Dorman 621-535 Engine Cooling Fan Blade

Overview of Dorman Engine Cooling Fan Blade 621-535

The Dorman 621-535 engine cooling fan blade is designed to maintain optimal engine temperature for Chevrolet Canyon, Colorado, GMC Canyon, Colorado, and Hummer H3 and H3T models. This replacement fan blade features a durable plastic construction with 11 blades and a 457 mm diameter, finished in yellow for easy identification.

• 11-blade design for efficient airflow
• 457 mm blade diameter suitable for specified vehicle models
• Durable plastic blade material
• Yellow finish for visibility and corrosion resistance
• Standard replacement grade for reliable performance
• Mounting hardware not included

Product Details and Specifications

The Dorman 621-535 engine cooling fan blade is engineered as a standard replacement part to restore proper cooling system function in select Chevrolet, GMC, and Hummer vehicles. The 11 blades are molded from plastic, providing a balance of strength and lightweight performance. With a blade diameter of 457 mm, this fan blade matches OEM specifications to ensure compatibility and effective cooling. The yellow finish helps resist corrosion and makes inspection easier during maintenance. Note that mounting hardware is not included, so existing hardware should be reused or sourced separately.

Compatible Vehicles and Applications

This engine cooling fan blade is compatible with the following makes and models:

• Chevrolet Canyon and Colorado
• GMC Canyon and Colorado
• Hummer H3 and H3T

It is designed to replace worn or damaged fan blades that can cause overheating, reduced cooling efficiency, or unusual engine noise.

Common Issues Addressed by This Fan Blade

• Engine overheating due to inefficient airflow
• Damaged or cracked fan blades causing imbalance
• Excessive engine noise from broken or loose blades
• Reduced cooling system performance
• Corrosion or wear on original fan blade

Installation Notes and Tips

When installing the Dorman 621-535 engine cooling fan blade, ensure the mounting surface is clean and free of debris. Since mounting hardware is not included, inspect existing bolts and fasteners for wear and replace if necessary. Proper torque specifications should be followed to avoid blade imbalance or damage. It is recommended to verify blade clearance and alignment during installation to prevent contact with other engine components.

Quality Assurance and Warranty

Dorman engine cooling fan blades are manufactured to meet or exceed OEM standards for fit and function. The 621-535 part is a standard replacement grade component designed for durability and consistent performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Refer to Dorman’s official documentation for exact warranty terms.