K&N Intake Kits - Are they street legal?
This intake system is not legal for street use in the following US states:
Arizona, California, Connecticut, District of Columbia, Maine, Maryland, Massachusetts, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington
This intake system is legal for street use in most states. However, it is not legal for sale or street use in California and the above states that have adopted California Emissions Standards under Section 177 of the Federal Clean Air Act of 1970. Intake systems are subject to governmental regulation in California and certain other states adopting the emission standards of the California Air Resources Board. In order for an intake system to be legal on a specific vehicle in California and the other adopting states, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.
All K&N 57 series intakes for North American vehicles have received CARB EO numbers and are street legal in all 50 states.
Some intake systems we sell beginning with the prefixes 63-, 69-, 77, & RK- are not legal for use in California and other states adopting CARB emission standards.