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If you drive an Infiniti Q50 regularly or push it hard, a dedicated power steering cooler can reduce fluid temperatures and protect the steering system from premature wear. Choosing the right unit matters because cooling capacity, durability, and installation approach determine how effectively the cooler reduces operating temperatures and fits in your engine bay.This guide covers the top shortlisted power steering coolers for the Infiniti Q50, explaining the evaluation criteria and the tradeoffs to consider. Read on to see which options made the list and why they earned a recommendation.
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 | Derale 4-Pass Power Steering Cooler Kit |  |
| Best Quality Built to a higher standard if you want something more solid | Derale Series 7000 Power Steering Cooler Kit |  |
| Best Value The sweet spot between price and what you get | Derale 13200 Power Steering Cooler Kit |  |
| Best Budget The cheapest option that still gets the job done reliably | Hayden Automotive 1011 Power Steering Oil Cooler |  |
| Highest Rated A top-rated pick with lots of positive feedback | Hayden 1009 Power Steering Oil Cooler (9 inch) |  |
| Best Seller A high-volume bestseller chosen again and again | Derale 13309 Power Steering Cooler Kit (Black) |  |
1. Derale 4-Pass Power Steering Cooler Kit
| Model | 4-Pass Power Steering Cooler |
|---|---|
| Manufacturer | Derale |
| Item model number | 13212 |
The Derale 4-Pass Power Steering Cooler Kit is a compact add-on cooler that uses 1/2 inch copper tubing expanded into aluminum fins to lower steering fluid temperature. It installs inline with the power steering hose using 11/32 inch hose barb inlets and is typically mounted where airflow can pass through the fins. In normal driving it reduces heat-related wear on the pump and seals, which can prolong component life during towing, spirited driving, or extended city traffic. The cooler’s 4-pass design increases fluid exposure to the fins for more efficient cooling than single-pass units while remaining lightweight and unobtrusive. Limitations include a basic kit-level fitment that may require custom hose routing or clamps for a clean installation on some vehicles and the need to locate the cooler where it receives adequate airflow to be effective. It is a straightforward, practical upgrade for reducing steering system temperatures without major modifications.
Best for: Balanced, all-round buyers who want a practical reliability upgrade to reduce power steering temperatures and extend component life without heavy modification.
Less Ideal for: Drivers looking for a bolt-in, vehicle-specific plumbing kit with dedicated brackets and fittings or those who cannot provide an airflow location for the cooler.
- 4-pass tubing design increases fluid exposure to cooling fins for better heat dissipation
- Copper tubing expanded into aluminum fins provides good thermal transfer
- Compact, lightweight kit that is easy to tuck into tight engine bays
- Helps extend pump and seal life by reducing fluid temperature during heavy use
- May require custom hose routing or additional fittings for a clean install on some vehicles
- Effectiveness depends on mounting location and available airflow
Verdict: A compact 4-pass cooler that lowers steering fluid temperatures to help extend pump and seal life with minimal space impact.
2. Derale Series 7000 Power Steering Cooler Kit
| Material | Aluminum/Copper |
|---|---|
| Inlet/Outlet | 11/32 in Hose Barb |
| Finish | Black Powder Coat |
| Type | Tube and Fin Core |
The Derale Series 7000 power steering cooler kit is a small tube-and-fin cooler intended to lower steering fluid temperature for improved system longevity and consistent steering feel. It installs inline using 11/32 inch hose barb fittings and includes mounting hardware and hose, so it is typically used between the power steering pump and rack or reservoir to shed heat during towing, spirited driving, or stop-and-go traffic. The aluminum and copper construction with a black powder coat gives corrosion resistance and a tidy under-hood appearance. Its compact core fits in tight spaces behind the bumper or near the radiator while still offering better thermal transfer than an uncooled line. Limitations are its modest core size, which means it is best for everyday performance improvement rather than heavy-duty cooling for large towing loads, and hose barb fittings require secure clamp connections to avoid leaks. Overall it is a straightforward, durable factory-replacement style cooler for owners who want lower steering fluid temps without complex plumbing.
Best for: Balanced all-round buyers who want a reliable, easy-to-install cooler to lower power steering fluid temperatures for improved steering consistency and component life without major modifications.
Less Ideal for: Owners who need heavy-duty cooling for frequent towing, motorsport use, or substantially modified steering systems should choose a larger or purpose-built cooler.
