Gates 19103 HVAC Heater Hose

Gates Molded Heater Hose 19103 Overview

The Gates 19103 molded heater hose is an OEM-style coolant hose built for tight engine compartments where a straight hose will not route correctly. Made from EPDM, it is shaped for a factory-like fit and is approved for coolant, water, air, and marine applications.

Compatible With select Ford Explorer, Mercury Mountaineer, Hyundai Accent, Chevrolet Impala, Chevrolet Monte Carlo, Ford Windstar, Lincoln Continental, and Dodge Attitude applications, this molded heater hose supports heater circuit routing where the original hose follows a formed path. The Gates Molded Heater Hose line focuses on replacement hoses that match the shape and routing needs of modern vehicles.

Key Features

• Gates part number 19103
• Factory-molded, OE-style heater hose shape
• EPDM construction for coolant and heater service
• End I.D.: 0.62 in. / 16 mm at both ends
• Centerline length: 21.4 in. / 544 mm
• Approved for coolant, water, air, and marine use
• Formed for smaller, tighter engine compartments

Detailed Description

This molded heater hose is built for vehicles that require a shaped coolant hose rather than a universal straight section. The 19103 follows the routing needed in heater-to-tee, tee-to-auxiliary heater, heater-to-pipe, and heater-to-intake locations, helping maintain proper hose alignment in confined spaces. It is a direct-fit style solution for applications such as 2003-2006 Hyundai Accent, 2005 Chevrolet Impala, 2005 Chevrolet Monte Carlo, and 1999-2003 Ford Windstar, along with other listed Ford Explorer, Mercury Mountaineer, and Lincoln Continental applications.

This part cross-references Four Seasons 64138 for the same application.

What It Helps Solve

• Cracked or leaking heater hose sections
• Incorrect hose routing in tight engine bays
• Collapsed or softened coolant hose material
• Loss of heater circuit flow from damaged hose paths
• Replacement needs for molded OE-style hose routing

Installation Notes and Tips

Verify the hose shape, end inside diameter, and centerline length against the original part before installation. Confirm the vehicle’s heater hose routing position, such as heater to tee-2 or tee to auxiliary heater, to ensure the molded profile matches the application. Inspect adjoining pipes, tees, and clamps for wear before installing the replacement hose.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement using EPDM material and factory-molded construction for consistent fitment in the listed applications. The hose is approved for coolant, water, air, and marine service.