Got the hose installed. It was not easy. I had to drain both halves of the reservoir so I could remove it to get access to long nipple where the hose attaches. The old hose seemed tight, no rub through or obvious hole. The ID size is 3/8 inch. The one O'Reily's sold me is not as thick walled and tends to kink easily if not routed exactly like the original. We will see in a few days if this was worth the trouble.