Gates 21947 Radiator Coolant Hose - Upper

Gates 21947 Molded Coolant Hose Overview

The Gates 21947 molded coolant hose is an OE-style radiator coolant hose built for upper hose applications that require a formed shape and precise end sizing. Made from EPDM, it is engineered to match the routing and sealing needs of select Ford Ranger, Mazda B2300, and Saturn upper coolant hose applications.

Gates Molded Coolant Hose line is built around replacement fitment coverage for upper, lower, bypass, heater, and other coolant hose positions, giving technicians a direct replacement option for common cooling system service jobs.

Key Features

• EPDM construction for coolant system durability
• Molded design for proper hose routing and fit
• End 1 inside diameter: 1.19 in. (30 mm)
• End 2 inside diameter: 1.38 in. (35 mm)
• Centerline length: 22.2 in. (564 mm)
• No spring, no modular hose, and no quick-connect fittings
• Upper radiator coolant hose application

Detailed Description

Gates 21947 is a molded radiator coolant hose for upper hose service on select vehicles, including 2005-2011 Ford Ranger, 2005-2010 Mazda B2300, and Saturn SC1, SC2, SL, SL1, SL2, SW1, SW2, and SC upper hose applications across the listed model years. The molded shape helps maintain the intended hose path, while the EPDM material is suited for cooling system use where heat and coolant exposure are constant. This part number, 21947, is a direct replacement choice when the original hose has softened, cracked, or lost its formed shape.

This part cross-references Dayco 71576 for the same application.

What It Helps Fix

• Coolant leaks from a cracked or aged upper radiator hose
• Softening, swelling, or collapse in the original hose
• Poor hose routing caused by a deformed molded shape
• Cooling system service needs on Ford Ranger and Mazda B2300 upper hose applications
• Replacement of worn Saturn upper coolant hoses on listed SC, SL, and SW models

Installation Notes and Tips

Verify end diameters, centerline length, and routing before installation to confirm the hose matches the vehicle’s upper coolant path. Inspect hose clamps, thermostat housing connections, and radiator necks for wear or corrosion before installing Gates 21947. Drain coolant as needed, route the hose without twisting, and confirm there is no interference with belts, pulleys, or engine accessories after installation.

Quality Assurance

Gates molded coolant hoses are manufactured to OEM-quality specifications for replacement cooling system service. The Gates 21947 part is built to support accurate fitment and dependable hose routing in the applications listed above.