OE Quality
60-Day Returns

Gates 18045 HVAC Heater Hose - Heater Inlet (Front) or Restrictor To Engine
Gates 18045 Molded Heater Hose for Honda Civic
The Gates 18045 Molded Heater Hose is an OEM-style coolant hose built for tight engine bays and factory routing. It is formed to match the original shape for select Honda Civic heater circuit applications, with EPDM construction for coolant, water, and air service.
Key Features
- Factory-molded hose profile for precise routing in compact engine compartments
- EPDM construction for use with coolant, water, and air
- Small inside diameter of 0.63 in. (16 mm) at both ends
- Centerline length of 11.5 in. (292 mm)
- Approved for marine applications
- Gates Molded Heater Hose line for OE-style replacement fitment
Product Details
Built as a molded HVAC heater hose, Gates part number 18045 follows the shape needed for restricted routing around the engine. It is listed for 2010-2011 Honda Civic heater inlet (front) applications and 2006-2009 Honda Civic restrictor to engine applications. This makes the Gates 18045 a direct-fit service part for Honda Civic heater hose replacement where the original hose uses a molded configuration.
This part cross-references Bosch 18045 for the same application.
Common Problems It Can Address
- Cracked or hardened heater hose material
- Coolant seepage at a molded hose section
- Incorrect hose routing in a tight engine compartment
- Restricted heater circuit flow caused by a damaged hose
- Replacement needs for Honda Civic heater inlet or restrictor-to-engine routing
Installation Notes and Tips
Verify the hose path, end diameters, and centerline length before installation. Match the molded shape to the original routing on the vehicle and confirm the connection points on the heater circuit. For best results, inspect adjoining clamps, fittings, and nearby coolant components during service.
Quality Assurance
Gates manufactures this molded coolant hose in an OE-style format for factory-like fit and routing. The EPDM material and molded construction support dependable service in coolant, water, air, and marine applications.
| Brand | Gates |
|---|---|
| Part Number | 18045 |
| Position | Molded Heater Hose, Heater Inlet (Front) and Restrictor To Engine |
| Material | Epdm |
| End 1 Inside Diameter | .63 |
| End 1 Inside Diameter | 16 |
| End 2 Inside Diameter | .63 |
| End 2 Inside Diameter | 16 |
| Centerline Length | 11.5 |
| Centerline Length | 292 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
| Centerline Length (in) | 11.5 |
| Centerline Length (mm) | 292 |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2011 | Honda | Civic | 2.0L | L4 | GAS | Heater Inlet (Front) | Molded Heater Hose |
| 2010 | Honda | Civic | 2.0L | L4 | GAS | Heater Inlet (Front) | Molded Heater Hose |
| 2009 | Honda | Civic | 2.0L | L4 | GAS | Restrictor To Engine | Molded Heater Hose |
| 2008 | Honda | Civic | 2.0L | L4 | GAS | Restrictor To Engine | Molded Heater Hose |
| 2007 | Honda | Civic | 2.0L | L4 | GAS | Restrictor To Engine | Molded Heater Hose |
| 2006 | Honda | Civic | 2.0L | L4 | GAS | Restrictor To Engine | 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.