Gates 18071 HVAC Heater Hose

Gates Molded Heater Hose 18071

Gates 18071 is a molded HVAC heater hose built for tight engine bays where a factory-shaped coolant line is needed. It uses EPDM construction and an OEM-style molded profile to support coolant, water, and air routing in a range of vehicle applications, including marine use.

Key Features

• Factory-molded heater hose for a direct OE-style shape
• EPDM material for coolant, water, and air service
• Small inside diameters: 16 mm at one end and 19 mm at the other
• Centerline length: 396 mm (15.6 in)
• Fits tighter engine compartments where formed routing matters
• Gates Molded Heater Hose line for HVAC and coolant hose replacement

Product Details

This molded coolant hose is built around the Gates Molded Heater Hose product line, which focuses on formed replacement hoses for vehicles with compact routing paths. Part number 18071 follows the original hose shape to help maintain proper line routing in HVAC and cooling system service. It is a practical replacement for applications such as Audi A6, Audi A6 Quattro, Volkswagen Passat, and select Ford and Mercury heater hose routes where a molded hose is specified.

This part cross-references Bosch 18071 and Dayco 86099 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened heater hose material
• Coolant leaks at a formed hose section
• Poor hose routing in a confined engine compartment
• Replacement needs for radiator and HVAC coolant hose service
• Service on vehicles requiring a molded heater hose shape

Installation Notes and Tips

• Verify end sizes and centerline length before installation.
• Match the molded shape to the original hose routing for proper fit.
• Check adjacent clamps, pipes, and fittings for wear before reassembly.
• Use the vehicle-specific fitment list to confirm the correct position, such as Pipe-5 To Pipe-4, Heater To Pipe-1, or Pipe To Thermostat.
• For fitment-based searches, this hose is listed for 1983-2001 applications across Ford, Mercury, Lincoln, Audi, Volkswagen, and Toyota models.

Quality Assurance

Gates is a recognized supplier of molded coolant and heater hose products for automotive and marine service. Part number 18071 is built as an OEM-style replacement hose for applications that require a formed EPDM hose profile.