Gates 21405 Radiator Coolant Hose - Lower

Reliable Radiator Coolant Hose for Ford F-Series Trucks

The Gates Molded Coolant Hose 21405 is engineered to provide dependable cooling system performance for Ford F-150, F-250, and F-350 models. Designed with durable EPDM material and precise molded construction, this radiator coolant hose ensures a secure fit and long-lasting service.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for exact fit and reduced risk of leaks
• Contains internal spring reinforcement for added durability
• Centerline length of 17 inches (432 mm) for proper routing
• End 1 inside diameter: 2 inches (51 mm); End 2 inside diameter: 2.31 inches (59 mm)

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-engineered hoses that are molded to match specific vehicle applications. This approach minimizes installation issues and improves coolant flow efficiency. The 21405 part benefits from this product line's emphasis on durability and fitment accuracy, making it suitable for Ford F-Series trucks requiring reliable radiator hose replacements.

Detailed Product Description

This radiator coolant hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. The molded construction ensures the hose maintains its shape and fits securely between radiator connections. The internal spring reinforcement helps prevent hose collapse under vacuum conditions, maintaining consistent coolant flow. With a centerline length of 17 inches (432 mm), the hose is designed to fit the cooling system layout of Ford F-150, F-250, and F-350 trucks precisely. The differing inside diameters at each end (2 inches/51 mm and 2.31 inches/59 mm) accommodate specific radiator and engine fittings, ensuring a tight seal and leak-free operation.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses on Ford F-150, F-250, and F-350
• Resolving coolant leaks caused by hose deterioration or improper fit
• Preventing overheating due to restricted coolant flow from collapsed hoses
• Maintaining proper coolant system pressure with reinforced hose design
• Ensuring compatibility with factory cooling system components

Installation Notes and Tips

Before installation, verify the hose dimensions and fitment with your specific Ford F-Series model. Ensure all clamps and connections are clean and free of debris. The molded design of the Gates 21405 hose allows for straightforward installation without modification. Avoid twisting or stretching the hose during installation to maintain its integrity and sealing capability.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21405 is manufactured to meet or exceed OEM specifications for durability and performance. The EPDM material and molded construction provide resistance to heat, pressure, and automotive fluids. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in material and workmanship.