Look on your drivers side valve cover area. Below your Degas bottle. I believe the sticker is on the FCM. You'll see a yellow or white sticker from International. It will list the assembly plant, and date built. Look for a number that will start with either EN100, Or EN200. After that will be your build date. Listed as day/month/year. For an example, mine says, EN100 06/12/04. Meaning it was built December 6th, 2004.