Gates 18367 Engine Coolant Bypass Hose

Gates 18367 Molded Heater Hose Overview

The Gates 18367 molded heater hose is an OEM-style coolant bypass hose built for tight engine bays where a formed hose is required. Made from EPDM, it is suitable for coolant, water, and air service, and it is also approved for marine applications.

This molded heater hose line from Gates focuses on factory-shaped routing for smaller engine compartments, helping maintain proper hose alignment in applications such as the Mazda 3 and Mazda 5. If you need a formed replacement for a coolant bypass path, Gates 18367 provides the correct molded profile and small inside diameter fit.

Key Features

• Brand: Gates Molded Heater Hose
• Part number: 18367
• Engine coolant bypass hose application
• EPDM construction for coolant, water, and air service
• Factory-molded, OEM-style shape for compact engine compartments
• End 1 inside diameter: 15 mm (0.58 in)
• End 2 inside diameter: 15 mm (0.58 in)
• Centerline length: 516 mm (20.3 in)
• Molded hose design with no quick connect fittings

Detailed Description

Gates 18367 is a molded coolant bypass hose engineered to match the routing needs of modern, tightly packaged engine compartments. Its EPDM material supports coolant transfer while also handling water and air applications, making it a practical replacement when the original hose follows a formed path. The 15 mm ends and 516 mm centerline length are important reference points for selecting the correct hose geometry.

For drivers and technicians servicing a Mazda 3, Mazda 3 Sport, or Mazda 5, this molded heater hose helps restore the original coolant hose routing without forcing a straight hose into a curved application. The Gates 18367 part number is commonly used when an OE-style molded replacement is needed for the coolant bypass circuit.

This part cross-references Dixie Electric Ltd 10367 for the same application.

Vehicle Fitment

• Fits 2014-2017 Mazda 5, N/A
• Fits 2007-2009 Mazda 3, N/A
• Fits 2009 Mazda 3 Sport, N/A

Common Uses

• Replacing a cracked or hardened coolant bypass hose
• Restoring factory-style hose routing in a compact engine bay
• Addressing coolant seepage at a molded hose section
• Correcting hose fitment issues caused by improper straight-hose substitutions
• Servicing heater or coolant transfer paths on Mazda 3 and Mazda 5 applications

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length before installation. Because this is a molded hose, match the original bend shape and orientation to the vehicle’s coolant path. Inspect adjoining fittings and clamps for wear, corrosion, or damage before installing the replacement hose.

Quality Assurance

Gates manufactures this molded heater hose as an OEM-style replacement built to the specified dimensions and material requirements for the listed applications. The design supports consistent fitment in the confirmed Mazda 3, Mazda 3 Sport, and Mazda 5 vehicle coverage.