- Aluminum/copper tube-and-fin design provides efficient heat transfer for its size
- Compact core and included hardware allow installation in tight engine bays
- Black powder coat finish offers corrosion resistance and a clean appearance
- Includes hose and fittings for a mostly complete install
- Small core size limits cooling capacity for heavy towing or extreme use
- Uses hose barb fittings that require careful clamping to prevent leaks
Verdict: A compact, durable inline power steering cooler that lowers fluid temperatures with minimal fuss for everyday driving and light towing.
3. Derale 13200 Power Steering Cooler Kit
| Special Feature | Expanded Copper Tubing and Aluminum Cooling Fins |
|---|---|
| Inlet Size | 11/32 inch hose barb inlets |
| Model Name | 13200 |
| Installation Type | Self-Adhesive |
The Derale 13200 is a compact power steering cooler kit intended to reduce fluid temperature and help prevent heat-related pump failure. It mounts in front of the radiator or condenser and routes steering fluid through 1/2 inch copper tubing expanded into aluminum cooling fins to shed heat during normal driving and towing. The kit includes hose barb inlets and basic hardware for bolt-on installation, making it a straightforward add-on for routine maintenance or cooling upgrades. In practice it lowers operating temperature during prolonged low-speed or high-load use and can extend pump and seal life when heat is a factor. Because it is a simple inline cooler with a medium core area, cooling is effective for daily driving and light-duty towing but may be modest compared with larger or multi-pass coolers. Installation is practical for a home mechanic but may require careful routing to avoid chafing or kinking of the lines.
Best for: Convenience-driven buyers who want a simple, low-effort upgrade to reduce steering fluid heat and prolong pump life without major modification.
Less Ideal for: Drivers who frequently do heavy towing, competitive driving, or need maximum multi-pass cooling should consider larger or purpose-built heavy-duty coolers instead.
- Compact core with expanded copper tubing and aluminum fins for efficient heat transfer
- Includes hose barb inlets and hardware for a straightforward installation
- Small footprint fits in tight spaces ahead of the radiator or condenser
- Helps lower steering fluid temperature to reduce pump and seal stress
- Cooling capacity is moderate and may be insufficient for heavy towing or extreme-duty use
- Does not include detailed vehicle-specific fitment instructions
Verdict: A compact, easy-to-install power steering cooler that reduces fluid temperature and helps extend pump life for everyday and light-duty use.
4. Hayden Automotive 1011 Power Steering Oil Cooler
| Model | Power Steering Oil Cooler 1011 |
|---|---|
| Recommended hose I.D. | 3/8 inch |
| Exterior | Machined |
| Unit count | 1.0 Count |
| Manufacturer | Hayden Automotive |
The Hayden 1011 power steering oil cooler is an inline cooler intended to reduce operating temperature in power steering systems where heat is a concern, like vehicles with larger tires or frequent low-speed work. It installs in the return hose and comes with mounting hardware for a straightforward bolt-up. By shedding heat it helps protect the pump, hoses, seals and fluid, which can reduce premature failures and maintenance on older or heavily used systems. The unit is machined for durability and sized for systems using 3/8 inch I.D. return hose; Hayden offers similar coolers for different duty levels. Limitations are that fitment depends on hose inner diameter and available mounting space, and it does not include hose or fittings beyond the supplied bracket hardware, so installers should verify hose size and routing before purchase.
Best for: A risk-averse mainstream buyer looking to protect factory steering components on a Scion tC by reducing heat-related wear and extending service intervals.
Less Ideal for: Drivers who need a universal, tool-free retrofit or who cannot accommodate a small inline cooler in their engine bay should consider integrated radiator-mount options or professional installation.
- Reduces power steering fluid temperature to help prolong pump and hose life
- Machined exterior for a durable, serviceable finish
- Includes mounting hardware for simpler installation
- Sized for common 3/8 inch I.D. return hoses used in many aftermarket setups
- Requires matching hose inner diameter and enough underhood space for installation
Verdict: A compact, machined inline cooler that lowers steering fluid temperatures to help extend the life of Scion tC power steering components.
5. Hayden 1009 Power Steering Oil Cooler (9 inch)
| Material | Aluminum |
|---|---|
| Overall Length | 9 Inches |
| Fits Hose I.D. | 3/8 Inch |
| Construction | Tube, Fin |
The Hayden 1009 is a compact aluminum power steering oil cooler intended to lower operating temperature in hydraulic steering systems by increasing fluid surface area and airflow. It mounts inline with 3/8-inch I.D. return hose lines and is commonly used on vehicles that see towing, larger tires, or prolonged low-speed steering work where fluid heat builds up. The unit includes mounting hardware and uses a tube-and-fin, two-row construction to improve heat rejection while remaining lightweight and machined for corrosion resistance. Installation is straightforward for a competent DIYer and the cooler helps reduce wear on pumps, hoses, seals, and fluid by keeping temperatures in check. Limitations include its fixed 9-inch length and 3/8-inch fittings, which restrict fitment to systems that accept that hose size, and it is a single-purpose add-on so it does not address underlying steering component faults.
