I have a Polaris PB4-60 pressure side pump for Polaris 270 model and for other cleaners that use a PRESSURE side pump. My Polaris 270 fell apart and I went forward with another cleaner system.
When I changed out my system the pump worked perfectly and was used under protective cover and not out in the weather. I have some fittings and newer Polaris flex tubing hoses that cost $40.
$75 takes it home.
Am located in LINCOLN CA near Joiner PKWY and west off 5 the street