Balboa are replacements for the older discontinued Ultra Jet pumps. These pumps have the same footprint as the Ultra Jet pumps as Balboa is the supplier
This Balboa pump s a direct replacement for the discontinued Ultra Jet pumps.
Everything lines up 100% and the wiring is identical as well.
Quality appears to be good. I've only recently installed it; time will be the indicator.
Got my new pump in great time and works great!