OE Quality
60-Day Returns

TYC 2377 Radiator
Overview of the TYC Radiator for Toyota Highlander
The TYC Radiator part number 2377 is engineered specifically for Toyota Highlander models, providing reliable cooling performance. Designed with durable aluminum core material and integrated transmission oil cooler, this radiator supports efficient engine operation and transmission temperature management.
- Core material constructed from aluminum for effective heat dissipation
- Includes a concentric transmission oil cooler for integrated cooling
- Downflow flow configuration optimized for Toyota Highlander engine bay
- Core dimensions: 29.06 inches height, 17.72 inches length, and 1.02 inches thickness
- Hose clamp inlet and outlet connections with 1.38-inch diameter
- Single-row tube design with 73 fins every 4 inches for enhanced airflow
- Top and bottom headers sized at 2.04 by 29.9 inches
Detailed Product Description
The TYC Radiator 2377 features a robust aluminum core that ensures efficient heat transfer and durability under demanding conditions. Its downflow design facilitates optimal coolant flow through the radiator, maintaining engine temperature within manufacturer specifications. The integrated concentric transmission oil cooler supports transmission fluid cooling, which is critical for maintaining transmission performance and longevity in Toyota Highlander vehicles. The radiator’s fin count of 73 every 4 inches and total fin row count of 74 contribute to effective heat dissipation. Hose clamp inlet and outlet connections with 1.38-inch diameters provide secure and compatible attachment points for coolant hoses. The single-row tube configuration with 10 tubes every 4 inches balances cooling capacity and flow resistance.
TYC Radiator Product Line
The TYC Radiator product line focuses on delivering reliable cooling components designed to meet or exceed OEM specifications. Radiators in this line, including part number 2377, are manufactured with quality materials such as aluminum cores and incorporate features like integrated transmission oil coolers to support vehicle-specific cooling requirements. This ensures compatibility and performance tailored for applications like the Toyota Highlander.
Common Applications and Issues Addressed
- Replacement for leaking or damaged radiator cores in Toyota Highlander
- Restores proper engine cooling to prevent overheating
- Maintains transmission fluid temperature with built-in oil cooler
- Resolves coolant flow restrictions caused by clogged or corroded radiators
- Supports engine performance by ensuring consistent coolant circulation
Installation Notes and Tips
When installing the TYC Radiator 2377 on a Toyota Highlander, ensure all hose clamps are securely fastened to the 1.38-inch inlet and outlet connections. Verify the downflow orientation matches the vehicle’s cooling system layout. Inspect and replace any worn hoses or fittings to prevent leaks. Properly bleed the cooling system after installation to remove air pockets and ensure optimal coolant flow.
Quality Assurance and Warranty
TYC Radiators are manufactured to meet industry standards for durability and performance. The aluminum core construction and integrated transmission oil cooler are tested for reliability under typical operating conditions. While specific warranty details are not provided here, TYC products generally come with a limited warranty covering defects in materials and workmanship.
| Brand | TYC |
| Part Number | 2377 |
| Position | TYC Radiator |
| Core Material | Aluminum |
| Transmission Oil Cooler Included | Yes |
| Transmission Oil Cooler Type | Concentric oil cooler |
| Engine Oil Cooler Included | No |
| Bottom Header | 2.04x29.9 |
| Core Height (in) | 29.06 |
| Core Length (in) | 17.72 |
| Core Thickness (in) | 1.02 |
| Fin Count (every 4") | 73 |
| Fin Wave Height (in) | 0.31 |
| Find Wave Pitch | 2.8 |
| Flow Configuration | Downflow |
| Inlet Connection Type | Hose clamp |
| Inlet Diameter (in) | 1.38 |
| No. Of Rows | 1 |
| Outlet Connection Type | Hose clamp |
| Outlet Diameter (in) | 1.38 |
| Toc Distance (in) | 14.76 |
| Toc Inlet Diameter (in) | 0.39 |
| Toc Inlet Type | Tube fitting |
| Toc Outlet Diameter (in) | 0.39 |
| Toc Outlet Type | Tube fitting |
| Top Header | 2.04x29.9 |
| Total Fin Row Count | 74 |
| Total Tube Count | 73 |
| Tube Count (every 4") | 10 |
| Tube Width X Height | 26x2 |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2003 | Toyota | Highlander | Automatic | 3.0L | V6 | N/A | w/ Tow Pkg; TYC Radiator |
| 2002 | Toyota | Highlander | Automatic | 3.0L | V6 | N/A | w/ Tow Pkg; TYC Radiator |
| 2001 | Toyota | Highlander | Automatic | 3.0L | V6 | N/A | w/ Tow Pkg; TYC Radiator |
* 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.