I'm about 90% sure my 603 has crimped fittings. Any tractor/bobcat repair shop and a lot of chain auto parts stores will make you a matching hose if you take the old one in to match length and fittings.

CarQuest in particular usually has a sign out front (Not all of them, but most in our part of the country) that reads "We make hydraulic hoses" or something like that.

I think in a high pressure environment I'd trust a crimped fitting. They probably had trouble with w123s blowing them off under pressure periodically and went to a sturdier fitting. That being said, I've never seen the screw-type ones you're talking about so I can't say anything one way or another.

Either way, if it was mine I'd just haul the old hose to Carquest and have them crimp you a new one.

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~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL