New OEM Genuine Nissan original heater hose clamp for Datsun 240Z, 260Z and 280Z, 1970-78. These clamps are used on the coolant hose that goes down the side of the engine to the 3-way connector, #'s 33 & 29 in the diagram. These hose clamps measure 1.11" (approx 1 1/8") I.D. when fully open. Three of these clamps are used per engine.