Gates 18011 HVAC Heater Hose

Gates 18011 Molded Heater Hose Overview

The Gates 18011 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 and factory-molded for a precise shape, it serves coolant, water, and air applications and is also approved for marine use.

For vehicles such as the Mazda Protege, Mazda 626, and Suzuki Grand Vitara, this molded hose supports the heater and throttle body coolant routing found in many compact engine layouts. Gates Molded Heater Hose parts are built around fitment accuracy, and the 18011 follows that approach with a formed profile that matches the application.

Key Features

• Gates Molded Heater Hose, part number 18011
• EPDM construction for coolant and heater hose service
• Factory-molded shape for smaller, tighter engine bays
• OEM-style routing for direct replacement applications
• Suitable for coolant, water, and air applications
• Approved for marine applications
• Centerline length: 15.6 in. (396 mm)
• End I.D.: 0.25 in. (6 mm) at both ends

Detailed Description

The Gates 18011 is a molded HVAC heater hose built to follow the original hose path in applications where space is limited and a formed hose is required. Its EPDM material is selected for fluid-handling service, while the molded design helps maintain the correct routing between components such as the throttle body, engine, thermostat, intake manifold, or heater circuit, depending on the vehicle.

This part number is listed across a wide range of import and compact-platform applications, including Mazda Protege, Mazda 626, Mazda Miata, Suzuki XL-7, and Suzuki Grand Vitara. It is also cross-referenced to Baldwin 18011 for the same application.

Vehicle Fitment

• Fits 2004-2006 Suzuki XL-7, throttle body to engine.
• Fits 1999-2005 Suzuki Grand Vitara, heater to engine.
• Fits 2001-2004 Chevrolet Tracker, heater to engine.
• Fits 2004 Suzuki Vitara, heater to engine.
• Fits 2001-2003 Mazda Protege, pipe-1 to throttle body.
• Fits 2002-2003 Mazda Protege5, pipe-1 to throttle body.
• Fits 2000-2002 Kia Spectra, pipe-4 to throttle body.
• Fits 2001-2002 Mazda 626, water pump pipe to throttle body.
• Fits 1998 Mazda 626, water pump pipe to throttle body.
• Fits 1998-2002 Mazda 626, throttle body to thermostat.
• Fits 2000-2002 Mazda 626, reservoir to intake manifold.
• Fits 1998-2001 Kia Sephia, pipe-4 to throttle body.
• Fits 1999-2000 Mazda 626, water pump to throttle body.
• Fits 1999-2000 Mazda Protege, pipe to throttle body.
• Fits 1999-2000 Mazda Protege, throttle body to thermostat.
• Fits 1995-1997 Mazda Miata, pipe-3 to throttle body.
• Fits 1994-1996 Mitsubishi Montero, throttle body to engine; protective sleeve required, cut to fit.
• Fits 1990-1994 Mazda Miata, intake manifold to throttle body.
• Fits 1994 Nissan Sentra, valve to pipe.
• Fits 1992-1994 Toyota Tercel, pipe to throttle body.
• Fits 1989-1990 Toyota Tercel, N/A.
• Fits 1988-1989 Mazda 323, throttle body to pipe.

Common Problems This Hose Can Address

• Cracked or hardened molded heater hose
• Coolant leaks at a formed hose routing point
• Incorrect hose shape in a tight engine compartment
• Degraded throttle body or heater circuit hose routing
• Replacement needs for radiator and HVAC coolant hose paths

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length before installation. This molded hose is listed for multiple positions, so match the vehicle, engine layout, and hose path exactly to the original application. On the 1994-1996 Mitsubishi Montero listing, a protective sleeve is required and the hose is cut to fit.

Inspect adjoining clamps, pipes, and fittings for wear before installing the new hose. Confirm that the hose follows the original bend pattern without twisting so coolant flow and clearance are maintained.

Quality Assurance

Gates supplies molded coolant and heater hose products in OEM-style configurations for application-specific replacement. The 18011 is built from EPDM and formed to match the routing demands of compact engine compartments, with marine application approval noted by the manufacturer.