The hose construction and the weird stuff inside work as a system to
dampen the hydraulic pulses from the pump.  If you just replace the rubber
hose with a high pressure hydraulic hose and keep the insides it will
scream like a banshee (been there, done that).  The hose must have the
proper resilience to adsorb the pressure pulses and the tube inside must
act like the internals of an exhaust muffler.  I have no idea what the
single crimped band half way down the hose does.

I suggest buying a new hose (search 251422893C to find at least one
supplier that claims to have them for $281 (Ouch!)) or buy a replacement
from a trusted list vendor that will back up their claim of acceptable
noise reduction.