Best for: Reliability-focused owners who want to reduce steering-system heat and extend the life of pumps, seals, hoses, and fluid without major modifications.
Less Ideal for: Drivers looking for universal fitment or adjustable plumbing options should consider models with multiple inlet sizes or adapter kits instead.
- Aluminum tube-and-fin construction for effective heat dissipation and corrosion resistance
- Includes mounting hardware for straightforward installation
- Designed for 3/8-inch I.D. return hose common on many power steering systems
- Compact 9-inch length fits tight engine bays where larger coolers will not
- Fixed 3/8-inch hose connection limits compatibility with systems using different hose sizes
- No adjustable fittings or adapters included for nonstandard plumbing
Verdict: A compact, aluminum inline cooler that reliably lowers power steering fluid temperature to help preserve system components.
6. Derale 13309 Power Steering Cooler Kit (Black)
| Model | Power Steering Cooler (-6AN) |
|---|---|
| Item model number | 13309 |
| Exterior | Painted |
The Derale 13309 is a small, four-pass power steering cooler kit designed to lower fluid temperatures using 1/2 inch copper tubing expanded into aluminum cooling fins and extruded plastic fin guards. It installs in-line with your power steering or auxiliary cooling circuit to improve heat dissipation under load or in towing and spirited driving. The painted finish and compact footprint make it easy to tuck into tight engine bays like the Scion tC without looking out of place. Practical features include the four-pass design for increased cooling efficiency and protective plastic fin guards to reduce debris damage. Limitations to note are its modest size and capacity compared with larger, heavier-duty coolers, so it is best for everyday drivers seeking better thermal control rather than heavy towing or extreme track use. Installation will require compatible AN fittings and basic plumbing skills or a shop visit.
Best for: Practical optimizers who want an affordable, space-efficient upgrade to lower power steering or auxiliary fluid temperatures in daily-driven Scion tC vehicles without overspending on heavy-duty gear.
Less Ideal for: Drivers who frequently tow heavy loads or push fluid temperatures to extreme limits should choose a larger, higher-capacity cooler designed for heavy-duty duty cycles.
- Four-pass cooler design improves fluid heat exchange compared with single-pass cores
- Copper tubing bonded to aluminum fins for effective thermal transfer
- Compact, painted unit fits tight engine bays common to compact cars
- Extruded plastic fin guards help protect fins from road debris
- Smaller capacity limits effectiveness for heavy towing or extreme performance use
- Requires compatible fittings and basic plumbing skills for installation
Verdict: A compact, budget-friendly four-pass cooler that delivers noticeable temperature control for everyday Scion tC driving without taking up much space.
Choosing the Right Infiniti Q50 Power Steering Cooler: Key Factors to Consider
Cooling Capacity
Cooling capacity determines how much heat the unit can remove from steering fluid during prolonged or heavy use. Higher capacity units typically use larger cores, more fin surface area, or multi-pass designs to increase heat transfer. This matters because inadequate cooling allows fluid temperatures to climb, which accelerates seal wear and reduces fluid life. Consider the operating conditions you expect; frequent spirited driving, towing, or hot-climate use benefits from higher-capacity coolers.
Cooling ratings are often expressed indirectly through core size and design rather than a single standardized number, so look for technical details about core construction and flow characteristics. Balance capacity with available space in the Infiniti Q50 engine bay to avoid fitment issues.
Material and Corrosion Resistance
Materials influence longevity when exposed to hot hydraulic fluid and road debris. Aluminum cores are common for their light weight and thermal conductivity, but coatings, anodizing, or stainless fittings increase resistance to corrosion. Poor material choices can lead to pitting, leaks, or reduced thermal performance over time.
Pay attention to the quality of hoses, clamps, and brazing or welds. Components that resist galvanic corrosion and maintain sealing surfaces under thermal cycling will reduce maintenance and extend service intervals.
Mounting and Fitment
How a cooler mounts in the Infiniti Q50 affects installation time and long-term reliability. Purpose-built brackets or Q50-specific mounting kits simplify installation and reduce the need for custom fabrication. A secure mount reduces vibration and the risk of chafing lines against sharp edges.
