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Gates 18489 HVAC Heater Hose - Heater Inlet (Right)
Gates 18489 Molded Heater Hose for Smart Fortwo
The Gates 18489 molded heater hose is an OEM-style coolant hose built for tight engine bays and small inside-diameter routing. It is formed to match factory-style bends for the heater inlet on select Smart Fortwo models, helping maintain proper coolant flow in compact HVAC and cooling system layouts.
Key Features
- Factory-molded heater hose for precise routing in confined engine compartments
- EPDM construction for coolant, water, and air service
- Small inside diameters: 14 mm on one end and 18 mm on the other
- Centerline length: 312 mm (12.3 in)
- Approved for marine applications
- Direct-fit style for the heater inlet (right) on select Smart Fortwo vehicles
Product Details
Gates Molded Heater Hose line products are built around OE-style shaping and fitment for modern vehicles with tighter packaging around the engine and HVAC system. Part number 18489 is a molded coolant hose made from EPDM and shaped to follow the original routing used on the heater inlet side. It is listed for 2008 Smart Fortwo and 2010-2014 Smart Fortwo, heater inlet (right). This part cross-references CSF 10489 for the same application.
For owners searching for a Smart Fortwo heater hose replacement, Gates 18489 provides the molded profile needed to connect the cooling circuit without forcing a universal hose into a factory-shaped path. The result is a cleaner fit for the Smart Fortwo cooling and heater hose layout.
What This Hose Helps Address
- Cracked or aged heater hose material
- Coolant leaks at the heater inlet routing
- Poor hose alignment in tight engine compartments
- Incorrect bend shape from a straight universal hose
- Restricted coolant circulation caused by a damaged hose
Installation Notes and Tips
Verify the hose routing, end diameters, and centerline length before installation. Confirm the application as 2008 Smart Fortwo or 2010-2014 Smart Fortwo, heater inlet (right), and compare the original hose shape to the molded profile of Gates 18489. Inspect adjoining clamps, fittings, and coolant passages for wear or contamination before reassembly.
Quality Assurance
Gates is known for OE-style hose engineering and molded replacement parts that follow factory routing requirements. The EPDM construction and molded design support consistent fitment for the specified Smart Fortwo applications.
| Brand | Gates |
|---|---|
| Part Number | 18489 |
| Position | Molded Heater Hose, Heater Inlet (Right) |
| Material | Epdm |
| End 1 Inside Diameter | .55 |
| End 1 Inside Diameter | 14 |
| End 2 Inside Diameter | .70 |
| End 2 Inside Diameter | 18 |
| Centerline Length | 12.3 |
| Centerline Length | 312 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
| Centerline Length (in) | 12.3 |
| Centerline Length (mm) | 312 |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2014 | Smart | Fortwo | 1.0L | L3 | GAS | Heater Inlet (Right) | Molded Heater Hose |
| 2013 | Smart | Fortwo | 1.0L | L3 | GAS | Heater Inlet (Right) | Molded Heater Hose |
| 2012 | Smart | Fortwo | 1.0L | L3 | GAS | Heater Inlet (Right) | Molded Heater Hose |
| 2011 | Smart | Fortwo | 1.0L | L3 | GAS | Heater Inlet (Right) | Molded Heater Hose |
| 2010 | Smart | Fortwo | 1.0L | L3 | GAS | Heater Inlet (Right) | Molded Heater Hose |
| 2008 | Smart | Fortwo | 1.0L | L3 | GAS | Heater Inlet (Right) | 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.