verdict A corrosion-resistant, direct-fit power steering cooler for the listed GM SUVs and trucks, but it is not compatible with the Infiniti G37.
3. Mopar Power Steering Cooler (4743237AC)
| Brand | Mopar |
|---|---|
| Model | Power Steering Cooler |
| Exterior | Painted |
| Manufacturer Part Number | 4743237AC |
This Mopar power steering cooler is a direct-fit factory replacement intended to restore the steering fluid cooling capacity on affected Infiniti G37 vehicles. It installs in the same location as the original cooler and uses the factory mounting points and hose connections, which keeps installation straightforward for a professional or a competent DIYer. As a Mopar-branded unit it matches factory specifications, so it helps prevent overheating of steering fluid and reduces stress on the power steering pump during heavy use or high-temperature driving. Practical benefits include a precise fit, painted exterior for corrosion resistance, and a simple two-bolt, two-clamp installation reported by users. Limitations are that the cooler sits low on the vehicle and remains exposed to road debris, so additional protection or careful routing may be advisable if you frequently drive on rough roads. Also, being a factory replacement, it does not include upgraded heavy-duty materials or shielding found on some aftermarket performance coolers.
Best for: Performance-oriented buyers who prioritize maintaining factory cooling performance and reliable fitment on an Infiniti G37 to protect the steering system during spirited driving.
Less Ideal for: Drivers who frequently encounter heavy debris or want an upgraded high-capacity cooler for sustained track use should consider purpose-built aftermarket coolers with extra shielding or higher flow capacity.
- Factory-quality direct fit for straightforward replacement on compatible vehicles
- Painted exterior provides baseline corrosion resistance
- Matches original mounting and hose connections for easier installation
- Helps maintain steering fluid temperature to reduce pump strain during demanding driving
- No additional shielding or reinforced construction to protect against road debris impact
- Not marketed as a performance-upgraded cooler compared with some aftermarket alternatives
Verdict A factory-fit Mopar replacement that restores proper steering fluid cooling for the Infiniti G37 without offering aftermarket performance upgrades.
4. AngyMeck Power Steering Cooler (fits select GM SUVs)
| Material | Aluminum |
|---|---|
| Manufacturer Part Number | AM912101 |
| OEM Part Number | 918-300, 15009093, 14179706, 918300 |
| Compatible Models | Select Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Isuzu Ascender, Oldsmobile Bravada, Saab 9-7x (2002–2009 range) |
This AngyMeck power steering cooler is an aluminum replacement intended for direct-fit installation on the listed Chevrolet, GMC, Buick, Isuzu, Oldsmobile, and Saab models. It functions as a fluid-to-air heat exchanger to reduce power steering fluid temperature during towing or extended driving, and buyers report straightforward fit and factory-quality fitment. The cooler’s aluminum construction offers corrosion resistance and decent thermal transfer for everyday driving and moderate towing loads. Installation is typical of a factory-replacement cooler and can be completed by a competent DIYer or a technician using stock hoses and clamps. Limitations are that this unit is designed for the specific GM platform listed and not for vehicles outside that fitment, and detailed mounting hardware or hose adapters are not highlighted in the product details so minor additional parts may be required for some installs. If you need a simple, low-cost replacement that restores cooling performance without upgrading to a heavy-duty external cooler, this does the job reliably.
Best for: Budget-conscious owners seeking a low-cost, factory-style replacement cooler to restore normal steering fluid temperatures without upgrading to a performance unit.
Less Ideal for: Drivers looking to upgrade cooling capacity for heavy-duty towing or who need a universal cooler for a different vehicle platform should consider heavier-duty or universal aftermarket options.
- Aluminum construction for good heat transfer and corrosion resistance
- Direct-fit design reported to match factory mounting and hose locations
- Compact replacement that restores steering fluid cooling without major modifications
- Multiple positive buyer reports of easy installation and correct fit
- Fitment limited to the specific vehicle list and not suitable for other makes or models
- Product listing does not specify included mounting hardware or hose fittings in detail
Verdict A cost-conscious, factory-style aluminum power steering cooler that restores cooling on the listed GM SUVs but is not a heavy-duty upgrade.
