Gates 21488 Radiator Coolant Hose

Gates 21488 Molded Coolant Hose Overview

Gates 21488 is a molded radiator coolant hose built for coolant routing in upper, lower, bypass, heater, and reservoir applications where an OEM-style formed hose is required. Made from EPDM, it is shaped for direct replacement use on select Ford Ranger, Ford Bronco II, Suzuki Esteem, and Hummer H1 applications.

The Gates Molded Coolant Hose line is built around replacement coverage for a wide range of cooling-system layouts, helping simplify radiator hose replacement on vehicles that need a formed hose rather than a universal straight hose.

Key Features

• EPDM construction for coolant-system service
• Molded hose profile for formed routing
• 1 in. inside diameter at both ends
• 14 in. centerline length
• No spring and no quick-connect fittings
• Direct replacement part number: 21488

Detailed Product Description

This Gates radiator coolant hose is engineered to match OEM-style dimensions for specific cooling-system routes, including radiator-to-reservoir, lower hose, and engine-to-pipe applications. The molded shape helps maintain the intended hose path in tight engine bays, while the EPDM material is commonly used in coolant service for its resistance to heat and coolant exposure. Gates 21488 is a practical replacement choice when the original hose is formed and a straight hose will not route correctly.

Fits 2006 Hummer H1, radiator to reservoir. Fits 1995-2001 Suzuki Esteem, lower. Fits 1984-1985 Ford Bronco II, engine to pipe. Fits 1983-1985 Ford Ranger, engine to pipe. This part cross-references Dayco 71218 for the same application.

What This Hose Helps Address

• Coolant leaks from a cracked or aged molded hose
• Improper routing after a hose failure or prior repair
• Softening, swelling, or deterioration in the coolant line
• Loss of coolant flow caused by a damaged formed hose
• Replacement needs on radiator-to-reservoir and engine-to-pipe routes

Installation Notes and Tips

Verify the hose route, end diameters, and centerline length before installation. Compare the original hose shape to the replacement to confirm the molded bends match the vehicle’s cooling-system layout. Inspect adjoining necks, clamps, and pipe ends for wear or corrosion before installing the new hose. After installation, refill the cooling system to the correct specification and check for leaks at operating temperature.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in cooling-system service. The part is built as a formed hose replacement for the listed applications and is backed by Gates’ established cooling-hose product line.