OE Quality
60-Day Returns

Dorman 620-604 Engine Cooling Fan Assembly - Left
Overview of Dorman Engine Cooling Fan Assembly 620-604
The Dorman 620-604 engine cooling fan assembly is designed specifically for Buick Century and Pontiac Grand Prix models. This radiator fan assembly includes a durable black plastic shroud and a reliable brushed motor to ensure efficient engine cooling performance.
- Compatible with Buick Century and Pontiac Grand Prix vehicles
- Includes one plastic fan blade and black plastic shroud
- Brushed motor type for consistent operation
- Two terminals with one male connector for easy wiring
- Complete radiator fan assembly for direct replacement
Detailed Product Features and Specifications
This engine cooling fan assembly by Dorman features a single plastic fan blade designed to provide effective airflow through the radiator. The included black plastic shroud helps direct air efficiently, improving cooling system performance. The motor is a brushed type, which offers dependable operation suitable for the specified Buick and Pontiac models. Electrical connections include two terminals and one male connector, facilitating straightforward installation and compatibility with the vehicle's wiring harness.
Compatible Vehicles and Application
This radiator fan assembly is compatible with the following vehicles:
- Buick Century
- Pontiac Grand Prix
Use this part number 620-604 when searching for a replacement cooling fan assembly for these specific models to ensure proper fit and function.
Common Issues Addressed by This Cooling Fan Assembly
- Overheating due to faulty or worn cooling fan
- Reduced airflow from damaged or broken fan blades
- Electrical failures related to motor or connector issues
- Cooling inefficiency caused by missing or damaged shroud
- Noise or vibration from malfunctioning fan motor
Installation Notes and Tips
When installing the Dorman 620-604 engine cooling fan assembly, ensure the electrical connectors are securely attached to avoid intermittent operation. Verify that the shroud is properly aligned to maximize airflow through the radiator. It is recommended to inspect the radiator and surrounding components for debris or damage before installation. This assembly is designed for direct replacement, so no modifications should be necessary.
Quality Assurance and Warranty Information
Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 620-604 engine cooling fan assembly undergoes quality checks to ensure reliable performance. Please refer to Dorman's warranty policy for specific coverage details related to this part.
| Brand | Dorman |
| Part Number | 620-604 |
| Blade Material | Plastic |
| Connector Gender | Male |
| Fan Quantity | 1 |
| Motor Type | Brushed |
| Package Contents | Radiator Fan Assembly |
| Shroud Color | Black |
| Shroud Included | Yes |
| Shroud Material | Plastic |
| Terminal Quantity | 2 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1998 | Buick | Century | 3.1L | V6 | Left | |
| 1998 | Pontiac | Grand Prix | 3.1L | V6 | Left | |
| 1997 | Buick | Century | 3.1L | V6 | Left | |
| 1997 | Pontiac | Grand Prix | 3.1L | V6 | Left |
* 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.