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Denso 221-3221 Radiator
Overview of the Denso Radiator for Honda Civic and CRX
The Denso radiator part number 221-3221 is designed specifically for Honda Civic and CRX models. This radiator includes a transmission oil cooler and features precise core dimensions to ensure efficient cooling performance.
- Core Height: 12.875 inches
- Core Width: 25.937 inches
- Core Thickness: 0.625 inches
- Inlet Diameter: 1.125 inches
- Outlet Diameter: 1.125 inches
- Includes Transmission Oil Cooler
Detailed Radiator Specifications and Features
The Denso 221-3221 radiator is engineered with a core height of 12.875 inches, a width of 25.937 inches, and a thickness of 0.625 inches, providing optimal surface area for heat dissipation. Both the inlet and outlet diameters measure 1.125 inches, ensuring compatibility with the cooling system hoses of Honda Civic and CRX vehicles. The integrated transmission oil cooler supports the vehicle’s transmission system by maintaining proper fluid temperature, which is critical for transmission longevity and performance.
Compatible Vehicles and Applications
This radiator is compatible with select Honda Civic and CRX models, making it a suitable replacement for original equipment radiators in these vehicles. It is designed to address common cooling system issues such as overheating and transmission fluid temperature regulation.
- Overheating due to radiator core damage or clogging
- Transmission fluid overheating affecting shifting performance
- Leaks or cracks in the radiator core or tanks
- Reduced cooling efficiency from corrosion or wear
Installation Notes and Tips
When installing the Denso 221-3221 radiator, ensure that the inlet and outlet hose diameters match the vehicle’s existing hoses to avoid leaks. Properly flush the cooling system before installation to remove debris and contaminants. Verify that the transmission oil cooler lines are correctly connected to maintain transmission cooling functionality. It is recommended to inspect all related components such as hoses, clamps, and thermostat during installation.
Quality Assurance and Warranty Information
Denso radiators are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The 221-3221 radiator undergoes rigorous quality control testing to verify core integrity and cooling efficiency. Warranty coverage details should be confirmed with the distributor or manufacturer, as they may vary by region.
| Brand | Denso |
| Part Number | 221-3221 |
| Core Height | 12.8750 |
| Core Thickness | 0.6250 |
| Core Width | 25.9370 |
| Inlet Diameter | 1.1250 |
| Outlet Diameter | 1.1250 |
| Transmission Oil Cooler Included | YES |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Transmission | Position | Notes |
|---|---|---|---|---|---|
| 1991 | Honda | Civic | Automatic | N/A | w/ DENSO Radiator |
| 1991 | Honda | CRX | Automatic | N/A | w/ DENSO Radiator |
| 1990 | Honda | Civic | Automatic | N/A | w/ DENSO Radiator |
| 1990 | Honda | CRX | Automatic | N/A | w/ DENSO Radiator |
| 1989 | Honda | Civic | Automatic | N/A | w/ DENSO Radiator |
| 1989 | Honda | CRX | Automatic | N/A | w/ DENSO Radiator |
| 1988 | Honda | Civic | Automatic | N/A | w/ DENSO Radiator |
| 1988 | Honda | CRX | Automatic | N/A | w/ DENSO 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.