Gates 20837 Radiator Coolant Hose - Lower

Gates 20837 Molded Coolant Hose

The Gates 20837 molded coolant hose is built for lower radiator hose applications that require an OEM-style formed shape and precise fit. Made from EPDM, it is engineered for dependable coolant routing on classic Ford, Lincoln, and Mercury vehicles.

Compatible with lower hose applications on the 1971-1978 Ford LTD, 1971-1978 Lincoln Continental, 1975-1978 Mercury Grand Marquis, and other listed models, this hose follows the original routing needed for proper cooling system service. Gates Molded Coolant Hose line is organized to cover upper, lower, bypass, heater, and related coolant hose needs with OE-level specifications.

Key Features

• Gates Molded Coolant Hose, part number 20837
• EPDM construction for coolant system use
• Molded shape for lower radiator hose routing
• End 1 inside diameter: 1.5 in. (38 mm)
• End 2 inside diameter: 2 in. (51 mm)
• Centerline length: 20.3 in. (516 mm)
• No spring, no branch, and no quick-connect fittings
• Cross-reference example: Dayco 70727

Product Details

This Gates 20837 radiator coolant hose is a molded replacement for vehicles that need a formed lower hose profile rather than a universal straight hose. The EPDM material is selected for coolant exposure, while the molded construction helps maintain the original hose path in the engine bay. It is listed for 1971-1978 Ford LTD, 1971-1978 Lincoln Continental, 1975-1978 Mercury Grand Marquis, 1971-1978 Mercury Marquis, 1971-1976 Ford Thunderbird, 1974-1976 Mercury Cougar, 1971 Mercury Cougar, 1971-1976 Mercury Montego, 1971-1974 Mercury Colony Park, and 1971 Ford Mustang.

Use Gates 20837 when replacing a lower radiator hose on classic Ford, Lincoln, or Mercury cooling systems that call for a molded EPDM hose with the specified inlet and outlet sizes. The part number 20837 is also referenced across several aftermarket and OE-style listings for the same application.

Common Problems This Hose Can Address

• Cracked or hardened lower radiator hose material
• Coolant leaks at the hose body or connection points
• Incorrect hose routing from a previous replacement
• Softening or swelling from age and heat cycling
• Cooling system service on original-equipment-style applications

Installation Notes and Tips

Verify the vehicle’s lower hose routing, inlet and outlet diameters, and centerline length before installation. Compare the existing hose shape to the molded profile of Gates 20837 to confirm alignment with the radiator and engine connections. Inspect clamps, necks, and adjacent cooling components for wear before reassembly.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in radiator and heater hose applications. The Gates molded coolant hose line is built to cover a broad range of cooling system service needs while matching the original hose form required by the vehicle.