HomeHVAC > Hoses and PipesGates 18078 HVAC Heater Hose
Part #: 18078

Gates 18078 HVAC Heater Hose

Molded Heater Hose, Valve To Engine, Heater To Pipe, Heater To Pipe-1, Exhaust Gas Recirculation Cooler To Pipe, Pipe To Exhaust Gas Recirculation Cooler, Heater To Water Pump, Cooler To Engine, Pipe To Water Pump, Heater To Thermostat, Oil Cooler To Engine, Pipe To Cooler, and Tee To Cooler
⚙️ 55 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Heater Hose, Valve To Engine, Heater To Pipe, Heater To Pipe-1, Exhaust Gas Recirculation Cooler To Pipe, Pipe To Exhaust Gas Recirculation Cooler, Heater To Water Pump, Cooler To Engine, Pipe To Water Pump, Heater To Thermostat, Oil Cooler To Engine, Pipe To Cooler, and Tee To Cooler
🚗Fitment: Ford, Jeep, Lincoln, Mercury, and Plymouth, Capri, Continental, Cougar, Expo, Grand Cherokee, Grand Marquis, LTD, Marquis, Mustang, and Thunderbird
🔄Easy Returns — Return within 60 days for a full refund
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Reliable HVAC Heater Hose for Ford, Jeep, Lincoln, and More

The Gates Molded Heater Hose 18078 is engineered to provide durable and precise fitment for select Ford, Jeep, Lincoln, Mercury, and Plymouth vehicles. Designed with quality EPDM material, this molded heater hose ensures efficient heat transfer and long-lasting performance in your vehicle's HVAC system.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Molded design for exact fit and easy installation
  • End 1 inside diameter: 0.62 inches (16 mm)
  • End 2 inside diameter: 0.75 inches (19 mm)
  • Centerline length: 41.6 inches (1057 mm)
  • Compatible with Ford Mustang, Thunderbird, Jeep Grand Cherokee, Lincoln Continental, and more

About the Gates Molded Heater Hose Product Line

The Molded Heater Hose line by Gates focuses on delivering pre-formed hoses that match original equipment specifications. This eliminates the need for bending or cutting, reducing installation time and potential leaks. The molded construction of part number 18078 ensures a precise fit for HVAC systems in various Ford, Jeep, Lincoln, Mercury, and Plymouth models.

Detailed Product Description

This HVAC heater hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. The molded design of the Gates 18078 heater hose provides a reliable seal and consistent flow within the heating system. With a centerline length of 41.6 inches (1057 mm), and differing inside diameters on each end (0.62 inches/16 mm and 0.75 inches/19 mm), this hose is engineered to fit specific OEM configurations without modification.

Common Applications and Issues Addressed

  • Replacement of cracked or leaking heater hoses in Ford Mustang and Thunderbird HVAC systems
  • Restoring proper coolant flow in Jeep Grand Cherokee heating circuits
  • Resolving heater core connection leaks in Lincoln Continental and Mercury Marquis models
  • Eliminating hose collapse or blockage affecting cabin heat delivery
  • Upgrading worn or deteriorated hoses in Plymouth Capri and Ford LTD vehicles

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns from hot coolant. Verify hose routing matches the original configuration to prevent kinks or interference with other components. The molded design of the Gates 18078 heater hose simplifies installation by fitting directly without trimming or bending. Use appropriate clamps to secure each end and check for leaks after installation.

Quality Assurance and Warranty

Gates Molded Heater Hose 18078 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material provides resistance to heat and automotive fluids, contributing to a longer service life. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in material and workmanship.

BrandGates
Part Number18078
PositionMolded Heater Hose, Valve To Engine, Heater To Pipe, Heater To Pipe-1, Exhaust Gas Recirculation Cooler To Pipe, Pipe To Exhaust Gas Recirculation Cooler, Heater To Water Pump, Cooler To Engine, Pipe To Water Pump, Heater To Thermostat, Oil Cooler To Engine, Pipe To Cooler, and Tee To Cooler
MaterialEpdm
End 1 Inside Diameter.62
End 1 Inside Diameter16
End 2 Inside Diameter.75
End 2 Inside Diameter19
Centerline Length1057
Centerline Length41.6
Branch Quantity0
9839Yes
98450
Centerline Length (in)41.6
Centerline Length (mm)1057
MoldedYes
Number of Quick Connect Fittings0

