2005 - 2006 - 2007 Nissan Xterra & Frontier AM FM 6 Disc CD Player Radio -- Rockford Fosgate Sound System -- Part Number: 28185EA400. Ref. Number: CQ-EN8461X. ATTENTION! Your vehicle must have originally been equipped with the Rockford Fosgate version of this radio in order to use this. This radio will only work with the Rockford Fosgate system. If you are unsure of fit please compare your plugs or contact a Nissan dealer with your VIN and our part number. This is for a Nissan Xterra & Frontier 2005-2007 factory OEM AM FM 6 disc CD player radio that has been professionally remanufactured. This radio has been cleaned, serviced as needed and thoroughly checked. Part number is 28185EA400 so please make sure this is the correct radio for your vehicle. If your part number does not match exactly, it will likely not work. No codes required, it will plug and play! This radio is being sold as a REPLACEMENT ONLY! If you do not have this exact part number currently in your vehicle, it will likely NOT WORK. If you are unsure of your part number, give a Nissan dealer a call with your VIN and they should be able to provide you with the correct part number. They may look the same and have the same plugs but data streams may be different, not allowing them to code. For example, external amps are used in some cars and will not allow interchange, etc. Please note that this is for the Rockford Fosgate sound system and if you DO NOT have the Rockford Fosgate, it will not work.