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If your Scion xB is used for towing, hill driving, or frequent stop-and-go traffic, high steering fluid temperatures can accelerate wear and reduce steering feel. Choosing the right power steering cooler helps keep fluid temperatures in a safe range, which preserves pump life and maintains consistent steering performance. This guide shortlists the top options for the Scion xB, focusing on cooling effectiveness, fitment simplicity, and installation requirements. Below we summarize the selection and what to expect when fitting a cooler to your vehicle.
Looking for other parts? See all Scion xB 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 | Edelmann Elite Power Steering Cooler with Brackets (Model 59001B) |  |
| Best Value The sweet spot between price and what you get | Hayden Automotive 1011 Power Steering Oil Cooler |  |
| Best Budget The cheapest option that still gets the job done reliably | Hayden 1009 Power Steering Oil Cooler (9 inch) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Derale Series 7000 Power Steering Cooler Kit |  |
| Most Popular A crowd favorite that many people choose with confidence | Derale 13200 Power Steering Cooler Kit |  |
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. Edelmann Elite Power Steering Cooler with Brackets (Model 59001B)
| Brand | Edelmann |
|---|---|
| Model | 59001B |
| Exterior | Painted |
| Manufacturer | Plews & Edelmann |
| Item Weight | 2.4 pounds |
The Edelmann Elite power steering cooler is a universal-style inline cooler built to lower hydraulic temperatures and extend the life of pumps, hoses, seals, and fluid. It installs with the supplied brackets and is intended for demanding duty where higher fluid heat is common, such as vehicles used for towing, oversized tires, or spirited driving. The cooler uses high-temperature furnace brazing and painted exterior finishing for corrosion resistance and durability relative to typical replacement units. In real-world use it helps maintain steering assist performance by shedding excess heat during long periods of low-speed steering or repeated high-load maneuvers, which reduces the risk of premature component wear. Because it is a universal cooler rather than a vehicle-specific OEM part, fitment on a Scion xB will require confirming line routing and may need basic adapter fittings or custom mounting to the vehicle's chassis. The unit is compact and lightweight but buyers should plan installation time and check hose connection sizes before ordering.
Best for: Performance-oriented drivers who prioritize component longevity and consistent steering performance under demanding use and want a high-quality aftermarket cooler to prevent heat-related steering issues.
Less Ideal for: Buyers wanting a direct factory-style drop-in part or a no-modification installation solution for a Scion xB should consider vehicle-specific options instead.
- Designed to reduce power steering fluid temperatures for longer component life
- Manufactured with high-temperature furnace brazing for improved durability
- Painted exterior finish for added corrosion resistance
- Includes mounting brackets for easier installation
- Universal fit requires checking hose sizes and may need adapters or custom mounting for Scion xB
Verdict: A durable, furnace-brazed power steering cooler built to lower system temps and protect steering components during heavy use.
3. 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.
4. 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.
5. 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.
6. 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.
Choosing the Right Scion xB Power Steering Cooler: Key Factors to Consider
Cooling Capacity
Cooling capacity determines how much heat a cooler can remove from the steering fluid during sustained or heavy use. A higher capacity cooler will keep fluid temperatures lower during towing, long climbs, or heavy traffic, reducing the rate of fluid degradation and minimizing thermal stress on the pump and seals. Cooling capacity is often influenced by core size, fin density, and airflow across the unit. When assessing capacity, consider the driving conditions you most frequently encounter. For everyday city driving a moderate-capacity cooler may be sufficient, while more demanding duty requires a larger or higher-efficiency core.
Fitment and Hose Compatibility
Proper fitment ensures the cooler integrates cleanly with existing lines without causing strain or excessive bends in hoses. Check that the cooler's inlet and outlet fittings and included hose lengths match the Scion xB steering hose layout to avoid fabricating lines. Good compatibility reduces leak risk and simplifies routing to avoid hot exhaust components or sharp edges. Properly matched fittings also make future maintenance easier, because standard connections allow quick disassembly and replacement of hoses or the cooler itself.
Mounting Location and Hardware
Where and how the cooler mounts affects both cooling effectiveness and long-term durability. A location with steady airflow, such as ahead of the radiator or in an unobstructed area of the front bumper, improves heat rejection. Mounting hardware should be robust and vibration-resistant to prevent fatigue in brackets or fittings. Consider how the chosen mounting location impacts access for inspection and service. A well-designed mount will protect the cooler from road debris while keeping it reachable for hose checks and cleaning.
