Dorman 696-725 Air Intake Hose Flows clean air from the air cleaner box into the throttle body preventing unfiltered air and debris from entering the engine Direct replacement for a proper fit every time Designed to accommodate all necessary PCV and emission fittings Rigorous quality control measures have been undertaken to ensure that this part conforms to product standards Outer diameter: 3 3/16" ; Inner diameter: 2 3/4"