Gates 18336 HVAC Heater Hose - Thermostat To Pipe or Thermostat To Pipe-1

Gates Molded Heater Hose for Toyota Applications

The Gates 18336 molded heater hose is a factory-molded, OE-style coolant hose built for tight engine bays where a straight hose will not route correctly. Made from EPDM, it is suitable for coolant, water, and air service, and it is also approved for marine applications.

For Toyota 4Runner, Tacoma, FJ Cruiser, and Tundra applications, this molded hose follows the original routing to help maintain proper hose alignment around the thermostat and pipe connection points.

Key Features

• Gates Molded Heater Hose, part number 18336
• EPDM construction for coolant, water, and air applications
• Factory-molded shape for compact engine compartments
• OEM-style routing for a direct-fit replacement approach
• Approved for marine applications
• End I.D.: 0.63 in. / 16 mm
• Centerline length: 8.7 in. / 221 mm

Detailed Description

The Gates 18336 is a molded HVAC heater hose designed to match the shape needed in modern, tighter engine compartments. Its EPDM material supports heat and fluid exposure common in cooling-system service, while the molded profile helps preserve the original hose path. This makes it a practical replacement for Toyota 4Runner, Tacoma, FJ Cruiser, and Tundra models where the hose runs from the thermostat to the pipe.

This part cross-references Dorman - HELP 88528 for the same application.

What It Helps Solve

• Coolant leaks caused by cracked or aged heater hose material
• Poor hose routing after a previous repair or replacement
• Fitment issues in tight engine compartments where straight hose will not conform
• Restricted coolant flow from a deteriorated or collapsed hose section
• Service replacement needs for thermostat-to-pipe hose routing on Toyota models

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length before installation. This molded hose is listed for 2021 Toyota 4Runner, 2014-2018 Toyota 4Runner thermostat to pipe, 2014-2015 Toyota Tacoma thermostat to pipe-1, 2005-2010 Toyota Tacoma thermostat to pipe-1, 2011-2014 Toyota FJ Cruiser thermostat to pipe-1, 2011-2013 Toyota Tundra thermostat to pipe-1, and 2003-2009 Toyota 4Runner thermostat to pipe-1. Confirm the routing matches the original hose before service.

Quality Assurance

Gates manufactures molded coolant hoses to OE-style dimensions and routing standards for service replacement use. Part number 18336 is built to support accurate fitment on the listed Toyota applications.