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TYC 2581 Radiator
| Brand | TYC 2581 |
|---|---|
| Bottom Header | 2.25x24.31 |
| Core Height (in) | 23.12 |
| Core Length (in) | 25.59 |
| Core Material | Aluminum |
| Core Thickness (in) | 1.26 |
| Engine Oil Cooler Included | No |
| Fin Count (every 4") | 78 |
| Fin Wave Height (in) | 0.25 |
| Find Wave Pitch | 2.6 |
| Flow Configuration | Crossflow |
| Inlet Connection Type | Hose Clamp |
| Inlet Diameter (in) | 1.50 |
| No. Of Rows | 1 |
| Outlet Connection Type | Hose Clamp |
| Outlet Diameter (in) | 1.50 |
| Toc Distance (in) | 9.84 |
| Toc Inlet Diameter (in) | 0.39 |
| Toc Inlet Type | Tube fitting |
| Toc Outlet Diameter (in) | 0.39 |
| Toc Outlet Type | Tube fitting |
| Top Header | 2.25x24.31 |
| Total Fin Row Count | 71 |
| Total Tube Count | 70 |
| Transmission Oil Cooler Included | Yes |
| Transmission Oil Cooler Type | Plate Oil Cooler |
| Tube Count (every 4") | 12 |
| Tube Width X Height | 32x2 |
| Product line | TYC Radiator |
| Fits | Toyota · 7 vehicles |
Aluminum core. Lightweight construction helps promote efficient heat transfer.
Transmission oil cooler included. Adds integrated cooling for automatic transmission fluid.
Crossflow design. Engineered for steady coolant flow through the radiator.
Cross-references APDI 8012581, CSF 1859 and DENSO 221-3124 for the same application. See all 10.
TYC Radiator for Toyota 4Runner Cooling Service
Restore proper engine cooling with this TYC Radiator, part number 2581. It is built for direct replacement use on select Toyota 4Runner applications and includes an integrated transmission oil cooler for vehicles equipped with automatic transmission cooling needs.
- Aluminum core construction for efficient heat transfer
- Crossflow design with a single-row core
- Transmission oil cooler included with plate oil cooler design
- Hose clamp inlet and outlet connections
- Core dimensions: 25.59 in. length, 23.12 in. height, 1.26 in. thickness
- Inlet and outlet diameter: 1.50 in.
TYC Radiator Line Details
The TYC Radiator line focuses on direct-fit cooling replacements built to match OE-style dimensions and connection points. This TYC Radiator 2581 follows a crossflow layout with aluminum core material, 70 total tubes, and a plate-style transmission oil cooler integrated into the tank assembly for the listed Toyota 4Runner fitments.
Compatible with Toyota 4Runner cooling system service, this radiator is listed for 2003-2008 Toyota 4Runner and 2009 Toyota 4Runner, Primary. It is also referenced by OE and aftermarket cross numbers including Toyota 16400-50300 and Spectra Premium CU2581. If you are replacing a leaking or restricted Toyota 4Runner radiator, part number 2581 provides the specified core size and cooler configuration for the application.
Common Cooling Problems This Radiator Addresses
- Coolant leaks from a damaged or corroded radiator core
- Overheating caused by reduced coolant flow or internal blockage
- Transmission fluid temperature concerns when the cooler circuit is compromised
- Cracked hose connections or worn inlet and outlet fittings
- Cooling system service on a Toyota 4Runner with OE-style radiator dimensions
Installation Notes and Tips
Verify radiator dimensions, inlet and outlet size, and transmission cooler line connection style before installation. Flush the cooling system, inspect hoses and clamps, and confirm the transmission cooler lines are clean before connecting to the new radiator. For 2003-2008 Toyota 4Runner and 2009 Toyota 4Runner, Primary applications, compare the original unit to TYC Radiator 2581 to confirm fitment and cooler routing.
Quality Assurance
TYC supplies replacement cooling components with OE-style fitment focus and application-specific construction. This radiator is built with aluminum core material and integrated transmission oil cooling for the listed Toyota 4Runner applications.
| Year | Make | Model | Submodel | Body Type | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 2009 | Toyota | 4Runner | Sport | Sport Utility | — | 4.7L | V8 | Primary | TYC Radiator |
| 2008 | Toyota | 4Runner | — | — | Automatic | 4.7L | V8 | N/A | TYC Radiator |
| 2007 | Toyota | 4Runner | — | — | Automatic | 4.7L | V8 | N/A | TYC Radiator |
| 2006 | Toyota | 4Runner | — | — | Automatic | 4.7L | V8 | N/A | TYC Radiator |
| 2005 | Toyota | 4Runner | — | — | Automatic | 4.7L | V8 | N/A | TYC Radiator |
| 2004 | Toyota | 4Runner | — | — | Automatic | 4.7L | V8 | N/A | TYC Radiator |
| 2003 | Toyota | 4Runner | — | — | Automatic | 4.7L | V8 | N/A | TYC Radiator |
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