Gates 20437 Radiator Coolant Hose - Lower or Upper

Gates 20437 Molded Coolant Hose Overview

The Gates 20437 molded coolant hose is a radiator coolant hose built to OEM-quality specifications for upper cooling system service. It is formed from EPDM for durability and is shaped to match the routing needed on select Cadillac applications, including 1961-1962 Cadillac DeVille, 1961-1962 Cadillac Eldorado, and 1961-1962 Cadillac Commercial Chassis.

Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant hose applications, giving technicians a direct replacement option for radiator hose service on classic Cadillac cooling systems.

Key Features

• Brand: Gates Molded Coolant Hose
• Part number: 20437
• EPDM construction for coolant-system use
• Molded hose shape for proper routing
• 1.75 in. inside diameter at both ends
• 19.6 in. centerline length
• No spring and no quick-connect fittings
• Upper hose position

Detailed Description

This Gates 20437 radiator coolant hose is engineered as a molded replacement for upper coolant routing on select Cadillac vehicles. The EPDM material helps the hose handle engine-cooling temperatures and coolant exposure, while the molded profile supports a factory-style fit in the engine bay. It is a direct service part for 1961-1962 Cadillac DeVille, 1961-1962 Cadillac Eldorado, and 1961-1962 Cadillac Commercial Chassis applications that call for this upper hose configuration.

This part cross-references Four Seasons 66706 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened upper radiator hose material
• Coolant leaks at the hose body from age-related wear
• Poor hose routing caused by a misshaped replacement
• Cooling-system service needs on classic Cadillac upper hose applications
• Fitment issues when a molded OE-style hose is required

Installation Notes and Tips

Inspect the radiator neck, thermostat housing, and adjoining clamps before installation. Confirm the hose routing matches the original upper hose path and verify the 1.75 in. end diameters and 19.6 in. centerline length against the removed part before final assembly. Replace coolant and bleed the system according to the vehicle service procedure after installation.

Quality Assurance

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