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Are you leaking coolant?
The skin texture of that hose makes me think immediately it is OEM.Aside from the seeping threads, no coolant leaks. Just noticed it when prepping for an oil change.
This. Also, if that factory clamp is original replace with a new one. They will lose clamping force over time causing a leak like the one you have. While you’re at it replace that POS non OEM clamp on the lower side as well And make sure the hose is flush with the metal housing.I had this same issue. I thought coolant was coming out of the threads in the hose when in fact it was just a bad connection. The radiator nipple was caked in hard coolant residue. I suspect the tiny bit of coolant that escapes is absorbed by those fibers on the end of the hose.
I cleaned it up and the leak hasnt returned.