Gates 18100 HVAC Heater Hose

Gates 18100 Molded Heater Hose Overview

The Gates 18100 molded heater hose is an OEM-style coolant hose built for tight engine bays and precise routing. Its factory-molded shape helps it follow the original path in applications such as Honda Civic, Mazda 626, and Mitsubishi Eclipse heater and throttle body coolant circuits.

Gates Molded Heater Hose line focuses on small I.D. molded coolant hoses for modern and older vehicles where space is limited and routing accuracy matters. This hose is made from EPDM and is approved for coolant, water, air, and marine applications.

Key Features

• Factory-molded, OE-style shape for accurate hose routing
• EPDM construction for coolant and heater service
• Small inside diameter: 7 mm / 0.28 in at both ends
• Centerline length: 216 mm / 8.5 in
• Suitable for coolant, water, and air applications
• Approved for marine applications
• Gates part number 18100 for direct catalog lookup

Detailed Description

Gates 18100 is a molded HVAC heater hose made to match compact factory routing in engine compartments where straight hose sections will not follow the original path. The molded EPDM construction supports coolant transfer in heater and throttle body circuits, and the small I.D. dimensions help it align with the original hose size used in many import applications. Search terms such as molded heater hose for 2006-2012 Mitsubishi Eclipse throttle body inlet, 1998-1999 Mazda 626 reservoir to intake manifold, or 2007-2013 Suzuki SX4 throttle body to engine all point to the same OE-style routing need. This part cross-references Bosch 18100 for the same application.

What It Helps Fix

• Cracked or leaking molded heater hose sections
• Collapsed hose routing in tight engine compartments
• Coolant seepage at throttle body or heater hose connections
• Incorrect hose shape after prior repair work
• Restricted coolant flow caused by aged EPDM hose material

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length before installation. Confirm the vehicle-specific position listed in the fitment data, such as throttle body inlet, throttle body outlet, reservoir to pipe, or pipe to engine. For best results, compare the original hose shape to the molded profile before routing and clamp the hose only after it is fully seated on clean fittings.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement part for applications that require accurate fit and durable EPDM construction. Part number 18100 is cataloged for direct replacement use across multiple import vehicle platforms, including Honda Civic, Mazda 626, and Mitsubishi Eclipse applications.

Fitment

• Fits 2007-2013 Suzuki SX4, throttle body to engine
• Fits 2012 Suzuki SX4 Crossover, throttle body to engine
• Fits 2006-2012 Mitsubishi Eclipse, throttle body outlet
• Fits 2006-2012 Mitsubishi Eclipse, throttle body inlet
• Fits 2006-2009 Saab 9-3, reservoir to pipe-1
• Fits 2004-2007 Mitsubishi Galant, throttle body inlet
• Fits 2007 Mitsubishi Galant, throttle body outlet
• Fits 1996-2004 Acura RL, pipe-2 to throttle body
• Fits 2001-2002 Mazda 626, exhaust gas recirculation valve to thermostat
• Fits 1998-1999 Mazda 626, exhaust gas recirculation valve to thermostat
• Fits 2000 Mazda 626, sensor to thermostat
• Fits 1998-1999 Mazda 626, reservoir to intake manifold
• Fits 1998 Honda Civic, throttle body to pipe-1
• Fits 1997 Kia Sephia, throttle body to pipe-3
• Fits 1993-1995 Mazda MX-3, throttle body to valve
• Fits 1989-1994 Mazda MPV, throttle body to pipe
• Fits 1993-1994 Mazda MPV, intake manifold to throttle body
• Fits 1993 Mazda B2200, pipe to engine
• Fits 1990-1993 Mazda B2200, throttle body to intake manifold
• Fits 1993 Mazda B2600, intake manifold to throttle body
• Fits 1990 Mazda B2600, intake manifold to throttle body
• Fits 1987-1992 Mazda B2200, intake manifold to pipe
• Fits 1990-1992 Mazda B2200, pipe to engine
• Fits 1991-1992 Mazda B2600, intake manifold to throttle body
• Fits 1989-1992 Mazda MPV, intake manifold to throttle body
• Fits 1992 Mazda MX-3, throttle body to valve