Transponder Key Blank Fits 1999 2000 2001 2002 2003 Infiniti QX4 This is about one uncut transponder key blank with a black plastic head, and the chip included inside the key, tested and ready to be programmed. You can take this new key with your actual working key to a professional locksmith or the dealership to cut, program and duplicate it. It Fits 1999 2000 2001 2002 2003 Infiniti QX4