Got it. Those are heater hoses. There are various options but most parts stores will pull up a part number for a molded line.
Here is a link to a parts site that has many options:
Basically most all of them are cut to fit so they are in the general form but are long so that you can cut them off on your set up.
You can also just use bulk hose if you want to. There are normally not many serious bends that require a molded line.
Below is the process from the manual on how to replace them.
Please let us know if you need other info. Thanks
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Friday, September 10th, 2021 AT 3:22 PM