Gates 23661 Radiator Coolant Hose - Lower

Gates 23661 Molded Coolant Hose Overview

The Gates 23661 molded coolant hose is a direct-fit radiator coolant hose built for specific vehicle applications. It uses EPDM and plastic construction and follows OEM-style routing with an integrated branch for the cooling system layout.

Compatible with select 2010-2012 Ford Fusion, 2011-2012 Lincoln MKZ, and 2010-2011 Mercury Milan lower hose applications, this molded hose is shaped to match the original path and connection points. Gates 23661 is part of the Gates Molded Coolant Hose line, which focuses on application-specific hoses with OE-style integrated components.

Key Features

• Part number: 23661
• Brand line: Gates Molded Coolant Hose
• Radiator coolant hose for lower hose applications
• EPDM and plastic construction
• Molded design with 1 branch
• Centerline length: 18.5 in. / 470 mm / 19 in.
• End inside diameters: 1.5 in. (38 mm), 1.31 in. (33 mm), and .75 in.
• No spring included
• No quick-connect fittings

Application Details

Gates builds this modular coolant hose to match specific vehicle cooling-system layouts rather than using a universal shape. The molded design and integrated branch help maintain the original hose routing on the Ford Fusion, Lincoln MKZ, and Mercury Milan lower radiator hose position. If you are replacing a worn or damaged lower coolant hose, Gates 23661 provides an OE-style replacement path for the factory configuration.

This part cross-references Continental 66470 for the same application.

Common Problems This Hose Can Address

• Coolant leaks from a cracked or aged lower radiator hose
• Softening, swelling, or collapse of the original hose
• Loss of proper coolant flow due to hose deterioration
• Fitment issues caused by an incorrect hose shape or branch layout
• Replacement needs after heat cycling and long-term EPDM wear

Installation Notes and Tips

Confirm the vehicle year, make, model, and lower hose routing before installation. Compare the original hose shape, branch location, and end diameters to the replacement part before removing the old hose. Inspect adjoining clamps, fittings, and coolant condition during service, and refill the cooling system according to the vehicle manufacturer’s procedure after installation.

Quality Assurance

Gates is recognized in the automotive aftermarket for modular coolant hose assemblies that follow application-specific OE-style requirements. The 23661 molded coolant hose is manufactured for the listed vehicle applications and built to match the original cooling-system configuration.