Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
If you drive an Acura RDX and want to reduce steering-system wear, choosing the right power steering cooler can make a measurable difference in fluid temperature and component longevity. You should care about how well a cooler dissipates heat, how it fits the vehicle, and whether installation will be straightforward. This guide covers seven shortlisted power steering coolers selected for the Acura RDX. We evaluated cooling capacity and installation considerations, plus hose and fitting compatibility, to help you find options that suit daily driving, towing, or spirited use. Read on to see the top picks and what to consider before you buy.
Looking for other parts? See all Acura RDX parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Derale 13213 2-Pass Power Steering Cooler Kit |  |
| Best Quality Built to a higher standard if you want something more solid | Mishimoto Universal Transmission/Power Steering Cooler |  |
| Best Value The sweet spot between price and what you get | Hayden Automotive Power Steering Oil Cooler (Model 1012) |  |
| Best Budget The cheapest option that still gets the job done reliably | Derale 13309 Power Steering Cooler Kit (Black) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Hayden 1009 Power Steering Oil Cooler (9 inch) |  |
| Most Popular A crowd favorite that many people choose with confidence | Hayden Automotive 1011 Power Steering Oil Cooler |  |
| Best Seller A high-volume bestseller chosen again and again | Derale Series 7000 Power Steering Cooler Kit |  |
1. Derale 13213 2-Pass Power Steering Cooler Kit
| Model | 2-Pass Power Steering Cooler |
|---|---|
| Item model number | 13213 |
| Exterior | Painted |
| Inlet size | 11/32 inch hose barb |
The Derale 13213 is a small two-pass power steering cooler kit intended to reduce heat in the steering system and extend pump and seal life. It uses 1/2 inch copper tubing expanded into aluminum cooling fins with 11/32 inch hose barb inlets, and mounts easily in front of the radiator or intercooler where it sees direct airflow. In practice this cooler provides measurable temperature reduction for vehicles that run hotter steering fluid under towing, spirited driving, or forced-induction upgrades. Its light painted housing and simple barb fittings make it straightforward to install with basic hand tools, though you may need to buy matching hose sizes and extra clamps. The unit is compact and versatile for tight engine bays, but because it relies on external airflow and barbed hose connections it is not a direct plug-and-play OEM replacement and may require hose adapters or custom mounting for some Acura RDX model years.
Best for: Balanced buyers who want a reliable aftermarket cooler to lower power steering fluid temperatures for everyday driving and occasional towing or spirited use without overcomplicating installation.
Less Ideal for: Drivers seeking a direct factory-form replacement or those who need maximum cooling at idle should consider vehicle-specific or larger-capacity cooling solutions instead.
- Two-pass design with copper tubing and aluminum fins for efficient heat dissipation
- Compact and lightweight so it fits in tight engine bays and mounts to grille or radiator supports
- Painted finish resists corrosion and presents a clean appearance
- Simple barb inlets and basic hardware make installation possible with common tools
- Uses hose barb fittings so you may need to buy adapter hoses or clamps for Acura RDX lines
- Performance depends on external airflow so cooling is reduced at low vehicle speeds
Verdict: A compact, effective two-pass cooler that lowers steering fluid temperature and prolongs pump life for a broad range of driving conditions.
2. Mishimoto Universal Transmission/Power Steering Cooler
| Material Type | Aluminum |
|---|---|
| Item Length | 15.5 Inches |
| Nominal Wall Thickness | 0.75 inches |
| Included Components | Cooler, Hose, Plastic Ties, Foam Pads, O-ring clamps, Drain cock connector |
This Mishimoto universal cooler is a small, all-aluminum heat exchanger intended to lower fluid temperatures for automatic transmissions, power steering racks, or engine oil when added to an aftermarket cooling system. It mounts universally to a radiator or support using the supplied ties and foam pads and connects with the included 3/8" push-on fittings and hoses, making it straightforward to route on tight engine bays like the Acura RDX. The core and 3/4" thickness provide a balance of cooling area and low airflow restriction so it will help prevent overheating during towing, spirited driving, or repeated steep-grade descents. Included hardware and a lifetime warranty are practical pluses, though the kit can include minimal hose length and the mounting ties are basic so some trimming or alternate fasteners may be needed for an optimal fit in the RDX’s engine compartment. This is a compact, durable upgrade for owners who need extra fluid cooling without a vehicle-specific cooler assembly.
