Gates 18777 HVAC Heater Hose

Gates Molded Heater Hose for Tight Engine Bays

The Gates 18777 molded heater hose is a factory-shaped coolant hose built for compact engine compartments where a straight hose will not route correctly. Made from EPDM, it is suited for coolant, water, and air transfer and is also approved for marine applications.

Use this Gates Molded Heater Hose when you need an OE-style replacement for heater and coolant routing on select Ford Taurus, Mazda RX-7, Chevrolet Corvette, Isuzu Pickup, Isuzu Trooper, Chevrolet Camaro, Pontiac Firebird, Volkswagen Jetta, Volkswagen Rabbit Convertible, Nissan 200SX, and related applications.

Key Features

• EPDM construction for coolant, water, and air service
• Factory-molded shape for tighter engine bay routing
• Small I.D. design with 0.62 in. / 16 mm ends
• 7.2 in. centerline length for application-specific fitment
• Approved for marine applications
• Gates 18777 molded hose design for OE-style replacement

Detailed Product Overview

The Gates Molded Heater Hose line is built around factory-molded routing to match the space constraints found in modern and older engine compartments alike. Part number 18777 uses EPDM material and a molded profile to help maintain proper hose alignment in heater, coolant, and air circuits. This makes it a practical replacement for vehicles such as the Ford Taurus, Mazda RX-7, and Chevrolet Corvette where the hose path must follow a specific bend and length.

This Gates 18777 hose cross-references Dayco 87653 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened heater hose material
• Improper hose routing in tight engine compartments
• Coolant leaks at a worn molded hose section
• Restricted flow caused by a collapsed hose bend
• Replacement needs for heater, coolant, or air transfer lines

Installation Notes and Tips

Verify end diameters, centerline length, and molded shape against the original hose before installation. Confirm routing on the vehicle, especially on applications such as Ford Taurus engine-to-pipe, Mazda RX-7 heater-to-pipe, and Chevrolet Corvette throttle body to intake manifold locations. Inspect adjoining pipes, clamps, and sealing surfaces for wear before installing the new hose.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement with application-specific shaping and EPDM construction. Part number 18777 is built to support the fitment and routing requirements listed for the confirmed vehicle applications.

Confirmed Fitment

• Fits 1993-1995 Ford Taurus, Engine To Pipe
• Fits 1989-1992 Ford Taurus, Engine To Pipe-1
• Fits 1993-1995 Mazda RX-7, Heater To Pipe-1
• Fits 1991 Chevrolet Corvette, Throttle Body To Intake Manifold
• Fits 1985-1989 Chevrolet Corvette, Throttle Body To Intake Manifold
• Fits 1990 Chevrolet Corvette, Throttle Body To Intake Manifold
• Fits 1981-1987 Isuzu Pickup, N/A
• Fits 1986-1987 Isuzu Trooper, N/A
• Fits 1984 Isuzu Trooper, N/A
• Fits 1986 Chevrolet Camaro, Heater To Engine
• Fits 1986 Pontiac Firebird, Heater To Engine
• Fits 1983-1984 Volkswagen Jetta, Pipe-3 To Pipe-4
• Fits 1983-1984 Volkswagen Rabbit Convertible, Pipe-3 To Pipe-4
• Fits 1982-1983 Nissan 200SX, Heater To Pipe-2
• Fits 1981-1982 Volkswagen Jetta, Pipe To Pipe
• Fits 1980-1982 Volkswagen Rabbit Convertible, Pipe To Pipe