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Gates 12325 HVAC Heater Hose - Heater Inlet
Gates 12325 Molded Heater Hose Overview
The Gates 12325 molded heater hose is an OEM-style coolant hose built for tight engine compartments where a straight hose will not route correctly. It is formed to match factory-style bends and is suitable for coolant, water, and air service, with marine application approval.
Compatible with 2016 Scion iM heater inlet and 2017-2018 Toyota Corolla iM heater inlet, this molded heater hose supports clean routing in compact HVAC and cooling layouts. The EPDM construction is selected for durability in underhood fluid and temperature exposure.
Key Features
- Factory-molded shape for tighter engine bay routing
- OEM-style replacement hose for heater inlet service
- EPDM material for coolant, water, and air applications
- Approved for marine applications
- End I.D. measures 0.62 in. / 16 mm at both ends
- Centerline length measures 16.13 in. / 410 mm
Product Details
Gates Molded Heater Hose line products are built for applications that require a formed hose profile rather than a universal straight section. Part number 12325 follows the factory-style molded layout needed in smaller, tighter-fitting engine compartments, helping maintain proper hose routing and connection alignment. For buyers searching for a heater hose for 2017-2018 Toyota Corolla iM heater inlet or a replacement hose for 2016 Scion iM heater inlet, this part number 12325 matches the listed fitment and dimensions.
This part cross-references BBB Industries 13325 for the same application.
Common Problems This Hose Can Address
- Cracked or aged heater hose material
- Improper routing from a previous straight-hose repair
- Restricted fitment in compact engine compartments
- Coolant seepage at hose connection points
- Loss of heater circuit flow due to a damaged hose
Installation Notes and Tips
Verify hose routing against the original molded shape before installation. Confirm both 16 mm ends seat fully on the heater inlet connections and inspect clamps, adjoining pipes, and nearby coolant components for wear or corrosion. After installation, check the cooling system for leaks and confirm proper heater operation.
Quality Assurance
Gates manufactures this molded coolant hose as an OEM-style replacement for factory routing requirements. The EPDM construction and molded profile support consistent fitment for the listed Scion iM and Toyota Corolla iM applications.
| Brand | Gates |
|---|---|
| Part Number | 12325 |
| Position | Molded Heater Hose, Heater Inlet |
| Material | Epdm |
| End 1 Inside Diameter | .62 |
| End 1 Inside Diameter | 16 |
| End 2 Inside Diameter | .62 |
| End 2 Inside Diameter | 16 |
| Centerline Length | 16.13 |
| Centerline Length | 410 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Toyota | Corolla iM | 1.8L | L4 | GAS | Heater Inlet | Molded Heater Hose |
| 2017 | Toyota | Corolla iM | 1.8L | L4 | GAS | Heater Inlet | Molded Heater Hose |
| 2016 | Scion | iM | 1.8L | L4 | GAS | Heater Inlet | 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.