Gates 18916 HVAC Heater Hose

Gates 18916 Molded Heater Hose Overview

The Gates 18916 molded heater hose is an OEM-style coolant hose formed for tighter engine bays and small-diameter routing. Built from EPDM, it is made for coolant, water, and air service, and it is also approved for marine applications.

This Gates Molded Heater Hose line is focused on factory-shaped routing for cleaner fitment in compact HVAC and cooling layouts. For Ford Ranger, Mazda B2500, and Ford Windstar applications, the molded profile helps match the original hose path without forcing a straight hose into a curved route.

Key Features

• Brand: Gates
• Part number: 18916
• Product line: Molded Heater Hose
• EPDM construction for coolant, water, and air service
• Factory-molded shape for OEM-style routing
• Small I.D. design for tighter engine compartments
• Approved for marine applications
• End 1 inside diameter: 0.6 in (15 mm)
• End 2 inside diameter: 0.6 in (15 mm)
• Centerline length: 36.6 in (930 mm)

Detailed Description

Gates 18916 is a molded HVAC heater hose built to follow the original hose path in vehicles with limited clearance. The EPDM construction supports coolant transfer in heater and cooling circuits, while the molded shape helps maintain routing in applications where a straight hose would not match the factory layout. This part number is listed for Ford Windstar, Ford Ranger, Mazda B2500, and Ford F-100 Ranger heater hose locations, including heater to water pump, heater to intake manifold, heater to thermostat, heater to pipe-1, and tee-1 to auxiliary heater positions.

This part cross-references Dayco 87721 for the same application.

What It Helps Address

• Leaking or cracked heater hose sections in the cooling system
• Improper hose routing in compact engine compartments
• Heat-related hose deterioration in coolant circuits
• Replacement needs for molded heater hose applications on Ford Ranger and Mazda B2500
• Service on Ford Windstar auxiliary heater routing

Installation Notes and Tips

• Verify the vehicle’s heater hose routing and position before installation.
• Check end diameters and centerline length against the original hose.
• Confirm engine and HVAC configuration, especially on Ranger and B2500 applications noted as not compatible with vehicles equipped with AC.
• Inspect adjoining clamps, fittings, and pipe ends for wear or corrosion before installing the new hose.
• Use the molded shape to preserve factory routing and reduce hose stress.

Quality Assurance

Gates is known for OE-style hose engineering, and this molded heater hose is built to factory-style dimensions for direct replacement use in listed applications. Part number 18916 is specified for confirmed vehicle fitment across the included Ford and Mazda applications.