The Pentek 154622 is the correct replacement for the following:
The Pentek 154622 Black IB Filter Housing Cap is constructed from durable Polypropylene. Also known as part number 154622, this Pentek Filter Cap features an integrated bracket so that an extra bracket is not needed for wall mounting. The ergonomic pressure release button is designed for easier filter changes. The bottom cap threads are 4.41" (OD) x 3.51" (ID).
Pentek Black Filter Housing Cap specifications:
This replacement integrated bracket cap features a pressure relief button that fits all Pentek 3G Standard Sumps, Pentek #10 filter housing (blue, clear) and Pentek #20 filter housings (blue, clear). The Pentek filter cap needs the following Pentek 143550 Differential Pressure Gauge or the Pentek 143549 Differential Pressure Gauge to operate. The gauges will indicate when your filter is dirty and needs to be changed.