Gates 21668 Radiator Coolant Hose - Upper

Gates 21668 Molded Coolant Hose Overview

The Gates 21668 molded coolant hose is an OE-style radiator coolant hose built for upper cooling system applications. It uses EPDM construction and molded shaping to match the routing and dimensions needed for select Ford truck fitment, including Ford F-250, Ford F-250 HD, and Ford F-350 upper hose applications.

Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant hose positions with OEM-quality specifications. This helps simplify radiator hose replacement when you need a direct-fit molded hose for a specific cooling system layout.

Key Features

• Part number: 21668
• Brand: Gates Molded Coolant Hose
• Part type: radiator coolant hose
• EPDM rubber construction for cooling system service
• Molded design for proper hose routing
• End inside diameters: 1.5 in. (38 mm) and 1.75 in. (44 mm)
• Centerline length: 19.7 in. (500 mm)
• Upper hose position
• No spring and no quick-connect fittings

Detailed Description

Gates 21668 is a molded radiator coolant hose engineered for upper hose applications where a formed replacement is needed to match the vehicle’s cooling system layout. The EPDM material is suited for coolant service, while the molded profile helps maintain the correct path between connection points. This part number is listed for 1988-1997 Ford F-250, 1997 Ford F-250 HD, and 1988-1997 Ford F-350 upper hose applications. If you are searching for a Ford F-250 upper radiator hose or a Ford F-350 molded coolant hose, Gates 21668 is the direct replacement reference to check.

This part cross-references Dayco 72752 and Continental 62161 for the same application.

What It Helps Address

• Cracked or aged upper radiator hose material
• Coolant leaks at the hose body or connection points
• Incorrect hose routing from a previous replacement
• Heat-related hose softening or collapse in service
• Fitment issues when a molded upper hose is required

Installation Notes and Tips

Verify the vehicle year, make, model, and upper hose position before ordering. Compare the hose’s molded shape, end diameters, and centerline length to the original part to confirm fitment on your Ford F-250, Ford F-250 HD, or Ford F-350 application. Inspect clamps, necks, and adjacent cooling system components during replacement, and refill the cooling system according to the vehicle service procedure after installation.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for radiator hose replacement applications. The Gates molded coolant hose line is built to cover a broad range of cooling system needs with formed replacement options for common upper, lower, bypass, and heater hose positions.