Gates 21505 Radiator Coolant Hose - Lower or Lower - Engine To Pipe

Gates 21505 Molded Radiator Coolant Hose

The Gates 21505 molded coolant hose is built for radiator coolant routing on select Ford trucks with OEM-quality specifications. It is formed for the lower hose position and uses EPDM construction with an internal spring to help maintain shape under cooling-system vacuum and heat cycling.

Key Features

• Brand: Gates Molded Coolant Hose line
• Part number: 21505
• Material: EPDM
• Molded radiator coolant hose for lower hose applications
• End inside diameters: 1.75 in. (44 mm) and 2 in. (51 mm)
• Centerline length: 22.7 in. (577 mm)
• Contains spring for added hose support
• OEM-quality replacement for radiator hose service

Product Details

Gates Molded Coolant Hose 21505 is part of a broad replacement hose line engineered for upper, lower, bypass, heater, and other coolant-system routes. This molded design follows the shape needed for the application, helping simplify replacement on vehicles that require a formed lower radiator hose. It is a direct-fit style replacement for 1983-1989 Ford F-250 and Ford F-350 lower hose applications, and for 1990 Ford F-250 and Ford F-350 lower hose applications without an oil cooler. This part cross-references Dayco 71215 and Continental 61404 for the same application.

What It Helps Address

• Cracked or split lower radiator hose
• Coolant leaks at a worn hose assembly
• Collapsed hose shape from heat and vacuum stress
• Improper hose routing from a non-molded replacement
• Cooling-system service on Ford F-250 and Ford F-350 trucks

Installation Notes and Tips

Verify the lower hose routing, end diameters, and centerline length before installation. This hose is listed for 1983-1989 Ford F-250, lower; 1983-1989 Ford F-350, lower; 1990 Ford F-250, lower, w/o oil cooler; and 1990 Ford F-350, lower, w/o oil cooler. Inspect clamps, necks, and adjacent cooling-system components for wear before installing the new hose. Drain coolant as needed and confirm the hose seats fully on both connections.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for radiator hose replacement service. The EPDM construction and molded profile support consistent fitment in the specified Ford F-250 and Ford F-350 lower hose applications.