Dell-Cares Update: The bracket can be purchased from our sales team. Here is the the link for contacting our sales team. 
I recently purchased a Precision Tower 5820, with warranty but used. It is missing the 5.25 ODD Bracket which supports a 5.25 drive slot (The large Metal Bracket which sits over the Hot Swap bays, in front of the Power supply, and over the two medium size fans) I am unable to find a part number for this online. Does anyone have the part number for this part of the chassis? It is labeled in the Owners Manual on Page 9, Internal View of Chassis, Item #3: "ODD 5.25" Bracket" Does anyone know where this part can be purchased?   Thank you for your assistance!
Precision Tower T5820 Part Number/Purchase