All items that have been granted an Executive Order number from CARB will have an EO sticker in the kit and must be placed on or near the device. To see if your vehicle has been granted an Executive Order number, look up your vehicle's year, make, and model on the aFepower.com or ARB website. aFe POWER's Executive Orders currently have a range from D-550 to D-550-16. If, for some reason, you are missing the EO sticker or have any other questions, please submit a CARB Inquiry to Tech Support.