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CSF 3837 Radiator
CSF 3837 Radiator for Toyota Prius
The CSF 3837 is a 1-row all-aluminum radiator built for the 2004-2009 Toyota Prius. It uses an OEM-style all-aluminum tank and core design with cross-flow construction for direct-fit cooling system service.
Key Features
- 1-row all-aluminum radiator construction
- Core thickness: 5/8 in.
- Core dimensions: 23 5/8 in. length x 13 5/8 in. width
- Cross-flow design with 1 1/4 in. inlet on the left and 1 1/4 in. outlet on the right
- OEM-style all-aluminum tanks and core model
- Cap not included
- CSF cap number: 4513
Detailed Description
Built by CSF, part number 3837 is engineered as an OEM-style replacement radiator for the Toyota Prius cooling system. The aluminum core and aluminum tanks provide a lightweight, corrosion-resistant construction, while the single-row cross-flow layout supports efficient coolant transfer in a compact package. CSF manufactures a wide range of radiator designs and validates cooling performance through laboratory wind tunnel testing, with production backed by ISO/TSO-certified factories.
This CSF 3837 radiator is a direct-fit solution for 2004-2009 Toyota Prius models and is listed with a 13 psi micro cap requirement. It is a practical choice for drivers replacing a leaking, clogged, or damaged radiator in a Toyota Prius, while maintaining the original-style layout and hose connection orientation.
This part cross-references APDI 8012758 for the same application.
What It Is Used For
- Replacing a leaking radiator tank or core
- Restoring coolant flow after internal clogging
- Addressing overheating caused by radiator damage
- Replacing a corroded or aging OEM-style radiator
- Servicing a Toyota Prius cooling system with the correct inlet and outlet orientation
Installation Notes and Tips
- Compatible With 2004-2009 Toyota Prius, N/A.
- Use a micro 13 psi cap as noted in the fitment details.
- Verify inlet and outlet placement before installation: 1 1/4 in. left inlet and 1 1/4 in. right outlet.
- Confirm hose routing and mounting points against the original radiator before final assembly.
- Cap is not included with this radiator.
Quality Assurance
CSF radiators are manufactured to high-performance standards in ISO/TSO-certified facilities and are engineered for cooling performance validation. Part number 3837 reflects CSF’s OEM-style all-aluminum radiator design for the Toyota Prius application.
| Brand | CSF |
| Part Number | 3837 |
| Position | 1 Row All Aluminum |
| Core Thickness | 5/8 |
| Core Width | 13 5/8 |
| Core Material | Aluminum |
| Tank Material | Aluminum |
| Core Length | 23 5/8 |
| Inlet Diameter | 1 1/4 left |
| Outlet Diameter | 1 1/4 right |
| Down Flow Or Cross Flow Type | Cross flow |
| Radiator Core Row Quantity | 1 |
| Cap Included | No |
| Box Height (in) | 6 1/16 |
| Box Length (in) | 29 11/16 |
| Box Weight (lbs) | 7 |
| Box Width (in) | 18 13/16 |
| Csf Cap Number | 4513 |
| Hazardous Material | No |
| Inlet Length (in) | 14 3/16 |
| Inlet Width (in) | 15/16 |
| Outlet Length (in) | 14 3/16 |
| Outlet Width (in) | 15/16 |
| Tech Note | Oem style all aluminum tanks & core model. |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2009 | Toyota | Prius | 1.5L | L4 | ELECTRIC/GAS | N/A | OE Style Design; Use Micro, 13 psi Cap; 1 Row All Aluminum |
| 2008 | Toyota | Prius | 1.5L | L4 | ELECTRIC/GAS | N/A | OE Style Design; Use Micro, 13 psi Cap; 1 Row All Aluminum |
| 2007 | Toyota | Prius | 1.5L | L4 | ELECTRIC/GAS | N/A | OE Style Design; Use Micro, 13 psi Cap; 1 Row All Aluminum |
| 2006 | Toyota | Prius | 1.5L | L4 | ELECTRIC/GAS | N/A | OE Style Design; Use Micro, 13 psi Cap; 1 Row All Aluminum |
| 2005 | Toyota | Prius | 1.5L | L4 | ELECTRIC/GAS | N/A | OE Style Design; Use Micro, 13 psi Cap; 1 Row All Aluminum |
| 2004 | Toyota | Prius | 1.5L | L4 | ELECTRIC/GAS | N/A | OE Style Design; Use Micro, 13 psi Cap; 1 Row All Aluminum |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.