Gates 12392 HVAC Heater Hose - Reservoir To Thermostat

Gates Molded Heater Hose 12392 Overview

The Gates 12392 molded heater hose is an OEM-style coolant hose built for tight engine bays where a straight hose will not route cleanly. It is formed to follow the factory path from the reservoir to the thermostat on select Ford and Lincoln applications, including Ford F-150, Ford Expedition, and Lincoln Mark LT models.

Made from EPDM, this molded hose is suitable for coolant, water, and air service, and Gates also approves it for marine applications. The factory-molded shape helps maintain proper routing in smaller engine compartments while supporting a clean, direct replacement for the original hose.

Key Features

• Gates Molded Heater Hose, part number 12392
• OEM-style molded construction for tight engine compartment routing
• EPDM material for coolant, water, and air applications
• Approved for marine applications
• End 1 inside diameter: 9 mm (.34 in)
• End 2 inside diameter: 7 mm (.29 in)
• Centerline length: 615 mm (24.2 in)

Product Details

Gates 12392 is a molded coolant hose from the Gates Molded Heater Hose line, a product family focused on factory-shaped hose routing for modern vehicles with limited space around the engine. This hose is built to match the reservoir-to-thermostat path used on 2011-2014 Ford F-150, 2015-2017 Ford Expedition, and 2012-2014 Lincoln Mark LT applications. If you are replacing a worn Ford F-150 heater hose or servicing a Ford Expedition coolant hose connection, this molded design helps preserve the original routing and fit.

This part cross-references Carlson 13392 for the same application.

Common Problems This Hose Can Address

• Coolant leaks from a cracked or aged molded hose
• Improper routing caused by a damaged original hose
• Restricted coolant flow from hose collapse or deterioration
• Fitment issues when a universal hose does not match the factory shape
• Service replacement needs for reservoir-to-thermostat hose routing

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length before installation. Confirm the reservoir-to-thermostat routing on your Ford F-150, Ford Expedition, or Lincoln Mark LT to ensure the molded shape matches the original layout. Inspect adjoining clamps, thermostat housing, and reservoir connections for wear or residue before installing the new hose.

Quality Assurance

Gates is known for producing OE-style hose components with application-specific molding and material selection. The EPDM construction and factory-molded shape support consistent fitment on the listed vehicles, including 2011-2014 Ford F-150, 2015-2017 Ford Expedition, and 2012-2014 Lincoln Mark LT.