5. Edelmann Elite Power Steering Cooler 58040
| Brand | Edelmann |
|---|---|
| Model | 58040 |
| Compatible Vehicles | 2011-2020 Dodge Journey |
The Edelmann Elite 58040 power steering cooler is a replacement-style cooler built to the vehicle manufacturer specifications to help reduce hydraulic temperatures in power steering systems. It installs inline with the steering fluid lines and is intended to dissipate excess heat that accelerates wear on pumps, hoses, seals, and fluid. The unit uses high-temperature furnace brazing and painted exterior finishing for corrosion resistance and durability, which suits regular driving and occasional heavy-load conditions. For an Infiniti G37, this cooler will help maintain steering performance when the system is under stress from towing, spirited driving, or hot-weather use. Practical benefits include extended component life and steadier steering feel as fluid temperatures stay lower. Limitations are that it is a single cooler unit sized for the specified fitment rather than a multi-core racing cooler, so it is not aimed at extreme motorsport use, and installation requires basic mechanical work or a shop for proper line routing and fittings.
Best for: A risk-averse mainstream buyer who wants a factory-spec replacement to protect the steering system on an Infiniti G37 and prioritize reliability over aftermarket performance upgrades.
Less Ideal for: Drivers seeking maximum cooling for track use or heavy tow duty should consider multi-core or larger aftermarket coolers instead.
- Engineered to meet vehicle manufacturer specifications for a factory-quality replacement
- High-temperature furnace brazing improves durability and leak resistance
- Painted exterior helps resist corrosion and environmental wear
- Designed to lower power steering fluid temperatures, extending pump and hose life
- Single-core style cooler not intended for extreme track or heavy-duty commercial cooling needs
- Installation requires line routing and basic mechanical skills or professional installation
Verdict A factory-quality cooler that reduces steering fluid heat to extend component life, best for reliability-minded owners rather than extreme cooling needs.
6. Derale 13200 Power Steering Cooler Kit
| Special Feature | Expanded Copper Tubing and Aluminum Cooling Fins, Hardware Kit Included |
|---|---|
| Inlet/Outlet Size | 11/32 inch hose barb inlets |
| Model Name | 13200 |
| Installation Type | Self-Adhesive |
The Derale 13200 is a straightforward add-on cooler for power steering systems that mounts behind the grille or on a radiator support to lower fluid temperatures and reduce heat-related pump and seal wear. It uses 1/2 inch copper tubing expanded into aluminum cooling fins and comes with basic mounting hardware and four feet of hose, so installation is usually a simple DIY job for someone comfortable routing fluid lines. The small footprint makes it easy to tuck into tight spaces on an Infiniti G37 where space is limited. Practical benefits include lower operating temperatures during towing or spirited driving and a light, corrosion-resistant construction. Limitations to expect are the short length of included hose and basic clamps, which many buyers replace with heavier-duty hose and clamps for a more secure installation, and the kit's lightweight mounting tabs which some users adapt with custom brackets for off-road durability. The kit performs well for everyday use but needs a bit of extra parts for more demanding installations.
Best for: Practical optimizers who want a cost-effective, easy-to-install way to lower power steering temperatures on an Infiniti G37 and extend component life without extensive modification.
Less Ideal for: Drivers seeking a heavy-duty, off-road rated cooler with reinforced mounting and long factory-style hose runs should consider more robust aftermarket units designed for extreme conditions.
- Compact, low-profile cooler fits easily behind a grille or on radiator supports
- Expanded copper tubing with aluminum fins provides effective heat dissipation
- Includes a basic hardware kit so you can complete most installs without buying additional mounting parts
- Lightweight and corrosion-resistant construction minimizes added load on mounting points
- Only 4 feet of hose and basic clamps are included which may be insufficient for some routing and require aftermarket hose or clamps
- Lightweight mounting tabs can feel fragile for rough-road use and may need custom brackets
Verdict A compact, affordable cooler that reliably reduces steering fluid heat on the G37 but often needs upgraded hose and clamps for tougher installations.
