Gates 21089 Radiator Coolant Hose - Lower

Gates 21089 Molded Coolant Hose Overview

Gates 21089 is a molded radiator coolant hose built to OEM-quality specifications for lower cooling-system routing. It is formed from EPDM and shaped for direct replacement use on select Ford truck and SUV applications, including the 1977-1979 Ford F-250 and 1978 Ford Bronco.

The Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant hose applications, giving technicians a direct-fit replacement option for radiator hose service. Part number 21089 is shaped to match the original hose path and dimensions for the listed vehicles.

Key Features

• Brand: Gates Molded Coolant Hose
• Part number: 21089
• Material: EPDM rubber
• Molded hose construction for OE-style routing
• End 1 inside diameter: 1.75 in. (44 mm)
• End 2 inside diameter: 2.00 in. (51 mm)
• Centerline length: 18.2 in. (462 mm)
• Contains spring: No
• Modular hose: No
• Number of quick connect fittings: 0

Detailed Description

Gates 21089 is a molded radiator coolant hose for lower hose applications on select Ford vehicles. It is listed for 1977 Ford F-250, 1978 Ford Bronco, and 1978-1979 Ford F-250, with notes calling out radiator top thickness and integral power steering on the applicable trucks. The molded shape helps match the original coolant hose path, while the EPDM construction is suited to engine-cooling service. If you are replacing a worn lower radiator hose on a Ford F-250 or Bronco, this part number 21089 provides a direct replacement reference for the listed fitments.

This part cross-references Dayco 70930 and Continental 60995 for the same application.

Common Problems This Hose Can Address

• Cracked or split lower radiator hose
• Coolant leakage at the hose body or ends
• Collapsed hose shape from age or heat cycling
• Incorrect hose routing after prior replacement
• Cooling-system service on listed Ford F-250 and Bronco models

Installation Notes and Tips

• Verify the vehicle year, model, and lower-hose routing before installation.
• Check radiator top thickness and the integral power steering note on the listed Ford applications.
• Inspect hose clamps, necks, and adjacent cooling-system components before reassembly.
• Confirm the hose end diameters and molded shape match the original part before filling the system.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in the cooling system. The Gates Molded Coolant Hose line is built to cover a wide range of radiator, bypass, heater, and other coolant hose applications.