how many catalytic converters in a 2006 Ford Freestar 4.2L?

Hi this is Dusty, I'm one of the auto experts on RepairPal's Car Genius team. According to my research the Freestar can come with 1 or 2 catalytic converters, the reason for the difference is unclear though. A firsthand diagnosis by a reputable, qualified shop can clear this up, and they would also have knowledge of the state's replacement parts guidelines. If you're visiting somewhere out of state let the shop know that you require CARB approved parts to be installed. If you have any other questions feel free to give us a call at 877-913-1554! We'll be happy to help or find you a certified shop in your area!