Gates 21759 Radiator Coolant Hose - Upper

Gates 21759 Molded Coolant Hose Overview

The Gates 21759 molded coolant hose is an OE-style radiator coolant hose built for upper coolant routing on select Cadillac applications. Made from EPDM and formed to the correct molded shape, it supports a precise replacement for aging or damaged factory hose assemblies.

Compatible with 1988-1993 Cadillac Eldorado upper, 1988-1993 Cadillac Seville upper, and 1994-1995 Cadillac DeVille upper applications, this hose is sized for a 1.25 in. inside diameter at both ends and a 30.9 in. centerline length.

Key Features

• Brand: Gates Molded Coolant Hose
• Part number: 21759
• EPDM construction for coolant-system service
• Molded design for upper radiator hose routing
• 1.25 in. inside diameter at both ends
• 30.9 in. centerline length
• No spring and no quick-connect fittings

Product Details

Gates Molded Coolant Hose line is engineered for upper, lower, bypass, heater, and other coolant applications using OEM-quality specifications. The 21759 follows that approach with a molded profile that matches the routing needs of the listed Cadillac DeVille, Eldorado, and Seville fitments. This helps restore proper hose alignment and coolant flow in vehicles where the original upper hose has hardened, cracked, or lost its shape.

This part cross-references Dayco 71378 and Continental 61557 for the same application.

Common Cooling System Issues It Can Address

• Cracked or split upper radiator hose
• Collapsed or misshaped coolant hose routing
• Coolant leaks at the hose body
• Restricted coolant flow from deteriorated hose material
• Fitment problems caused by an incorrect hose shape

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length before installation. Inspect the mating necks, clamps, and nearby cooling components for wear or corrosion, and replace any damaged hardware as needed during service. Confirm the application is the upper hose position for the specific Cadillac model and year before final fitment.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for direct replacement use in the listed applications. The EPDM construction and molded form are intended to match the demands of radiator coolant service in compatible Cadillac upper hose locations.