Best for: Performance-oriented owners seeking a durable, compact add-on cooler to keep transmission or power steering fluid temperatures down during spirited driving and towing on an Acura RDX.
Less Ideal for: Owners who prefer a vehicle-specific plug-and-play cooler or who want a larger, multi-pass cooler designed for extreme-duty towing should consider purpose-built, model-specific options instead.
- All-aluminum construction for good heat transfer and corrosion resistance
- Universal mounting and included pads/ties simplify installation on aftermarket radiators
- 3/8" push-on fittings allow quick hose connections without special adapters
- Compact footprint fits into tight engine bays common on crossover vehicles
- Kit may include limited hose length and only one rubber hose in some packages
- Basic mounting ties may require modification or stronger fasteners for secure long-term mounting
Verdict: A compact, all-aluminum universal cooler that gives Acura RDX owners an effective way to reduce transmission or power steering fluid temps without replacing the factory radiator.
3. Hayden Automotive Power Steering Oil Cooler (Model 1012)
| Liquid Volume | 1.87 Liters |
|---|---|
| Upper Temperature Rating | 257 Degrees Fahrenheit |
| SAE J300 Viscosity Grade | 20W-50 |
| Item Form | Oil |
The Hayden Automotive 1012 power steering oil cooler installs inline to reduce operating temperature of power steering fluid and help prolong the life of the pump and hoses. It is factory tested and intended for straightforward installation in vehicles that accept an inline cooler; typical use is on street-driven cars where the steering system runs warm from sustained low-speed maneuvering or towing. The cooler is supplied as a single unit and uses vehicle fluid lines for connection, so it adds cooling capacity without complex plumbing. Practical benefits include lower fluid temperatures under load and a simple plug-in replacement-style fit for compatible setups. Limitations are that the listing provides minimal fitment guidance specific to the Scion tC, and some installations may require brackets or hose adapters not included. Buyers should verify hose sizing and mounting options before purchase.
Best for: Budget-conscious owners seeking an affordable way to reduce steering fluid temperatures and extend component life without major system changes.
Less Ideal for: Owners who need guaranteed vehicle-specific fitment, included mounting hardware, or a full kit with hoses and fittings should consider a complete cooler kit or professional-installed option.
- Factory-tested unit for consistent performance
- Designed to lower power steering fluid temperature and extend component life
- Single-unit supply simplifies installation for compatible inline setups
- No vehicle-specific fitment information or hardware such as mounting brackets or hose adapters included
Verdict: A low-cost, factory-tested inline cooler that helps lower steering fluid temperatures and protect pump and hoses.
4. 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.
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. 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.
7. 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.
Choosing the Right Acura RDX Power Steering Cooler: Key Factors to Consider
Cooling Capacity
How much heat a cooler can dissipate is the primary function of the component. Higher cooling capacity reduces fluid temperatures during prolonged high loads, which can lessen wear on seals, pumps, and rack components.
Cooling performance is influenced by core surface area, fin density, and flow path. Choose a cooler whose published thermal ratings or core size align with your driving profile. For towing or repeated steep climbs, prioritize capacity over compact size; for light urban driving, moderate capacity may be sufficient.
Fitment And Mounting
A cooler must fit in the available space in the Acura RDX engine bay without interfering with other systems. Consider bracket design, mounting points, and clearance to nearby components when evaluating compatibility.
Mounting that secures the cooler away from excessive heat sources and vibration will improve longevity. Look for kits that provide vehicle-specific brackets or offer flexible mounting options that match the RDX chassis layout to simplify installation and reduce modification needs.
Hose And Fitting Compatibility
The connections between the cooler and the hydraulic system must match the RDX steering lines to avoid leaks or pressure loss. Proper hose diameter, length, and fitting type are important to maintain correct flow and system pressure.
