On my 430 I've got a leak coming out of the hydro cooler lines right where they go in the radiator. The short 5 or 6" flexible hose at the end of the hard line right at the radiator looks to be failing. Looking at a parts diagram jd just calls it a hose. No part #. It looks just like regular fuel line with a hose clamp at each end. Can I just use regular reinforced 1/4" or whatever size it is fuel line to replace it? I haven't taken it apart yet so I don't know size yet. Not sure if this helps, but the hose is #18 on the oil cooler and radiator diagram for an 88 430.