HomeHVAC > Hoses and PipesGates 12277 HVAC Heater Hose - Heater Inlet
Part #: 12277

Gates 12277 HVAC Heater Hose - Heater Inlet

Molded Heater Hose, Heater Inlet
⚙️ 12 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Heater Hose, Heater Inlet
🚗Fitment: Toyota, Highlander
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Gates Molded Heater Hose 12277

The Gates Molded Heater Hose 12277 is designed specifically for Toyota Highlander models, providing reliable HVAC system performance. Constructed from durable EPDM material, this molded heater hose ensures consistent heat transfer and long-lasting service.

  • Made from high-quality EPDM rubber for heat and chemical resistance
  • Molded design for precise fit and leak prevention
  • Centerline length of 14.51 inches (369 mm) for accurate installation
  • Inside diameter of 0.62 inches (16 mm) on both ends
  • Compatible with Toyota Highlander HVAC systems

Detailed Product Description

The Gates Molded Heater Hose 12277 is engineered to meet the specific HVAC requirements of the Toyota Highlander. Its EPDM construction offers excellent resistance to heat, ozone, and automotive fluids, making it suitable for continuous operation within the vehicle's heating system. The molded design ensures a precise fit, reducing the risk of leaks and improving overall system reliability. With a centerline length of 14.51 inches (369 mm) and consistent inside diameters of 0.62 inches (16 mm) on both ends, this hose integrates seamlessly into the HVAC assembly.

About the Molded Heater Hose Product Line

The Molded Heater Hose line by Gates focuses on delivering hoses that are pre-formed to exact specifications, eliminating the need for bending or shaping during installation. This product line is designed to provide a secure and leak-free connection in vehicle heating systems, enhancing durability and performance. The 12277 part is a representative example tailored for the Toyota Highlander, ensuring compatibility and ease of replacement.

Common Applications and Problem Solving

  • Replacement of worn or cracked heater hoses in Toyota Highlander HVAC systems
  • Resolving coolant leaks that affect cabin heating efficiency
  • Preventing overheating issues caused by compromised heater hose integrity
  • Maintaining proper coolant flow within the vehicle’s heating circuit
  • Addressing hose deformation or collapse due to age or heat exposure

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns from hot coolant. Verify the hose routing matches the original configuration to prevent kinks or stress points. Use appropriate clamps to secure the hose ends firmly without over-tightening, which could damage the EPDM material. Inspect adjacent components for wear or damage during replacement to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Gates Molded Heater Hose 12277 is manufactured to meet OEM standards for fit and function. The EPDM material and molded construction contribute to its durability and resistance to common automotive stresses. While specific warranty details are not provided, Gates products typically adhere to industry quality controls to ensure reliable performance in compatible Toyota Highlander models.

BrandGates
Part Number12277
PositionMolded Heater Hose, Heater Inlet
MaterialEpdm
End 1 Inside Diameter.62
End 1 Inside Diameter16
End 2 Inside Diameter.62
End 2 Inside Diameter16
Centerline Length14.51
Centerline Length369
Branch Quantity0
9839Yes
98450
Centerline Length (in)14.51
Centerline Length (mm)369
MoldedYes
Number of Quick Connect Fittings0

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2019ToyotaHighlander3.5LV6GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2018ToyotaHighlander2.7LL4GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2018ToyotaHighlander3.5LV6GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2017ToyotaHighlander2.7LL4GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2017ToyotaHighlander3.5LV6GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2016ToyotaHighlander2.7LL4GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2016ToyotaHighlander3.5LV6GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2015ToyotaHighlander2.7LL4GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2015ToyotaHighlander3.5LV6GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2014ToyotaHighlander2.7LL4GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2014ToyotaHighlander3.5LV6ELECTRIC/GASHeater InletFitment note: With Rear Heater; Molded Heater Hose
2014ToyotaHighlander3.5LV6GASHeater InletFitment note: With Rear Heater; 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:

1327714948S872450E300

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