Hose for Hotsy washer

[Ashgrove]

Have a Hotsy 500 series hot water washer (120 volt). Will be needing a new hose soon.
Would like something more flexible, current hose is probably not the original and is quite stiff. Northern has the Goodyear Whitewater hose.
Any other options out there?
Thanks for any insight.

 

[Bert_]

3/8 hydraulic hose.

* Could probably go 1/4". I'm guessing flow rate is fairly low if it's only 120v. I've used 3/8 on the bigger ones.