Drain plug for the Balboa Ultrajet Ultima and Ultima Plus wet end. O-ing is not included it's sold separately.
The old generation of Ultima pumps were made by Ultrajet up to about 2011. Balboa Water Group is now the manufacturer of these pumps and the replacement parts, most of these pump parts now made by Balboa are backwards compatible and should fit the older standard Ultrajet generation of the Ultima series pumps
Manufacturer warrants product to be free of defects upon delivery.