A cover for an air filter housing of a motor vehicle has a clear cover with a gasket having a first channel enclosing an outer periphery of the cover. The gasket has a second channel configured to receive an inwardly extending flange on the air filter housing which flange extends around a viewing opening in the housing. The gasket has an end portion connected to the second channel that is inwardly and downwardly inclined to allow the end portion to slip over the flange and form a snap lock with the flange retaining the gasket and cover over the opening in the air filter housing. The end portion has a downwardly inclined edge below the flange, so the cover and gasket can be removed from the housing by pulling on a pull tab extending from the gasket.