The present invention relates to an air filter to be inserted to install on-vehicle air cleaner, and more particularly, but in the sliding removable air filter is formed combining the separate removably loaded in case both sides of the air filter, both sides of the case for removably loading itself as the guide support pieces and removable load of lifting additional bond presented by elevating support pieces, each protruding from a for engaging the mounting pull-push or pull the removable rod with front and rear direction through the lifting action of the air filter inside the air cleaner or by configured to be separated,
It made a strong adhesive fixing in the air cleaner inside the compartment loading of the air filter only pushing operation as well as pulling the compartment loaded at the same time secured the release from the air cleaner can be made that the separation of the external equipped and replacement of the air filter is very easy would that can be made, do not wear on the lifting unit of the detachable loading caused by the vibration of the vehicle may maintain a strong close contact fixed within the air cleaner could be filtered air that can be reasonably prevented from flowing into the engine will, because it is very economical mass production can be realized through cost reduction and productivity with superior assembly.