The Pentek 154001 is the correct replacement filter housing cap the following water filtration systems:
The Pentek 154001 3/4" Black Filter Housing Cap is a replacement filter housing cap for standard Pentek housings. This standard housing cap features a black finish and is manufactured with durable reinforced polypropylene that will be long lasting. This Pentek filter housing cap does not include a pressure release button.
Pentek 154001 3/4" Black Filter Housing Cap specifications: