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Gates 18857 HVAC Heater Hose - Pipe To Engine or Valve To Engine
Overview of Gates Molded Heater Hose 18857
The Gates Molded Heater Hose 18857 is designed for reliable HVAC system performance in select Honda and Toyota vehicles. Engineered with durable EPDM material, this molded heater hose ensures consistent heat transfer and long-lasting service in your vehicle's heating system.
- Constructed from high-quality EPDM material for heat and chemical resistance
- Molded design for precise fit and secure installation
- Centerline length of 18.3 inches (465 mm) for accurate replacement
- Inside diameter of 0.62 inches (16 mm) on both ends
- Compatible with Honda Civic and Toyota Prius models including Prius Plug-In, Prius Prime, and Prius V
About the Molded Heater Hose Product Line
The Molded Heater Hose line by Gates focuses on delivering pre-formed hoses that match original equipment specifications. This product line is engineered to provide a direct fit without the need for modifications, reducing installation time and ensuring proper coolant flow within the HVAC system. The molded construction of the 18857 part number supports consistent performance and durability in demanding automotive environments.
Detailed Product Description
The Gates Molded Heater Hose 18857 features an EPDM rubber composition known for its resistance to heat, ozone, and automotive fluids. Both ends of the hose have an inside diameter of 0.62 inches (16 mm), making it suitable for precise connections in the heating system. With a centerline length of 18.3 inches (465 mm), this molded hose is designed to fit specific routing paths in Honda Civic and Toyota Prius models, ensuring proper coolant circulation and heater core function.
Common Applications and Issues Addressed
- Replacement of worn or cracked heater hoses causing coolant leaks
- Resolving heater core flow restrictions due to damaged hoses
- Preventing overheating issues related to faulty HVAC hose connections
- Maintaining proper cabin heating performance in Honda Civic and Toyota Prius vehicles
- Addressing coolant loss from deteriorated or collapsed heater hoses
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. Use appropriate clamps to secure the hose ends and check for leaks after installation. The molded design of the Gates 18857 heater hose simplifies alignment and fitment in compatible Honda and Toyota models.
Quality Assurance and Warranty
Gates manufactures the Molded Heater Hose 18857 to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction contribute to long service life under typical operating conditions. Please refer to Gates' official warranty policy for specific coverage details related to this part number.
| Brand | Gates |
| Part Number | 18857 |
| Position | Molded Heater Hose, Pipe To Engine |
| 0 | |
| Yes | |
| Branch Quantity | 0 |
| Centerline Length | 18.3 |
| Centerline Length | 465 |
| Centerline Length (in) | 18.3 |
| Centerline Length (mm) | 465 |
| End 1 Inside Diameter | .62 |
| End 1 Inside Diameter | 16 |
| End 2 Inside Diameter | .62 |
| End 2 Inside Diameter | 16 |
| Material | EPDM |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 27 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2017 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2017 | Toyota | Prius Prime | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2017 | Toyota | Prius V | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2016 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2016 | Toyota | Prius V | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2015 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2015 | Toyota | Prius Plug-In | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2015 | Toyota | Prius V | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2014 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2014 | Toyota | Prius Plug-In | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2014 | Toyota | Prius V | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2013 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2013 | Toyota | Prius Plug-In | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2013 | Toyota | Prius V | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2012 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2012 | Toyota | Prius Plug-In | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2012 | Toyota | Prius V | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2011 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 2010 | Toyota | Prius | 1.8L | L4 | ELECTRIC/GAS | Pipe To Engine | Molded Heater Hose |
| 1987 | Honda | Civic | 1.3L | L4 | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 1987 | Honda | Civic | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose | ||
| 1987 | Honda | Civic | 1.5L | L4 | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 1986 | Honda | Civic | 1.3L | L4 | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 1986 | Honda | Civic | 1.5L | L4 | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 1986 | Honda | Civic | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose | ||
| 1985 | Honda | Civic | 1.3L | L4 | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 1985 | Honda | Civic | 1.5L | L4 | GAS | Valve To Engine | Radiator and HVAC compatible coolant and heater hose.; 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.