Dorman 621-186 Engine Cooling Fan Assembly - Left

Overview of Dorman Engine Cooling Fan Assembly 621-186

The Dorman Engine Cooling Fan Assembly 621-186 is designed specifically for Audi RS4 and S4 models, providing reliable engine cooling performance. This assembly includes a single black plastic fan blade and shroud, equipped with a brushed motor to ensure consistent airflow and temperature regulation.

• Compatible with Audi RS4 and S4 models
• Includes one plastic fan blade and black plastic shroud
• Brushed motor type for steady operation
• Two terminals with one female connector for easy wiring
• Complete radiator fan assembly for direct replacement

Detailed Product Features and Specifications

The Dorman 621-186 engine cooling fan assembly features a durable plastic fan blade and shroud, both designed to withstand the heat and stress of engine bay conditions. The black plastic shroud helps direct airflow efficiently through the radiator, improving cooling system performance. The brushed motor type provides reliable power to the fan, maintaining optimal engine temperatures during operation. This assembly includes two terminals and a single female connector, facilitating straightforward electrical connections. The package contains the full radiator fan assembly, making it a comprehensive replacement part for Audi RS4 and S4 vehicles.

Applications and Common Issues Addressed

• Replaces faulty or worn engine cooling fan assemblies in Audi RS4 and S4
• Resolves overheating issues caused by inadequate radiator airflow
• Fixes fan motor failure leading to engine temperature spikes
• Addresses damaged or cracked fan blades affecting cooling efficiency
• Restores proper fan shroud function to optimize airflow direction

Installation Notes and Tips

• Ensure vehicle is powered off and cooled before installation
• Disconnect battery to prevent electrical shorts during replacement
• Verify connector gender and terminal count match existing wiring harness
• Carefully remove old fan assembly to avoid radiator damage
• Secure new fan assembly firmly to prevent vibration and noise

Quality Assurance and Warranty Information

Dorman engine cooling fan assemblies are manufactured to meet or exceed OEM specifications for fit, form, and function. The 621-186 part undergoes rigorous quality control to ensure durability and reliable performance in Audi RS4 and S4 vehicles. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship to provide confidence in your replacement part.