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"I see that the two smaller hoses at the thermostat are NLA. Mine were in good shape, but I thought it would be prudent to replace them while the carbs were off. Straight lengths of 5/8" or 3/4" heater hose weren't looking right, and I suspected that straight pieces of 18mm heater hose wouldn't look much better. After searching a while I found a single Gates hose with the correct 18mm I.D. and two bends that are very close to the originals."
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So, by cutting out two of the bends in Gates #19746 he's created a perfect solution for these hard-to-reach hoses. Nice.
According to the parts fiche, these same hoses are used from 1990-1997.
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Now, if Derek could come up with generic replacements for the two large radiator hoses....