If you have lost your drain plug, here is where you can get a replacement. The ORCA EZ-Flow Drain Plug seals up tight so your cooler doesn't leak, but drains fast when opened. Includes gasket. Sold individually.
Orca Drain Plug
WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov