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Replacing the radiator on your Scion xB matters because the cooling system directly affects engine longevity and day-to-day reliability. A properly matched radiator reduces overheating risk, minimizes coolant loss, and restores steady operating temperatures so you can drive with confidence. This guide covers seven shortlisted radiators chosen for their fitment, cooling capacity, and durability. We evaluated each option against core criteria like heat dissipation and build quality to help you find a suitable replacement. Read on for practical notes that lead into the top picks.
Looking for other parts? See all Scion xB parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | SCITOO Front Radiator Assembly for Scion xD (2008–2014) |  |
| Most Popular A crowd favorite that many people choose with confidence | TRQ Radiator, 1-Row Aluminum Core, Direct Fit for Scion xA/xB and Toyota Echo |  |
| Best Quality Built to a higher standard if you want something more solid | TYG Radiator Cooling Fan Assembly for 2008–2015 Scion xB with Upper Shroud |  |
| Best Budget The cheapest option that still gets the job done reliably | NewYall Radiator Coolant Reservoir with Cap for Scion xB / Toyota Corolla iM |  |
| Most Sold A high-volume bestseller chosen again and again | TRQ Dual Radiator & Condenser Fan Assembly for Scion xB (2008–2015) |  |
| Best Value for Money The sweet spot between price and what you get | PHILTOP CU2305 Radiator — Direct Replacement for 2004–2006 Scion xA/xB and 2000–2005 Echo |  |
| Best Overall The best all-around choice for most situations | DNA Motoring OEM-RA-13106 Front Aluminum Radiator |  |
1. SCITOO Front Radiator Assembly for Scion xD (2008–2014)
| Position | Front |
|---|---|
| Row Count | 1 Row |
| Transmission Oil Cooler Included | Yes |
| OEM Part Number | 2890 |
This SCITOO radiator is a direct-fit replacement intended for the Scion xD (2008–2014) and replaces several common part numbers. It functions as the vehicle’s heat exchanger and includes a built-in transmission oil cooler, so it handles engine cooling and helps maintain automatic transmission temperatures without separate plumbing. Installation is straightforward for a technician or a competent DIYer because the unit is model-specific and comes with factory-style mounting locations. The single-row aluminum core keeps the assembly compact while providing adequate cooling for everyday driving and light towing. Customers report good fit and no leaks when installed correctly, and the condenser and mounting tabs generally align with factory points. Expect the benefit of restoring proper cooling at a lower cost than dealer parts, but be aware the one-row core is less robust for aggressive performance driving or heavy-duty use compared with multi-row aftermarket radiators. Some buyers note minor fitment adjustments for clips or condenser positioning during installation.
Best for: Reliability-focused buyers who prioritize restoring original cooling function with a straightforward, model-specific replacement that gets the car back on the road with minimal fuss.
Less Ideal for: Drivers who use their Scion in high-load performance situations or need maximum cooling capacity should consider multi-row performance radiators instead.
- Direct-fit design for Scion xD model years 2008–2014 for straightforward replacement
- Includes an integrated transmission oil cooler to simplify installation and service
- Aluminum single-row core offers a lightweight, corrosion-resistant cooling solution
- Many users report good fitment and leak-free performance after installation
- Single-row core provides less cooling margin than multi-row performance radiators
- Some condenser clips or tabs may require minor adjustment during installation
Verdict A budget-friendly, model-specific radiator that restores factory cooling for the Scion xD but choose a multi-row unit if you need extra cooling capacity.
2. TRQ Radiator, 1-Row Aluminum Core, Direct Fit for Scion xA/xB and Toyota Echo
| Core Row Quantity | 1 |
|---|---|
| Core Material | Aluminum |
| Transmission Oil Cooler Type | Concentric |
| Outlet Diameter | 1.25 in |
| Inlet Location | Top Right |
This TRQ radiator is a direct-replacement cooling unit for Scion xA and xB (2004–2006) and Toyota Echo (2000–2005). It uses a single-row aluminum core with a plastic tank and includes an internal concentric transmission oil cooler, so it handles both engine and automatic transmission cooling without extra parts. Typical use is a DIY swap to replace a leaking or damaged factory radiator; TRQ supplies a pre-assembled unit that keeps original mounting points and inlet/outlet locations, which speeds installation and reduces the chance of modification. Practical benefits include a factory-style fit, improved corrosion resistance from the aluminum core, and an included transmission cooler so you do not need a separate component. Limitations to note are the single-row core design, which is more compact but offers less thermal capacity than multi-row radiators, and the plastic tanks that can be more susceptible to damage than all-metal alternatives. A few customer reports show occasional shipping damage or cracked tanks, so inspect the unit on receipt before installation.
Best for: Convenience-driven buyers who want a straightforward, ready-to-install replacement that minimizes shop time and keeps the repair simple and fast.
Less Ideal for: Drivers who need maximum cooling capacity for heavy-duty towing, track use, or who prefer metal-tank radiators for long-term durability should consider higher-capacity or all-metal options instead.
- Direct-fit design for Scion xA/xB and Toyota Echo simplifies DIY replacement
- Aluminum core improves heat transfer and corrosion resistance compared with older cores
- Integrated concentric transmission oil cooler removes need for a separate cooler
- Pre-assembled mounting points and standard inlet/outlet locations speed installation
- Single-row core provides less cooling capacity than multi-row radiators
- Plastic tanks can crack under impact or age, unlike full-metal radiators
Verdict A convenient, direct-fit aluminum-core radiator with an integrated transmission cooler that is ideal for quick DIY replacements but is limited by its single-row core and plastic tanks.
3. TYG Radiator Cooling Fan Assembly for 2008–2015 Scion xB with Upper Shroud
| Power Connector Type | 2-Pin |
|---|---|
| Voltage | 12 Volts |
| Wattage | 60 watts |
| Maximum Rotational Speed | 1830 RPM |
| Noise Level | 49 Decibels |
This TYG radiator cooling fan assembly is a direct replacement designed to restore the Scion xB's factory cooling capability. It installs with the upper shroud included and uses the correct 2-pin connector so it plugs into the stock harness without splicing. The fan is a motor-and-blade assembly built from metal and plastic, rated at 12 volts and about 60 watts with a tested top speed near 1830 RPM, which translates to consistent airflow for highway and stop-and-go driving and added A/C load. Balanced blades and a tested noise level around 49 dB mean the unit runs relatively quietly compared with many budget aftermarket fans. Because it is made to match factory mounting points, installation is straightforward for a technician or DIYer familiar with cooling-system work. Buyers should confirm the OEM reference numbers and connector count before ordering because fitment is vehicle-specific and some users report isolated quality-control issues like loose fasteners. The manufacturer offers a one-year warranty for peace of mind.
Best for: Performance-oriented owners who prioritize restoring factory cooling performance and quiet, dependable operation after a failed fan. Ideal for drivers who want a direct-fit replacement that maintains the Scion xB's thermal management under heavier loads.
Less Ideal for: Those who need a universal or multi-vehicle fan solution or buyers unwilling to verify OEM reference numbers and connector fit before purchase should consider other options.
- Vehicle-specific design matches factory mounting points for a predictable fit on 2008–2015 Scion xB.
- Includes upper shroud and uses the correct 2-pin connector for straightforward plug-and-play installation.
- Balanced blades and tested motor design aim to reduce vibration and keep operating noise near 49 dB.
- Motor rated at 12 V and 60 W with maximum speed around 1830 RPM to provide reliable radiator airflow under load.
- Some customers reported isolated quality-control issues such as loose hardware that require inspection before installation.
- Not a universal unit so incorrect OEM reference or connector mismatch will prevent fitment.
Verdict A factory-replacement style cooling fan built to restore reliable, relatively quiet cooling on 2008–2015 Scion xB models, provided you confirm fitment and inspect fasteners before install.
4. NewYall Radiator Coolant Reservoir with Cap for Scion xB / Toyota Corolla iM
| Compatible with Vehicle Type | Car |
|---|---|
| Fuel Type | Gasoline |
| Fit Type | Vehicle Specific |
| Material Type | Plastic |
This NewYall coolant overflow reservoir is a direct-fit replacement designed for the Scion xB (2008–2015) and closely related Toyota iM/Corolla iM models. It installs in place of the original tank and includes the cap so you can restore a leak-free expansion system without modifying hoses or mounts. Made from molded plastic, it serves the same purpose as the factory unit: capture excess coolant, maintain system pressure at low cost, and provide a visible level for easy checks. In practice the part's fitment reports are positive and buyers note straightforward bolt-in installation and a factory-like fit. The plastic construction keeps weight and cost down, but customers should be aware that longevity can vary versus higher-end OEM replacements and repeated exposure to extreme heat or coolant additives may accelerate wear. This is a practical, inexpensive repair option if you need a quick replacement that matches factory fit and function, but those seeking extended durability may prefer a higher-grade aftermarket or dealer part.
Best for: Budget-conscious owners looking for an inexpensive, ready-to-install replacement to restore coolant containment and system function without extra work or parts.
Less Ideal for: Owners planning to keep a high-mileage vehicle long-term or those who prioritize maximum durability and upgraded materials should consider premium aftermarket or dealer parts instead.
- Vehicle-specific fit for Scion xB and Toyota iM so no modification needed
- Includes cap so system is ready to seal and hold pressure after install
- Molded plastic construction keeps it lightweight and budget-friendly
- Reports of straightforward bolt-in installation and factory-like fit
- Plastic construction may not match long-term durability of higher-end replacements
- Limited information on material reinforcement or improved heat resistance
Verdict A low-cost, direct-fit coolant reservoir that restores factory-style function for Scion xB owners but with the usual durability limits of a budget plastic replacement.
5. TRQ Dual Radiator & Condenser Fan Assembly for Scion xB (2008–2015)
| Power Connector Type | 3-Pin |
|---|---|
| Cooling Method | Air |
| Compatible Devices | Radiator |
| Maximum Rotational Speed | 1500 RPM |
This TRQ dual fan assembly replaces both the radiator and condenser fans in 2008–2015 Scion xB applications, delivering a ready-to-install, pre-assembled unit that restores factory-style cooling and condenser airflow. It is typically used when the factory fan pack fails, causes overheating, or when the AC condenser fan performance drops; installation is intended to be straightforward thanks to the assembled shroud and factory-style mount points. Notable features include a 3-pin power connector for electrical hookup and a maximum motor speed rating of 1500 RPM, plus a mixed metal and plastic construction that balances durability with weight. In practice the assembly offers fast fitment and consistent airflow for everyday driving and heavier city use where cooling demand is higher. Some users report long-term durability concerns with plastic support points, so while many buyers get reliable service, expect to monitor plastic mounting areas over time. TRQ provides installation videos and a manufacturer warranty to support DIY installers and risk-averse buyers.
Best for: Risk-averse mainstream buyers who prioritize a direct-fit, largely plug-and-play replacement that minimizes installation uncertainty and gets a Scion xB back on the road quickly.
Less Ideal for: Drivers seeking a heavy-duty or fully metal aftermarket cooling solution for extreme use should consider more robust performance-oriented assemblies instead.
- Pre-assembled dual fan and shroud for faster, simpler installation
- Designed as a direct replacement for 2008–2015 Scion xB to match factory mount points
- 3-pin electrical connector compatible with factory wiring for straightforward hookup
- Manufacturer provides DIY installation videos to guide repairs
- Some customers reported plastic support pieces breaking after months of use, indicating potential long-term durability issues
- Mixed metal and plastic construction means certain components may be less durable than all-metal alternatives
Verdict A convenient, direct-fit dual fan assembly that restores cooling for 2008–2015 Scion xB models but watch plastic mounting points for long-term durability.
6. PHILTOP CU2305 Radiator — Direct Replacement for 2004–2006 Scion xA/xB and 2000–2005 Echo
| Vehicle fitment | 2004–2006 Scion xA/xB; 2000–2005 Echo |
|---|---|
| Core material | High-density aluminum core |
| Fit type | Direct bolt-on replacement |
| Model | CU2305 |
This PHILTOP CU2305 radiator is a direct-replacement cooling unit for Scion xA and xB (2004–2006) and Echo (2000–2005). It uses a high-density aluminum core with multi-layer cooling fins to improve heat dissipation and help the engine maintain correct operating temperature. The unit is supplied as a bolt-on replacement designed to match factory mounting points so installation is straightforward and does not require drilling or modification. The radiator carries multiple OEM part number matches for easy cross-referencing and the listing notes an industry certification for manufacturing quality. In practice this means a practical, budget-friendly upgrade for a tired or leaking factory radiator that restores cooling performance. Expect solid fitment for the specified Scion models, although buyers should verify bracket dimensions against their car since some users report checking mounts closely. This radiator is a sensible option for routine replacement but not a performance aftermarket core for heavy-duty towing or racing use.
