Where can I locate a replacement heater core hose?

[ModestMussorgsky]

I have a heater core hose on my 2007 classic being held on by clamps (as opposed to the quick connect fitting next to it).  It’s leaking and I’m assuming it’s the hose.  I went to my local auto parts store and they couldn’t locate the hose.  I can’t find it on gmpartsdirect either.  Anyone know where I can find it?

[dna9656]

Auto parts store? www.rockauto.com, Amazon, any GM dealer, on or off line.

[txab]

If it's this one thats leaking:

 

Gates 22554. There is another number that comes up. 51747 looks the same don't know what difference is. 22554 is what I've used on an '04 and an '09

 

Thermostat to Heater

 

 

 

Heater to thermostat: 18914 Gates formed hose

 

Gates also recommends 28411 bulk 5/8" hose. They show 33" required. Double check that

 

They originally used a formed has that had 90* bend in it. But regular hose bent to a generous radius will work.

 

Or dayco   80405 formed hose

 

Continental 64133

 

Edited August 18, 2024 by txab

[ModestMussorgsky]

Thermostat to heater.  Thats the one.  Thank you.  I tried looking up a parts diagram on gmpartsdirect but couldn't find it in the diagram.  is there anything better out there than that site?

[txab]

For belts and hoses, I go to Gates catalog site or Rockauto.com  My go to for parts lookup is Rockauto

[ModestMussorgsky]

Nice thank you.  You think I need the OEM connectors for the heater hose, or can I get away with basic hose clamps?

[txab]

I've stuck with the OEM type connectors, but that's just me. You can hose clamp them directly to heater core pipes, many do. Dorman makes an aluminum connector that replaces the plastic type

[ModestMussorgsky]

Great info.  Thank you for the responses!