Gates 21864 Radiator Coolant Hose - Upper

Gates 21864 Molded Coolant Hose Overview

The Gates 21864 molded coolant hose is an OE-style radiator coolant hose built for upper cooling-system routing. It uses EPDM and plastic construction and is shaped to match the factory hose path for a cleaner, more direct replacement.

Compatible with select Toyota Corolla and Geo Prizm applications, this molded hose helps restore proper coolant flow in the upper radiator circuit. Gates molded coolant hose 21864 is made to OEM-quality specifications for a direct-fit service replacement.

Key Features

• Molded radiator coolant hose for upper hose applications
• EPDM and plastic construction for cooling-system service
• 1.18 in. inside diameter at both ends
• 22.3 in. centerline length
• No spring and no quick-connect fittings
• Direct replacement format for select Toyota Corolla and Geo Prizm models

Product Details

Gates Molded Coolant Hose line is engineered for upper, lower, bypass, heater, and other coolant routing needs, with fitment built around OEM-quality specifications. Part number 21864 is a molded upper radiator coolant hose with matching end diameters and a formed shape that follows the original hose path, helping simplify replacement on the cooling system.

This part cross-references Edelmann 8554 for the same application. Fits 1988-1991 Toyota Corolla, Upper. Fits 1990-1992 Geo Prizm, Upper.

Common Cooling System Issues It Can Address

• Cracked or split upper radiator hose
• Coolant leaks at the hose body
• Collapsed or softened hose material
• Poor hose routing after a previous repair
• Loss of coolant flow through the upper cooling circuit

Installation Notes

Verify hose routing, end diameters, and centerline length before installation. Drain the cooling system as needed, inspect the radiator neck and engine-side connection points, and replace worn clamps if required by the vehicle service procedure. Confirm the hose is seated fully and check for leaks after refilling and bleeding the system.

Quality Assurance

Gates manufactures molded coolant hoses to OEM-quality specifications and offers one of the broadest replacement hose lines in the aftermarket for radiator, heater, bypass, and related coolant applications.