The clamp for the hose is between #4 and #3 intake runner, not difficult to get to. The other heater hose clamp is behind the cylinder head. It makes it easier to loosen if you use a 1/4 inch drive 12" extension and a 7mm socket to loosen the clamps, cut the hoses of the pipes that go through the firewall so that you won't put undue stress on the pipes. A pry bar can be used to remove the hose from the cylinder head nipple, cut a section of hose down the side of the hose behind the cylinder head to make getting it off easier.