Gates 18812 HVAC Heater Hose

Gates Molded Heater Hose for Tight Engine Bays

The Gates 18812 molded heater hose is an OEM-style coolant hose built for smaller, tighter engine compartments where a straight hose will not route correctly. It is formed to match the factory shape and is suitable for coolant, water, and air service, with marine application approval.

Compatible With Toyota Sequoia, Toyota Land Cruiser, and Toyota Tundra heater and coolant routing where a molded hose is specified, this EPDM hose supports factory-style fitment in the engine bay. The Gates Molded Heater Hose line focuses on shaped replacement hoses that follow original routing without unnecessary bends or stress points.

Key Features

• Gates part number 18812
• Factory-molded, OEM-style hose shape
• EPDM construction for coolant, water, and air applications
• Small I.D. design for tighter engine compartments
• End I.D.: 0.62 in. (16 mm) at both ends
• Centerline length: 12.9 in. (328 mm)
• Approved for marine applications

Detailed Description

This molded heater hose is built to replace a shaped coolant hose in applications that require precise routing between pipes, the engine, or the water pump. The Gates 18812 follows an OEM-style molded profile to help maintain proper hose alignment in compact engine bays, including Toyota Sequoia, Toyota Land Cruiser, and Toyota Tundra applications listed in the fitment data. The EPDM material is commonly used in cooling-system service for its resistance to heat and coolant exposure.

This part cross-references Continental 63167 for the same application.

What It Helps Solve

• Cracked or leaking molded heater hose sections
• Improper hose routing in tight engine compartments
• Coolant seepage at aged hose bends and formed sections
• Replacement needs for heater, coolant, or water hose routing
• Marine or water-service hose replacement where approved molded hose is required

Installation Notes and Tips

Verify hose routing, end diameters, and centerline length before installation. Match the molded shape to the original hose path so the hose does not twist or kink during service. Inspect adjoining pipes, clamps, and connection points for wear or corrosion before reassembly. For fitment-specific applications, confirm the vehicle year, make, model, and hose position listed in the catalog data.

• Fits 2014-2022 Toyota Sequoia, Pipe-1 To Pipe-2
• Fits 2014-2019 Toyota Land Cruiser, Crossover To Pipe
• Fits 2007-2018 Toyota Tundra, Water Pump To Pipe
• Fits 2008-2013 Toyota Sequoia, Pipe To Engine
• Fits 1989-1992 Dodge Colt, Heater To Thermostat
• Fits 1989-1992 Mitsubishi Mirage, Heater To Thermostat
• Fits 1989 Mitsubishi Mirage, Heater To Pipe-2
• Fits 1987-1988 Dodge Colt, Heater To Tee
• Fits 1985-1987 Mitsubishi Galant, Heater To Pipe-2

Quality Assurance

Gates manufactures molded coolant and heater hoses to OE-style dimensions and routing requirements for service replacement use. Part number 18812 is built as a shaped replacement hose for applications that call for a molded EPDM hose profile.