Best for: Practical optimizers who want a cost-conscious, factory-style replacement that restores reliable cooling without fuss and minimizes time in the shop.
Less Ideal for: Drivers seeking a high-performance, heavy-duty cooling upgrade for racing, towing, or modified engines should consider purpose-built performance radiators instead.
- Direct bolt-on replacement that uses factory-style mounting for straightforward installation
- High-density aluminum core with multi-layer fins for improved heat dissipation
- Matches multiple OEM part numbers for easier fit verification and parts cross-reference
- IATF16957 certification noted, indicating factory production quality controls
- Not engineered as a heavy-duty or performance racing radiator
- Some users recommend double-checking bracket dimensions for exact fit on all vehicles
Verdict A budget-friendly, factory-style replacement radiator that restores reliable cooling for specified Scion models but is not intended for high-performance use.
7. DNA Motoring OEM-RA-13106 Front Aluminum Radiator
| Fitment | Compatible with select Scion xB models |
|---|---|
| Core Material | T-6061 Aluminum |
| Position | Front |
This DNA Motoring OEM-RA-13106 radiator is a bolt-in, front-position replacement that restores the engine cooling system for compatible Scion xB applications. It pairs a full T-6061 aluminum core with ABS end tanks to provide improved heat dissipation over aging factory units, and it includes a built-in transmission cooler configuration where applicable. Typical use is a like-for-like replacement during radiator failure or as a preventative refresh; professional installation is recommended because it is designed for factory-style mounting and hose connections. Buyers will appreciate the advertised improved cooling efficiency and the lightweight construction that makes handling and installation easier. Some customers report excellent fit and leak-free performance, while a minority encountered cap fit or leak issues, so verify cap compatibility and inspect seams after installation. If you need a radiator that aims to match factory fitment and enhance cooling capacity without modifying mounting points, this unit delivers practical value for a broad range of repair scenarios on the Scion xB.
Best for: A balanced all-round buyer who wants a reliable, factory-style radiator replacement for routine maintenance or to fix a failed unit on a Scion xB without aftermarket modification.
Less Ideal for: Not a good choice for owners seeking a performance racing radiator or those who need a custom cooling solution with altered mounting or plumbing.
- Full T-6061 aluminum core for better heat dissipation compared with older radiators
- Factory-style bolt-on mounting for straightforward replacement
- Lightweight construction eases handling during installation
- Some reported instances of leaks or radiator cap fitment problems requiring additional adjustment
- Includes a transmission cooler in some configurations which can change coolant capacity compared with the original layout
Verdict A practical, factory-style aluminum replacement that upgrades cooling for compatible Scion xB models while keeping installation simple, but check cap fit and inspect for leaks after installation.
Choosing the Right Scion xB Radiator: Key Factors to Consider
Cooling Capacity
Cooling capacity determines how effectively a radiator removes heat from the engine coolant. For daily driving and occasional heavy use, a radiator with sufficient core area and fin density will lower coolant temperatures more consistently.
Higher cooling capacity matters when you encounter traffic, towing, or hot ambient temperatures because it reduces the chance of the engine entering an overheating state. Look for specifications that describe core size and heat exchange efficiency, since those directly affect temperature control under load.
Fitment and Compatibility
Correct fitment ensures mounting points, hose connections, and transmission cooler ports (if present) align without modification. Proper compatibility saves time and prevents leaks or stress on hoses and brackets.
A radiator designed for the Scion xB should match original inlet and outlet locations and overall dimensions. Choosing a unit with documented vehicle fitment reduces the risk of additional labor or custom adapters during installation.
Material and Construction
Materials such as aluminum cores with durable end tanks typically offer a good balance of heat transfer and corrosion resistance. Brazed joints and reinforced tanks resist vibration and temperature cycling better than cheaper assemblies.
Construction quality impacts longevity and leak resistance. Look for radiators with robust welds or brazing, high-quality fins, and corrosion-resistant coatings. These details influence how long a radiator will perform before requiring repair or replacement.
