HomeHVAC > Hoses and PipesGates 18365 HVAC Heater Hose - Thermostat To Transmission Oil Cooler
Part #: 18365

Gates 18365 HVAC Heater Hose - Thermostat To Transmission Oil Cooler

Molded Heater Hose, Thermostat To Transmission Oil Cooler
⚙️ 6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Heater Hose, Thermostat To Transmission Oil Cooler
🚗Fitment: Mazda, 3
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable HVAC Heater Hose for Mazda 3 Vehicles

The Gates Molded Heater Hose 18365 is engineered to provide a precise fit and durable performance for Mazda 3 models. Designed with quality EPDM material, this molded heater hose ensures efficient heat transfer and long-lasting service in your vehicle's HVAC system.

  • Constructed from durable EPDM material for heat and chemical resistance
  • Molded design for exact fit and easy installation
  • End 1 inside diameter: 0.63 inches (16 mm)
  • End 2 inside diameter: 0.72 inches (18 mm)
  • Centerline length: 26.9 inches (683 mm)
  • Compatible with Mazda 3 HVAC systems

About the Gates Molded Heater Hose Product Line

The Molded Heater Hose line by Gates focuses on delivering hoses that are pre-formed to match specific vehicle applications. This reduces installation time and ensures a secure, leak-free connection within the HVAC system. The 18365 part is molded to fit the Mazda 3 precisely, maintaining system integrity and performance.

Detailed Product Description

This HVAC heater hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids. The molded construction of part number 18365 allows it to maintain its shape and fit tightly within the HVAC system of Mazda 3 vehicles. With end diameters of 0.63 inches (16 mm) and 0.72 inches (18 mm), and a centerline length of 26.9 inches (683 mm), this hose is designed to meet exact OEM specifications for reliable operation.

Common Applications and Problem Solving

  • Replacement of cracked or leaking heater hoses in Mazda 3 HVAC systems
  • Restoring proper coolant flow to the heater core
  • Preventing coolant leaks that cause engine overheating
  • Maintaining cabin heating efficiency and comfort
  • Addressing hose degradation due to heat and chemical exposure

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns from hot coolant. Verify hose routing matches the original to prevent kinks or interference with other components. Use appropriate clamps to secure the hose ends firmly. The molded design of the Gates 18365 heater hose simplifies alignment and fitment in the Mazda 3 HVAC system.

Quality Assurance and Warranty

Gates manufactures the Molded Heater Hose 18365 to meet strict quality standards, ensuring durability and performance. The EPDM material and molded construction contribute to a long service life under normal operating conditions. Please refer to Gates' official warranty policy for specific coverage details.

BrandGates
Part Number18365
PositionMolded Heater Hose, Thermostat To Transmission Oil Cooler
MaterialEpdm
End 1 Inside Diameter.63
End 1 Inside Diameter16
End 2 Inside Diameter.72
End 2 Inside Diameter18
Centerline Length26.9
Centerline Length683
Branch Quantity0
9839Yes
98450
Centerline Length (in)26.9
Centerline Length (mm)683
MoldedYes
Number of Quick Connect Fittings0

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2006Mazda32.0LL4GASThermostat To Transmission Oil CoolerMolded Heater Hose
2006Mazda32.3LL4GASThermostat To Transmission Oil CoolerMolded Heater Hose
2005Mazda32.0LL4GASThermostat To Transmission Oil CoolerMolded Heater Hose
2005Mazda32.3LL4GASThermostat To Transmission Oil CoolerMolded Heater Hose
2004Mazda32.0LL4GASThermostat To Transmission Oil CoolerMolded Heater Hose
2004Mazda32.3LL4GASThermostat To Transmission Oil CoolerMolded 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:

1036516563M18365LF7015260E

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