Gates 18801 HVAC Heater Hose

Gates Molded Heater Hose 18801 Overview

The Gates 18801 molded heater hose is an OEM-style coolant hose built for tight engine bays where a straight hose will not route correctly. Made from EPDM and factory-molded to the proper shape, it supports coolant, water, and air transfer in HVAC and engine cooling systems.

Use this molded heater hose for direct replacement service on select Chevrolet Astro, GMC Safari, Toyota Tacoma, Toyota 4Runner, Honda Civic, and other listed applications. Gates 18801 is shaped for the routing demands of smaller, tighter-fitting engine compartments.

Key Features

• Factory-molded hose profile for accurate routing
• EPDM construction for coolant and heater service
• Small I.D. design with 0.62 in. / 16 mm ends
• 7.5 in. centerline length for compact installations
• Suitable for coolant, water, and air applications
• Approved for marine applications
• OEM-style replacement for select HVAC heater hose routes

Product Details

Gates Molded Heater Hose 18801 is part of the Gates Molded Heater Hose line, which focuses on pre-formed hose routing for modern and older vehicles with limited clearance. The molded shape helps match factory hose paths on applications such as 1997-2004 Chevrolet Astro, 1997-2005 GMC Safari, 1995-2004 Toyota Tacoma, and 1996-2002 Toyota 4Runner. It also appears in fitments for Honda Civic, Acura Integra, Volkswagen Golf, Volkswagen Jetta, and other listed vehicles.

This part cross-references Dayco 71311 for the same application.

Common Problems This Hose Can Address

• Cracked or leaking heater hose at the factory bend
• Collapsed hose routing in tight engine compartments
• Restricted coolant flow through a worn HVAC heater hose
• Improper fit from a universal straight hose
• Service replacement for molded coolant hose routing on listed vehicles

Installation Notes and Tips

Verify hose routing, end diameters, and centerline length before installation. This molded hose is 7.5 inches long with 0.62-inch ends, so confirm the factory path on your vehicle before ordering. For best results, compare the original hose shape to the replacement and inspect adjoining clamps, pipes, and heater valves for wear.

Fits 1997-2004 Chevrolet Astro, Valve To Auxiliary Heater Pipe-3; Fits 1997-2005 GMC Safari, Valve To Auxiliary Heater Pipe-3; Fits 1995-2004 Toyota Tacoma, Heater To Valve; Fits 1996-2002 Toyota 4Runner, Heater To Valve; Fits 1992-1997 Honda Civic, Heater To Valve; Fits 1994-1999 Acura Integra, Heater To Valve-1.

Quality Assurance

Gates manufactures this molded heater hose as an OEM-style replacement built to match factory routing requirements for the listed applications. The EPDM construction and molded profile support dependable service in HVAC and coolant hose use.