Corrosion Resistance and Longevity
Exposure to coolant, road salts, and temperature cycles promotes corrosion over time. Radiators with protective coatings, compatible alloys, and proper sealing are less likely to develop pinhole leaks or degraded performance.
Prioritizing corrosion resistance helps extend service intervals and reduces the chance of coolant contamination. Consider long-term durability as part of the buying decision, especially if you drive in humid or salty environments.
Ease of Installation
Installation considerations include how easily the radiator can be accessed, whether mounting hardware is included, and if hose and sensor connections are straightforward. A design that mirrors original mounting geometry simplifies DIY installation and reduces labor time at a shop.
If you plan to replace the radiator yourself, check whether the product comes with clear instructions and necessary fittings. Ease of installation also affects the likelihood of correct sealing and long-term reliability after the job is completed.
Serviceability and Maintenance
Serviceability covers how simple it is to inspect, flush, or repair the radiator if issues arise. Features like accessible drain plugs, standard hose sizes, and removable shrouds can make maintenance easier and less time-consuming.
Choosing a radiator that supports routine maintenance tasks—such as coolant flushing and inspecting for leaks—reduces overall ownership hassle and helps you address early warning signs before they become major failures.
FAQ
How do I know if my Scion xB radiator needs replacement?
Common signs include persistent overheating, visible coolant leaks under the vehicle, discolored or rusty coolant, and low coolant levels without obvious external leaks. You may also notice steam from the engine bay or a temperature gauge that runs higher than normal. When these symptoms appear, inspecting the radiator for external damage and testing for internal blockages is a practical next step.
Can I install a replacement radiator myself?
Many owners can handle replacement with basic mechanical skills and standard tools, because radiators typically bolt into existing mounts and use factory hoses. Be sure to drain coolant safely, note hose and sensor locations, and follow a stepwise procedure to avoid introducing air into the cooling system. If you are unsure about any step, professional installation avoids potential mistakes.
Should I choose OEM or aftermarket radiators for the Scion xB?
OEM units match factory fit and specifications closely, which simplifies installation and compatibility. Quality aftermarket radiators can offer comparable performance and sometimes improved features like thicker cores or enhanced corrosion protection. The best choice depends on your priorities for exact fit, materials, and long-term durability.
How important is a coolant flush when replacing the radiator?
Flushing the cooling system is recommended because it removes sediment and old coolant that can reduce heat transfer and accelerate corrosion in a new radiator. A clean system helps the replacement unit operate at its designed efficiency and reduces the chance of early contamination-related failures.
What are typical causes of radiator leakage?
Leaks often come from corroded or cracked tanks, damaged fins, failed seals at hose connections, or weakened joints from age and thermal cycling. Impact damage from road debris can also puncture a radiator. Finding the leak source helps determine whether a repair is feasible or a full replacement is the safer option.
Will upgrading the radiator stop engine overheating in all cases?
Upgrading to a higher-capacity radiator can reduce overheating risk, but it may not address underlying issues like a failing thermostat, clogged coolant passages, weak water pump, or air in the system. Consider the cooling system as an integrated set of components and evaluate related parts if overheating persists after replacement.
How We Chose the Best Scion xB Radiator
We focused on the specific needs of Scion xB owners and applied filters to identify radiators that deliver reliable cooling and correct fitment. Key evaluation criteria included cooling capacity under typical driving loads, material and construction quality, compatibility with OE mounting and hose locations, and corrosion resistance for longer service life. We also considered ease of installation for common DIY tasks and whether the design supports factory inlet and outlet positions to avoid modifications. Products were excluded if they required extensive vehicle-specific alterations, lacked clear fitment documentation for the Scion xB, or used substandard materials that increase leak risk. We prioritized radiators that balance thermal performance with practical installability and durability. Long-term maintenance factors such as serviceability and resistance to common failure modes were also part of the selection process.
Our full evaluation process is outlined in our review methodology.
Conclusion
When selecting a replacement radiator for a Scion xB, prioritize correct fitment, robust construction, and adequate cooling capacity. Those three dimensions most directly affect installation simplicity, everyday temperature control, and long-term reliability. Balance corrosion resistance and serviceability against your installation preferences. If you maintain the system with regular coolant flushes and check connections during installation, you will get the best performance and longevity from the new radiator.
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