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Gates HVAC Heater Hose P/N:51749
$51.99
Keep coolant moving to your cab's heater core with the Gates HVAC Heater Hose 51749, a coolant hose for the heater-outlet-to-tee position. It's a direct-fit replacement for the 2015-2022 Chevrolet Colorado and 2015-2022 GMC Canyon on the listed applications.
- Position: Serves the heater-outlet-to-tee run, carrying engine coolant between the cooling system and the heater core circuit.
- Function: Routes coolant so the heater core can supply warm air to the cabin.
- Coolant service part: Replaces a hose that has hardened, cracked, swelled, or begun weeping — common signs a heater hose may need replacing.
A failing heater hose can leak coolant, cause weak or intermittent cabin heat, or leave a sweet coolant smell. If a deteriorated heater-outlet-to-tee hose is the cause, this Gates hose replaces it. Inspect the clamps and coolant condition during installation.
Interchange: 20851S · F10415 · 23479545 · 84002018
Manufacturer part number 51749
This part cross-references / interchanges with the following part numbers:
20851S, F10415, 23479545, 84002018, 51749
Frequently Asked Questions
What vehicles does the Gates 51749 heater hose fit?
It's a direct-fit replacement for the 2015-2022 Chevrolet Colorado and 2015-2022 GMC Canyon. Check the Buyer's Guide tab to confirm it matches your vehicle.
Where does this hose go on the vehicle?
It serves the heater-outlet-to-tee position, routing engine coolant between the cooling system and the heater core circuit.
What does a heater hose do?
It carries engine coolant to and from the heater core so the system can supply warm air to the cabin.
What are signs this heater hose may need replacing?
Coolant leaks, a sweet coolant smell, or weak/intermittent cabin heat can indicate a hardened, cracked, or weeping hose. Diagnose the cause before replacing.
What numbers does this hose interchange with?
It cross-references 20851S, F10415, 23479545, and 84002018. The manufacturer part number is 51749.
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Gates HVAC Heater Hose P/N:51749
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