Keep hot coolant moving to your heater core with the Gates HVAC Heater Hose 19368, a direct-fit replacement for the 2004-2006 Lexus RX330 and 2004-2007 Toyota Highlander. It works as the lower heater hose, carrying engine coolant between the cooling system and the heater core that warms and defrosts your cabin.
- Position: Heater (lower) hose.
- Function: Routes engine coolant to and from the heater core for cabin heat and defrost.
- Fitment: Direct-fit replacement for the listed Lexus and Toyota applications.
Over time a heater hose can crack, swell, or leak, so installing a fresh hose helps restore a sealed coolant path. Signs the hose may need replacing include visible coolant leaks or drips, a low-coolant condition, a sweet coolant odor, or reduced cabin heat. If a deteriorated or leaking lower heater hose is the cause, this replaces it; diagnose the source of any coolant loss before ordering.
Interchange: 16375M · 11368 · 8724548201
Manufacturer part number 19368
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the Gates 19368 heater hose do?
It's the lower heater hose that routes engine coolant between the cooling system and the heater core, which supplies heat to the cabin and defroster.
What vehicles does this hose fit?
It's a direct-fit replacement for the 2004-2006 Lexus RX330 and 2004-2007 Toyota Highlander. Check the Buyer's Guide tab to confirm your vehicle.
Is this the upper or lower heater hose?
This is the heater (lower) hose position.
What are signs my heater hose needs replacing?
Coolant leaks or drips, low coolant, a sweet coolant smell, or reduced cabin heat can indicate a cracked, swollen, or leaking hose. Diagnose the source before replacing.
What numbers does this hose interchange with?
It cross-references 16375M, 11368, and 8724548201. Its own manufacturer part number is 19368.
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