Exact fit. Distributor removed to replace hose underneath at one end.. Wall is thinner than OEM so a smaller 1" dia clamp is required. 5/8" ID, 7/8" OD Reinforced.
I had a leak in the heater hose that runs from under the distributir to the firewall valve. I had to remove the distributor and I cut the old hose off. The Gates heaterhose was perfect fit replacement.