Gates 51441 HVAC Heater Hose - Heater Core Extension Inlet or Heater Core Extension Outlet

Gates 51441 Molded Heater Hose

The Gates 51441 molded coolant hose is built for specific HVAC heater core extension applications on select Ford and Lincoln trucks and SUVs. It follows OE-style routing and integrates the connection points needed for a direct replacement on the listed vehicles.

Key Features

• Gates Molded Coolant Hose line for application-specific fitment
• EPDM, plastic, and steel construction for coolant system service
• Female quick connector and male quick connector ends
• End 1 inside diameter: 14 mm (.56 in)
• End 2 inside diameter: 19 mm (.75 in)
• Centerline length: 171 mm (6.75 in)
• No spring included
• OE-style molded routing for heater core extension inlet and outlet locations

Product Details

Gates Molded Coolant Hose part number 51441 is part of the brand’s molded coolant hose line, which is built for specific applications and mirrors OEM-style specifications with integrated components where required. This hose is used in HVAC heater core extension service on 2011-2014 Ford Expedition, 2011-2014 Ford F-150, 2011-2014 Lincoln Navigator, 2015-2017 Ford Expedition, and 2015-2017 Lincoln Navigator. The molded shape and connector design help match the original routing and connection style used on these vehicles. If you are replacing a Ford Expedition heater core extension hose or a Lincoln Navigator molded coolant hose, Gates 51441 provides the correct application-specific layout. This part cross-references Dorman OE Solutions 626-659 for the same application.

What This Hose Helps Address

• Coolant leaks at a cracked or aged heater hose
• Improper fit from a universal hose replacement
• Damaged quick-connect ends at the heater core extension connection
• Heat-related hose hardening or deterioration
• Loss of heater performance caused by restricted coolant flow

Installation Notes and Tips

Verify the heater core extension inlet or outlet position before ordering, since the listed vehicles use different locations by year and model. Inspect the mating quick-connect fittings, seals, and nearby coolant lines before installation. Confirm hose routing matches the original molded shape to avoid kinks, tension, or contact with hot engine components. Gates 51441 is a direct-fit style replacement for the specified Ford Expedition, Ford F-150, and Lincoln Navigator applications.

Quality Assurance

Gates is a recognized aftermarket supplier in modular coolant hose assemblies, and this hose is manufactured to application-specific OE-style requirements for the listed vehicles.