Consider whether the cooler requires removal of other components to fit, and how accessible it will be for future inspections. A compact, well-bracketed unit that places the core in a high-airflow location will usually perform better than a larger cooler that is poorly located.
Hose and Fitting Compatibility
Compatibility with existing power steering lines affects leak potential and installation complexity. Some coolers use universal barb fittings that require hose adapters, while others provide specific threaded fittings that match factory hoses. Mismatched fittings can increase installation time and the chance of leaks.
Look for kits that include quality hoses or adapters rated for power steering fluid temperatures and pressures. Consider whether additional clamps, unions, or banjo fittings are needed for a clean, secure connection on the Infiniti Q50.
Pressure Rating and Leak Resistance
The power steering system operates under pressure spikes during steering inputs, so coolers and connections must handle high hydraulic pressures. A higher pressure rating reduces the risk of hose swelling, fitting failure, or seal blowouts. Reliable sealing methods such as crimped hose ends, welded fittings, or properly rated O-rings improve leak resistance.
Check manufacturer specifications for maximum operating pressure and recommended service intervals. Components that show robust pressure handling will be safer for long-term use and better for maintaining system integrity.
Serviceability and Maintenance
Easy access for inspection and maintenance can extend the life of the power steering system. Coolers that allow cleaning of fins, straightforward hose replacement, or simple bypass for fluid changes reduce service complexity. Some designs permit isolation for flushing or replacement without draining the entire system.
Consider how often you are willing to perform maintenance and choose a design that matches your maintenance habits. Better serviceability reduces long-term ownership costs and helps preserve system performance.
How We Chose the Best Infiniti Q50 Power Steering Cooler
We selected products that address heat management and longevity specific to the Infiniti Q50 power steering system. Key evaluation criteria included measured cooling capacity under sustained loads, material durability against hydraulic fluids and road corrosion, mounting and fitment options for the Q50 engine bay, and ease of installation or serviceability. We also considered hose and fitting compatibility, pressure rating and leak resistance, and overall build quality including core design and fin density.Products were excluded if they lacked clear specifications for cooling performance, did not offer mounting guidance for the Infiniti Q50, or relied on unproven materials prone to corrosion. We filtered out universal kits that require extensive custom fabrication unless they provided clear Q50-compatible mounting hardware. The resulting list emphasizes units that balance effective heat dissipation, robust construction, and practical installation for this vehicle.
Our full evaluation process is outlined in our review methodology.
FAQ
Do I need a power steering cooler for my Infiniti Q50?
It depends on how you use the vehicle. If you drive hard, tow, or operate frequently in hot climates, a cooler often reduces fluid temperatures and can slow seal wear. For typical daily commuting in mild conditions, the factory system may be sufficient.
How difficult is it to install a power steering cooler on an Infiniti Q50?
Installation difficulty varies by kit. Q50-specific kits with brackets and fittings are usually straightforward for someone with basic mechanical skills. Universal kits can require more modification. Plan for time to route hoses securely and check for leaks after installation.
What maintenance does a steering fluid cooler require?
Maintenance is generally minimal. Periodic visual inspection for leaks, damaged fins, or loose fittings is recommended. If the cooler is in a dirty environment, occasional cleaning of external fins can help maintain airflow and cooling performance.
Will adding a cooler affect steering performance or feel?
A properly installed cooler should not change steering feel. The cooler simply lowers fluid temperature. However, poorly routed hoses or undersized fittings may introduce flow restrictions, so correct sizing and installation matter to avoid adverse effects.
Can a cooler prevent power steering overheating issues entirely?
A cooler can significantly reduce fluid temperatures and help mitigate overheating, but it is not a guaranteed fix for all causes. Underlying issues such as failing pumps, clogged lines, or low fluid should be diagnosed and addressed alongside adding a cooler.
Conclusion
Selecting a power steering cooler for the Infiniti Q50 means balancing cooling capacity, durable materials, and fitment that works in the vehicle engine bay. Prioritize units with proven heat dissipation, corrosion-resistant construction, and fittings that match the Q50 plumbing to minimize installation complexity.Keep in mind the tradeoffs between core size and available space, and choose a design that offers straightforward maintenance. Addressing installation quality and hose compatibility will maximize the cooler's benefits and help protect the steering system over time.
Explore More:
- Check out all Infiniti Q50 parts & accessories
- Explore Power Steering Coolers Maintenance & Repair Guides
- Explore Cooling System
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