The Pentek 154508 is the correct replacement housing cap for the following filter housings:
The Pentek 154508 Filter Bag 1 1/2" Housing Cap is a replacement housing for PBH Bag Filter housings. This vent cap has a 1/4" vent and 1.5" inlet and outlet ports. This cap for bag filter housings is a genuine Pentek part and is made from high quality material in order to be durable and long lasting.
Pentek 154508 Filter Bag 1 1/2" Housing Cap specifications: