Could someone give me the Lincoln part number for the plastic coolant reservoir? I believe mine may be cracked. I have a small coolant leak just behind the drivers front wheels. "2000 ls 3.9" Thanks

Sorry I don't have the number but I had the same problem. I just bought the car and the guy who sold it to me had "fixed" the reservoir or degas bottle as I found it is also called. He bought it from the dealer for 120 bucks only to find out it was the hose that connects to it that was broken. Luckily, the bottle comes with the hoses. I'm happy I got both parts new now.
Your's might still be the bottle but while you're in there take a good look at the hose.

Thanks for the info. I have the parts on order.