Gates 18040 HVAC Heater Hose - Engine To Tee-1 or Tee-1 To Engine

Gates Molded Heater Hose 18040 Overview

The Gates 18040 molded heater hose is an OEM-style coolant hose built for smaller, tighter engine compartments. Made from EPDM and factory-molded for a precise shape, it is suited for coolant, water, and air routing in HVAC and engine cooling systems.

For Toyota Sequoia and Acura MDX applications, this molded heater hose supports direct replacement needs where a formed hose is required. The Gates Molded Heater Hose line focuses on OE-style fitment and routing, helping maintain proper hose alignment in compact engine bays.

Key Features

• Part number: 18040
• Factory-molded, OE-style hose shape
• EPDM construction for coolant, water, and air service
• End inside diameter: 0.63 in. / 16 mm at both ends
• Centerline length: 12.5 in. / 318 mm
• Approved for marine applications
• Compatible with HVAC heater hose routing where a molded hose is specified

Detailed Description

Gates 18040 is a molded heater hose designed for applications that require a formed hose with the correct routing and compact fit. Its EPDM material is commonly used in cooling-system service, and the molded profile helps it follow the intended path in tight engine compartments. This part number is listed for 2022 Toyota Sequoia, Tee-1 To Engine; 2012-2021 Toyota Sequoia, Tee-1 To Engine; and 2003-2005 Acura MDX, Engine To Tee-1. The Gates 18040 molded heater hose is also referenced under Bosch 18040 for the same application.

What It Helps Address

• Cracked or deteriorated heater hose routing
• Improper hose fit in compact engine bays
• Coolant transfer issues in HVAC heater hose circuits
• Water or air hose routing where a molded shape is required
• Marine service needs that call for an approved molded hose

Installation Notes and Tips

Verify end diameters, centerline length, and routing before installation. Match the hose path to the vehicle’s original layout and confirm the position listed for your application: Fits 2022 Toyota Sequoia, Tee-1 To Engine; Fits 2012-2021 Toyota Sequoia, Tee-1 To Engine; Fits 2003-2005 Acura MDX, Engine To Tee-1. Check surrounding components for clearance in tight spaces and ensure the hose is seated correctly at both ends.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement part line for formed coolant hose applications. The molded construction and EPDM material support consistent routing and service fitment for the listed vehicles.