This part fits 55 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1998JeepGrand Cherokee4.0LL6GASHeater To ThermostatRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1997JeepGrand Cherokee4.0LL6GASHeater To ThermostatRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1996JeepGrand Cherokee4.0LL6GASHeater To ThermostatRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1995JeepGrand Cherokee4.0LL6GASHeater To ThermostatRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1994JeepGrand Cherokee4.0LL6GASHeater To ThermostatRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1993JeepGrand Cherokee4.0LL6GASHeater To ThermostatRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1989PlymouthExpo2.2LL4GASHeater To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1989PlymouthExpo2.2LL4GASValve To EngineCut-to-size heater hose suitable for air conditioning systems.; Molded Heater Hose
1987FordCougar3.8LV6GASHeater To PipeProtective sleeve required; Cut to fit.; Molded Heater Hose
1987FordThunderbird3.8LV6GASHeater To PipeProtective sleeve required; Cut to fit.; Molded Heater Hose
1987LincolnContinental5.0LV8GASOil Cooler To EngineRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1987MercuryCougar3.8LV6GASHeater To PipeProtective sleeve required; Cut to fit.; Molded Heater Hose
1986FordCougar3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1986FordLTD3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1986FordThunderbird3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1986LincolnContinental5.0LV8GASOil Cooler To EngineRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1986MercuryCougar3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1986MercuryMarquis3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1985FordCougar3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1985FordLTD3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1985FordMustang3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1985FordThunderbird2.3LL4GASExhaust Gas Recirculation Cooler To PipeRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1985FordThunderbird3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1985FordThunderbird5.0LV8GASPipe To Exhaust Gas Recirculation CoolerW/Auto. Temp. Control; Cut to fit; Molded Heater Hose
1985LincolnContinental5.0LV8GASOil Cooler To EngineRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1985MercuryCapri3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1985MercuryCougar2.3LL4GASExhaust Gas Recirculation Cooler To PipeRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1985MercuryCougar3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1985MercuryCougar5.0LV8GASPipe To CoolerW/Auto. Temp. Control; Cut to fit; Molded Heater Hose
1985MercuryMarquis3.8LV6GASHeater To Pipe-1Protective sleeve required; Cut to fit.; Molded Heater Hose
1984FordLTD3.8LV6GASHeater To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984FordMustang3.8LV6GASHeater To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984FordThunderbird2.3LL4GASExhaust Gas Recirculation Cooler To PipeW/Auto. Temp. Control; Cut to fit; Molded Heater Hose
1984FordThunderbird3.8LV6GASHeater To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984FordThunderbird5.0LV8GASCooler To EngineRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984LincolnContinental5.0LV8GASOil Cooler To EngineRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984MercuryCapri3.8LV6GASHeater To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984MercuryCougar2.3LL4GASExhaust Gas Recirculation Cooler To PipeW/Auto. Temp. Control; Cut to fit; Molded Heater Hose
1984MercuryCougar3.8LV6GASHeater To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984MercuryCougar5.0LV8GASCooler To EngineRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1984MercuryGrand Marquis5.0LV8GASTee To CoolerW/Auto. Temp. Control; Cut to fit; Molded Heater Hose
1984MercuryMarquis3.8LV6GASHeater To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1983FordLTD3.3LL6GASPipe To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1983FordLTD3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose
1983FordMustang3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose
1983FordThunderbird2.3LL4GASExhaust Gas Recirculation Cooler To PipeW/Auto. Temp. Control; Cut to fit; Molded Heater Hose
1983FordThunderbird3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose
1983FordThunderbird5.0LV8GASHeater To Pipe-1W/Auto. Temp. Control; Cut to fit; Molded Heater Hose
1983LincolnContinental5.0LV8GASOil Cooler To EngineRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1983MercuryCapri3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose
1983MercuryCougar3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose
1983MercuryMarquis3.3LL6GASPipe To Water PumpRadiator and HVAC compatible coolant and heater hose.; Molded Heater Hose
1983MercuryMarquis3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose
1982FordThunderbird3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose
1982MercuryCougar3.8LV6GASHeater To Water PumpProtective sleeve required; Cut to fit.; Molded Heater Hose

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1007818007L18078520052045200649055036145550364905503649163107631096444087611E35Y 18472 CE87611

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.