After reading about the larger Brinkmann charcoal pan used as a water pan in the 18" WSM I decided to order one from Amazon. The part number was the one listed on the Water Pan modifications page of the virtualweberbullet site. On that site, it states that the pan is sometimes sold under the part number 812-0002-0. On the Amazon product page, it does have water pan in the title but states that it is 15" in overall diameter and has this part number listed on the the Water Pan Modifications page so I thought I was good. When I received the pan, it was a little over 13.5" in diameter and I think it is the water pan not the charcoal pan. It did have a sticker on the bottom with the 812-0002-0 part number on it. I did call Brinkmann and confirm that the 812-0002-0 is a correct part number for the charcoal pan that is a little over 15" in diameter.
I ended up ordering the 114-0002-0 part number from the Brinkmann site. More expensive shipping but hopefully I will get the correct pan this time.
I ended up ordering the 114-0002-0 part number from the Brinkmann site. More expensive shipping but hopefully I will get the correct pan this time.