Materials and Corrosion Resistance
Materials affect both thermal performance and longevity in the automotive environment. Aluminum cores are common for their light weight and good heat conduction, but coatings and anodizing help resist corrosion. Stainless steel fittings and hardware offer superior corrosion resistance in wet or salty conditions. Choose materials and finishes that match the climate and exposure your Scion xB will face to avoid premature failure. Durable materials also retain structural integrity under vibration and thermal cycling.
Installation Complexity
Installation complexity influences the time and tools required as well as whether professional help is advisable. Some kits are designed for bolt-on installation with clamps and preformed hoses, while others require flaring, cutting, or custom brackets. Consider whether you are comfortable routing lines near other engine components and performing fluid evacuation and bleeding procedures. Lower-complexity installations reduce the chance of leaks and typically shorten downtime for the vehicle.
Serviceability and Maintenance
Serviceability covers how easy it is to inspect, clean, and replace the cooler or related hoses over time. Units with accessible fittings and standard hose connections simplify routine checks and repairs. The ability to flush or replace the cooler without disturbing other steering components can lower maintenance costs and downtime. Also consider whether replacement parts or hoses are commonly available, because that affects long-term ownership convenience.
How We Chose the Best Scion xB Power Steering Cooler
We prioritized items that deliver measurable reductions in steering fluid temperature and that are designed for straightforward integration with the Scion xB hydraulic steering system. Key evaluation criteria included cooling capacity under sustained load, hose and fitting compatibility for clean routing, ease of installation and required mounting hardware, corrosion resistance and materials suited to under-hood exposure, and serviceability including accessible hose connections and replaceable components.We excluded products that lacked clear compatibility information or that required extensive permanent modifications to the steering system. We also filtered out coolers with materials or finishes prone to rapid deterioration in automotive environments. The resulting shortlist focuses on units that balance effective heat rejection with practical installation and durability for typical Scion xB owners.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know if my Scion xB needs a power steering cooler?
Signs that a cooler may help include unusually warm steering fluid, faded steering response after prolonged driving, or a history of heavy loading such as towing or steep hill use. Elevated fluid temperature accelerates wear and can lead to pump noise or seal issues. If you regularly expose the vehicle to sustained heavy loads, a cooler is often a prudent preventative measure.
Can I install a steering fluid cooler myself?
Many coolers are designed for do-it-yourself installation and include hose fittings and brackets, but the job requires basic mechanical skills. You will need to drain and capture steering fluid, route hoses safely away from heat sources, and properly bleed the system after installation. If you are uncomfortable working around hydraulic lines or performing the bleeding procedure, professional installation reduces risk of leaks or air in the system.
Will adding a cooler affect steering feel or system pressure?
A properly sized cooler should not noticeably change steering feel or operating pressure. Coolers are passive heat exchangers and do not alter hydraulic geometry when installed correctly. However, poorly matched hose routing or restrictive fittings can introduce unwanted pressure drop, so it is important to use compatible hoses and fittings designed for the system.
Where is the best place to mount a power steering cooler?
The best mounting spots are locations with consistent airflow and protection from road debris, such as ahead of the radiator or behind the grille where air passes freely. Avoid routing near high-temperature components like the exhaust manifold. Secure mounting that minimizes vibration and provides easy access for inspection will extend the life and performance of the cooler.
How often should I inspect or maintain a power steering cooler?
Inspect the cooler and hoses at regular service intervals or if you notice changes in steering behavior. Look for leaks, loose fittings, or damaged fins and ensure mounting hardware remains secure. If you operate in harsh climates or on salted roads, check corrosion-prone areas more frequently. Periodic inspections help catch issues before they affect steering reliability.
Conclusion
When choosing a power steering cooler for a Scion xB, prioritize cooling capacity that matches your driving demands, straightforward fitment with compatible hoses, and durable materials that withstand under-hood exposure. Balance ease of installation against long-term serviceability to ensure the cooler remains effective and accessible.A well-chosen cooler reduces fluid temperatures, protects the pump and seals, and preserves steering performance during demanding use. Focus on the factors discussed here to select an option that meets your driving conditions and maintenance preferences.
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