Kits that include hoses and fittings sized for the vehicle reduce the risk of mismatched parts and simplify installation. If adapting fittings, select high-quality, pressure-rated hoses and ensure secure clamps or crimp fittings to meet the system's operating pressures.
Material Quality And Corrosion Resistance
Materials affect durability and heat transfer. Aluminum cores are common for their balance of weight and thermal conductivity, while brass or stainless fittings offer better corrosion resistance in aggressive environments.
Consider coatings and the quality of welds or brazing that help prevent leaks over time. For regions with road salt or high humidity, prioritize corrosion-resistant finishes and robust construction to extend service life.
Installation Complexity
Installation difficulty affects cost, time, and the likelihood of a correct fit. Full kits with vehicle-specific brackets, pre-bent lines, and clear instructions will be faster and less error-prone to install on an Acura RDX.
If professional installation is not planned, choose a solution with straightforward hose routing, accessible mounting points, and included hardware. More complex systems may require jack stands, line bleeding, or temporary disconnection of other components, which increases labor and potential for error.
Serviceability And Replacement Parts
Ease of maintenance matters because coolers and hoses can require inspection or replacement over time. Replaceable components, such as O-rings, hose ends, or brackets, make future service simpler and less costly.
Availability of compatible replacement hoses and fittings that match the RDX will reduce downtime. Consider whether the cooler can be flushed or repaired in place and if replacement parts are commonly available from suppliers.
How We Chose the Best Acura RDX Power Steering Cooler
To assemble this list we focused on the attributes that matter most for Acura RDX steering systems. Key evaluation criteria included thermal performance under sustained load, chassis- and engine-bay fitment for the RDX, quality of hose and fitting materials, and the availability of a complete mounting and hose kit to simplify installation. We also considered durability factors such as corrosion-resistant construction and the effectiveness of internal flow design to avoid pressure drops. Excluded from consideration were universal products lacking clear fitment guidance for the Acura RDX and any units that required extensive vehicle modification. We prioritized items that provide a balance of measurable cooling capacity and straightforward installation while remaining compatible with the RDX hydraulic line routing. The final shortlist reflects those priorities and is tailored to typical driving, towing, and performance needs rather than extreme racing applications.
Our full evaluation process is outlined in our review methodology.
FAQ
Do I need a power steering cooler for my Acura RDX?
You may benefit from a cooler if you regularly tow, drive in hilly terrain, or notice elevated steering fluid temperatures. For routine city driving a cooler is often optional, but it can reduce wear in higher-stress use by lowering operating temperatures.
Where is the best place to mount a power steering cooler in an Acura RDX?
Mounting ahead of the radiator or in an airflow area of the engine bay usually provides the best cooling. The exact location should avoid contact with exhaust components and allow secure brackets and adequate clearance for hoses and fittings.
Can I install a power steering cooler myself?
Many coolers come in kits designed for straightforward installation, and a mechanically inclined person can complete the job with basic tools. However, proper hose routing, secure fittings, and bleeding the steering system require care, so consider professional installation if you are not comfortable with those tasks.
Will a steering fluid cooler affect steering feel?
A correctly sized and installed cooler should not noticeably change steering feel. Improper hose sizing or excessive length can introduce pressure drops, so ensure fittings and hoses are compatible with the Acura RDX hydraulic system to maintain normal performance.
How do I know if my power steering is overheating?
Signs include unusually warm fluid, a burning odor, reduced steering responsiveness, or noisy pump operation under load. Regular inspection of fluid condition and temperature during demanding drives can help identify overheating before damage occurs.
Conclusion
Selecting the right power steering cooler for an Acura RDX means balancing cooling capacity, fitment, and installation complexity. Prioritize a unit that offers sufficient heat dissipation for your driving conditions while providing secure mounting and compatible hoses. Keep in mind the tradeoffs between maximum cooling and ease of installation. For most drivers, a well-matched cooler that installs cleanly and uses quality fittings will extend component life and reduce the risk of overheating without introducing new maintenance burdens.
Explore More:
- Check out all Acura RDX parts & accessories
- Explore Power Steering Coolers Maintenance & Repair Guides
- Explore Cooling System
- Browse all Auto Parts
