Gates 21207 Radiator Coolant Hose - Lower

Gates 21207 Molded Coolant Hose

The Gates 21207 molded coolant hose is a radiator coolant hose built to OEM-quality specifications for lower cooling-system routing. It is formed from EPDM and shaped to match the application-specific bend profile needed on select Buick, Cadillac, Chevrolet, and Oldsmobile vehicles.

Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant routing needs with a broad replacement range. For drivers servicing a 1993 Buick Roadmaster lower radiator hose or a 1992-1993 Chevrolet Caprice lower coolant hose, this part number provides a direct-fit replacement option.

Key Features

• Part number: 21207
• Brand: Gates Molded Coolant Hose
• Part type: radiator coolant hose
• Material: EPDM for coolant-system service
• Molded construction for application-specific routing
• End inside diameters: 40 mm (1.57 in) and 46 mm (1.81 in)
• Centerline length: 536 mm (21.1 in)
• Lower hose position
• No spring and no quick-connect fittings

Detailed Description

Gates 21207 is a molded lower radiator coolant hose engineered for vehicles that require a formed hose shape rather than a universal straight hose. The EPDM construction is suited to coolant exposure and the molded profile helps match the factory routing on applications such as 1979-1984 Cadillac DeVille lower hose service, 1979-1986 Cadillac Fleetwood lower hose replacement, and 1987-1992 Cadillac Brougham lower hose replacement. It also fits 1991-1992 Buick Roadmaster lower, 1991-1992 Oldsmobile Custom Cruiser lower, and 1991-1993 Chevrolet Caprice and Commercial Chassis lower applications.

This part cross-references Dayco 71521 and Continental 61096 for the same application.

Common Repair Uses

• Replacing a cracked or softened lower radiator hose
• Restoring coolant flow after hose swelling or collapse
• Correcting leaks at the hose ends or molded bends
• Addressing overheating caused by restricted coolant circulation
• Replacing a hose that no longer matches factory routing

Installation Notes and Tips

Verify end diameters and centerline length before installation to confirm the hose matches the vehicle routing. Inspect adjoining clamps, thermostat housing, radiator necks, and water pump connections for corrosion or damage before fitting the new hose. Drain coolant as needed, route the hose without twisting, and confirm clearance from belts, pulleys, and hot exhaust components after installation.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for direct replacement use in the listed Buick, Cadillac, Chevrolet, and Oldsmobile applications.