7. Dorman Power Steering Cooler 918-301
| Material | Alloy Steel |
|---|---|
| Manufacturer | Dorman Products |
| Model | 918-301 |
| Manufacturer Part Number | 918-301 |
| OEM Part Number | 1012; 3404824; SK918301; SKTOC023; 15295843; 25895896 |
This Dorman power steering cooler is a factory-replacement style cooler intended to restore cooling performance when the original unit has failed. It installs in the same location and uses the same hose connections as the original on compatible vehicles, making it a straightforward part for a technician or DIYer following removal of front-end trim and headlamp assemblies. The unit is machined alloy steel with rubber hose sections and includes basic clamps, so it delivers durable corrosion resistance compared with corroded original lines while keeping steering fluid temps down to protect the pump and transmission. Several installers report an easy fit and long service life, but some buyers replaced the supplied clamps and treated exposed metal with undercoating to delay future corrosion. A minority of users noted early hose cracking, so inspect and, if needed, reuse or upgrade the factory hoses and clamps during installation. For routine steering-cooler replacement this part balances fit, durability, and value, but attention to clamp quality and hose condition improves long-term reliability.
Best for: Balanced buyers who want a reliable, straightforward replacement cooler that restores factory-style cooling and minimizes installation guesswork when maintaining older vehicles.
Less Ideal for: Buyers looking for a custom or universal cooler solution or those who prefer a full heavy-duty aftermarket unit with upgraded fittings and reinforced hoses.
- Direct replacement design to match original fit and function on listed vehicles
- Machined alloy steel construction resists corrosion better than older corroded coolers
- Includes rubber hose sections so the assembly is ready to install without sourcing hoses
- Well documented fitment and many user reports of straightforward installation
- Included hose clamps are inexpensive and some users replace them with higher quality clamps
- A few reports of early hose cracking suggest inspecting or upgrading hoses at installation
Verdict A practical, factory-style replacement cooler that restores steering-fluid cooling with generally reliable fitment, though swapping the supplied clamps and checking hoses is recommended for longevity.
Choosing the Right Infiniti G37 Power Steering Cooler: Key Factors to Consider
Cooling Capacity
Cooling capacity is the primary function of a power steering cooler and directly affects how well steering fluid temperatures are controlled under sustained load. Higher capacity units remove more heat, which reduces thermal stress on seals, hoses, and the pump. Pay attention to the cooler’s surface area, fin density, and whether it is air- or water-cooled, because those design elements drive heat rejection. Consider how you drive the G37: frequent spirited driving, track sessions, or heavy traffic increases thermal load and may justify a larger cooler. Also note that more aggressive coolers can add pressure drop, so balance capacity with flow requirements of the stock steering circuit.
Fitment And Mounting
A cooler that cannot be securely mounted or that interferes with nearby components will cause frustration during installation and may not perform as intended. Check the cooler’s dimensions and planned mounting locations in the engine bay to ensure clearance from fans, belts, and bodywork. Mounting brackets should allow a rigid attachment that resists vibration and movement. Some kits include vehicle-specific brackets or universal clamps; evaluate whether additional hardware will be required. Ease of access for future maintenance is also important, as coolers that are hard to reach complicate hose checks and potential repairs.
Hose And Fitting Compatibility
Matching the cooler’s fittings to the G37’s steering lines is essential to avoid leaks and unnecessary adaptors. Consider the inlet and outlet thread types and diameters, and whether the kit includes appropriate hose ends, clamps, or banjo fittings. Using excessive adapters can introduce failure points or reduce flow. Some coolers are designed to be plumbed inline at the steering rack or pump return; verify the recommended plumbing route and whether factory hoses must be modified. Properly sized hoses and secure clamps maintain system pressure and prevent air ingestion, which can cause noise and reduced steering performance.
Material And Corrosion Resistance
Materials used in the cooler’s core, end tanks, and fittings determine long-term durability in the automotive environment. Aluminum cores with corrosion-resistant coatings are common because they balance weight and thermal conductivity, but check for quality brazing and protective finishes. Stainless steel or brass fittings resist galvanic corrosion when paired with dissimilar metals. Exposure to road salt, moisture, and heat cycles increases the risk of corrosion, so prioritize units with proven protective measures. A durable finish also reduces the chance of leaks developing from pitting or compromised joints.
