Abstract: 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.

Abstract: An adapter for a pipe is disclosed where the adapter changes the effective inside diameter of the tube to increase the airspeed flowing through the area where the adapter is placed. The adapter is utilized in automobiles where to adjust engine parameters based upon the requirements from the various sensors. This allows original sensors to be used in pipe while providing the overall appearance of a larger section of pipe. A kit including a number of nesting adapters is provided to allow altering of the cross sectional area of the pipe. The location of the sensor is maintained in the center of the pipe and the adapter(s) engage, nest, or connect to cause a progressive reduction of the pipe diameter until the optimal air flow speed is achieved based upon the requirements of the sensor.

Abstract: An adapter for a pipe is disclosed where the adapter changes the effective inside diameter of the tube to increase the airspeed flowing through the area where the adapter is placed. The adapter is utilized in automobiles where to adjust engine parameters based upon the requirements from the various sensors. This allows original sensors to be used in pipe while providing the overall appearance of a larger section of pipe. A kit including a number of nesting adapters is provided to allow altering of the cross sectional area of the pipe. The location of the sensor is maintained in the center of the pipe and the adapter(s) engage, nest, or connect to cause a progressive reduction of the pipe diameter until the optimal air flow speed is achieved based upon the requirements of the sensor.