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Gates 12453 HVAC Heater Hose - Inverter (Inlet) or Pipe To Pipe
Gates Molded Heater Hose 12453 Overview
The Gates 12453 molded heater hose is a factory-molded, OEM-style coolant hose built for tight engine bays where a straight hose will not route correctly. Made from EPDM, it is suited for coolant, water, and air transfer and is also approved for marine applications.
Use this molded heater hose when you need a precise replacement for select Toyota Highlander and Lexus RX450h cooling-system routing. The Gates Molded Heater Hose line is focused on OE-style fitment for compact engine compartments and consistent hose shaping.
- EPDM construction for coolant, water, and air service
- Factory-molded shape for tighter engine compartment routing
- Small I.D. hose with 0.62 in. / 16 mm inside diameter at both ends
- Centerline length: 13.56 in. / 344 mm
- Approved for marine applications
- Gates 12453 replacement hose for OE-style fitment
Fitment and Application Details
Compatible with 2017-2019 Toyota Highlander, pipe to pipe, and 2020-2022 Lexus RX450h and 2020-2022 Lexus RX450hL, inverter (inlet). If you are searching for a Gates 12453 heater hose for a Toyota Highlander cooling system repair or a molded heater hose for Lexus RX450h inverter inlet routing, this part matches those applications.
This part cross-references Bosch 13453 for the same application.
What This Hose Helps Address
- Cracked or leaking molded heater hose sections
- Improper hose routing in compact engine compartments
- Coolant transfer issues at the inverter inlet or pipe-to-pipe connection
- Replacement needs for aged EPDM hose material
- Service repairs requiring an OE-style molded hose shape
Installation Notes and Quality
Verify end diameters, centerline length, and routing before installation to confirm the hose follows the original path without kinks or tension. Check adjacent clamps, pipes, and sealing surfaces during service so the replacement hose seats correctly in the cooling circuit.
Gates manufactures this molded heater hose as an OE-style replacement part for applications that require accurate shape and material selection. Part number 12453 is built to support the listed vehicle fitments and cooling-system routing requirements.
| Brand | Gates |
|---|---|
| Part Number | 12453 |
| Position | Molded Heater Hose, Inverter (Inlet) and Pipe To Pipe |
| Material | Epdm |
| End 1 Inside Diameter | .62 |
| End 1 Inside Diameter | 16 |
| End 2 Inside Diameter | .62 |
| End 2 Inside Diameter | 16 |
| Centerline Length | 13.56 |
| Centerline Length | 344 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2022 | Lexus | RX450h | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Inverter (Inlet) | Molded Heater Hose |
| 2022 | Lexus | RX450hL | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Inverter (Inlet) | Molded Heater Hose |
| 2021 | Lexus | RX450h | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Inverter (Inlet) | Molded Heater Hose |
| 2021 | Lexus | RX450hL | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Inverter (Inlet) | Molded Heater Hose |
| 2020 | Lexus | RX450h | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Inverter (Inlet) | Molded Heater Hose |
| 2020 | Lexus | RX450hL | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Inverter (Inlet) | Molded Heater Hose |
| 2019 | Toyota | Highlander | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Pipe To Pipe | Molded Heater Hose |
| 2018 | Toyota | Highlander | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Pipe To Pipe | Molded Heater Hose |
| 2017 | Toyota | Highlander | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | Pipe To Pipe | 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.