Installation Difficulty
Installation complexity varies from simple bolt-on kits to more involved plumbing and bracket fabrication. Assess your mechanical skill and available tools before choosing a cooler. Kits that include clear instructions, labeled hoses, and all necessary hardware reduce install time and error. Anticipate time for fluid bleeding, hose routing, and verifying there are no leaks. If professional installation is not an option, choose a solution that minimizes line alterations and uses common fittings. Ease of installation also affects how quickly you can return the vehicle to service and whether you can perform periodic inspections yourself.
Impact On Steering Feel And Flow
Adding a cooler changes the hydraulic circuit by introducing additional hose length and potential pressure drop. While most properly sized coolers have minimal effect on steering response, undersized or overly restrictive units can make the system feel heavier or introduce noise. Consider how the cooler integrates with the pump and rack flow characteristics of the G37. Look for designs that balance heat rejection with low flow resistance and that maintain steady hydraulic pressure throughout the operating range. Proper installation and correct hose routing help preserve steering feel while providing thermal benefits.
FAQ
How do I know if my Infiniti G37 needs a power steering cooler?
If you notice a boiling smell, foamy fluid, or inconsistent steering feel after heavy use, elevated fluid temperatures may be the cause. Recurrent hose or seal failures and frequent fluid darkening are also signs that thermal stress is affecting the system. Driving patterns such as aggressive track days, long towing runs, or extended low-speed traffic can increase the likelihood that a cooler will help.
Can I install a power steering cooler myself on an Infiniti G37?
Many coolers are designed for straightforward installation with basic hand tools, but the job requires familiarity with hydraulic lines, correct hose routing, and proper bleeding of the system. Kits that include vehicle-specific brackets and clear instructions reduce complexity. If you are unsure about working with pressurized steering lines or diagnosing leaks, professional installation is advisable to avoid damage.
Where is the best place to mount a steering cooler on the G37?
Mount the cooler where it receives consistent airflow but is protected from road debris and moving parts. Common locations include in front of the radiator or condenser where air flow is strong, or tucked along the front crash bar with adequate clearance. Ensure the position allows secure mounting, easy access for inspection, and does not obstruct service points or cooling components.
Will adding a cooler affect steering performance?
A properly sized and installed cooler usually has minimal impact on steering feel while lowering fluid temperatures. However, overly restrictive units or improper hose routing can introduce pressure drop and slightly alter response. Choosing a cooler designed for automotive use and ensuring fittings match the G37’s lines helps maintain normal performance.
How do I maintain a power steering cooler?
Regularly inspect hoses, fittings, and the cooler core for leaks, corrosion, or physical damage. Keep the cooling fins free of debris and avoid high-pressure cleaning aimed directly at fin areas to prevent damage. Periodic fluid checks and following the vehicle’s recommended service intervals help ensure the entire steering system remains healthy.
Can a cooler prevent steering fluid from overheating during track use?
A cooler can significantly reduce fluid temperature rise during sustained high-load driving, improving reliability and reducing the risk of seal degradation. The effectiveness depends on cooler capacity, airflow, and installation quality. While it does not eliminate heat generation, it reduces peak temperatures and extends component life under demanding conditions.
How We Chose the Best Infiniti G37 Power Steering Cooler
We focused on components that directly improve thermal management and long-term system reliability for the Infiniti G37 power steering cooler applications. Key evaluation criteria included cooling capacity under sustained load, which determines how much temperature rise a cooler can prevent; construction materials and corrosion resistance, to ensure long service life in automotive environments; inlet and outlet fittings and hose compatibility, to minimize leaks and simplify plumbing; physical footprint and mounting options, so the cooler can be installed without obstructing other components; ease of installation, including whether common hand tools and basic mechanical skill are sufficient; and overall build quality, including brazing and fin density, which affect durability and heat transfer. We excluded products lacking clear vehicle-specific fitment information, units intended only for industrial or non-automotive hydraulic systems, and poorly documented kits with ambiguous parts lists. The result is a curated set of coolers that meet real-world installation and performance expectations for the G37.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing a power steering cooler for an Infiniti G37, prioritize cooling capacity, proper fitment, and materials that resist corrosion. Balance heat rejection with low flow resistance and select a mounting location that provides steady airflow without interfering with other systems. Consider installation complexity and whether you need a complete kit with hoses and brackets. Focusing on these factors will help you reduce thermal stress, extend component life, and maintain consistent steering performance.
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