Gates 21897 Radiator Coolant Hose - Upper

Gates 21897 Molded Coolant Hose Overview

The Gates 21897 molded coolant hose is an OE-style radiator coolant hose built for upper cooling system applications. It is shaped to match the routing needed on select Ford, Mazda, and related interchange vehicles, helping restore proper coolant flow with a direct-fit replacement.

Gates Molded Coolant Hose products are built around OEM-quality specifications and cover upper, lower, bypass, heater, and other coolant routing needs. This line is designed to reduce the time spent sourcing dealer-only hose replacements while maintaining the fit and form expected in radiator hose service.

Key Features

• Molded radiator coolant hose for upper cooling system use
• EPDM and plastic construction for coolant service
• End 1 inside diameter: 1.25 in. (32 mm)
• End 2 inside diameter: 1.38 in. (35 mm)
• Centerline length: 26 in. (660 mm)
• No spring, no modular hose design, and no quick-connect fittings
• Direct replacement part number: Gates 21897

Detailed Description

Gates 21897 is a molded radiator coolant hose engineered for upper hose applications where the factory routing requires a formed shape rather than a straight hose. Its EPDM and plastic construction is suited to coolant system service, and the molded profile supports a clean OE-style replacement on vehicles such as the Ford Explorer, Ford Ranger, Mazda B4000, and Mazda Navajo. This part cross-references Dayco 71531 and Continental 61613 for the same application.

Use Gates 21897 when replacing a worn or damaged upper radiator hose on 1990-1994 Ford Ranger, upper; 1991-1994 Ford Explorer, upper; 1991-1994 Mazda Navajo, upper; and 1994 Mazda B4000, upper. The formed shape and specified hose diameters help match the original cooling system layout on these applications.

What It Helps Fix

• Cracked or split upper radiator hose sections
• Coolant leaks at the hose body or connection points
• Collapsed or softened hose material from age and heat
• Poor hose routing caused by an incorrect straight hose replacement
• Cooling system service needs on Ford Explorer, Ford Ranger, Mazda B4000, and Mazda Navajo

Installation Notes and Tips

Confirm 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 parts before filling the system. Verify fitment against the vehicle’s upper hose path on 1990-1994 Ford Ranger, 1991-1994 Ford Explorer, 1991-1994 Mazda Navajo, or 1994 Mazda B4000.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for radiator hose replacement service. The part is built for direct-fit cooling system repair and is backed by Gates’ established aftermarket hose engineering.