Datsun 240Z air filter plug. New rubber plug for the breather on 1970-73 Datsun 240Z. Fits on the backside (engine side) of the air filter housing. Choose from OEM Nissan or aftermarket. The plug does not require a clamp for installation.
Small has 15.5mm (5/8") I.D.
Large has 21.5mm (7/8") I.D.