Dorman 621-111 Engine Cooling Fan Blade

Engine Cooling Fan Blade for Silverado and Sierra HD

This Dorman engine cooling fan blade is a direct replacement for damaged or worn OE-style fan blades on select Chevrolet Silverado and GMC Sierra heavy-duty trucks. Built for vehicle-specific fitment, it helps restore proper airflow through the cooling system on applications such as the Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD.

Key Features

• Direct replacement engine cooling fan blade
• Vehicle-specific fit for select Chevrolet Silverado and GMC Sierra HD applications
• 7-blade design with a 20.5-inch blade diameter
• Plastic blade construction with white finish
• Standard replacement grade for routine cooling system repair
• Package contents: fan blade

Detailed Description

Dorman 621-111 is engineered as a replacement cooling fan blade for heavy-duty GM trucks that need restored airflow across the radiator and cooling stack. It is built to match the application requirements of select 2011-2026 Chevrolet Silverado 2500 HD and Silverado 3500 HD models, plus 2011-2026 GMC Sierra 2500 HD and Sierra 3500 HD models. This part number, 621-111, is also used in cross-reference listings for the same application.

The blade uses a 7-blade plastic design with a 20.5-inch diameter and standard replacement construction. For buyers searching for a Chevrolet Silverado 2500 HD cooling fan blade, GMC Sierra 3500 HD fan blade, or a direct replacement engine cooling fan blade for HD truck cooling repair, this part is built around the original application requirements.

This part cross-references 1581671 and 25919018 for the same application.

What It Helps Address

• Cracked or broken cooling fan blade
• Reduced airflow through the radiator and condenser area
• Cooling system noise caused by a damaged blade
• Overheating concerns related to fan blade wear or failure
• Restoring proper fan operation after OE blade damage

Installation Notes and Tips

Verify blade diameter, blade count, and mounting configuration before installation. Inspect the fan clutch, shroud, and surrounding cooling components for wear or damage while the fan blade is removed. Confirm fitment against the vehicle application before service on 2011-2026 Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as 2011-2026 GMC Sierra 2500 HD and Sierra 3500 HD models.

Quality Assurance

Dorman supplies this as a standard replacement cooling component built from quality materials for durability and proper cooling system operation. The vehicle-specific design supports accurate fitment for the listed Chevrolet Silverado and GMC Sierra HD applications.