The Pentek 158753 is sold in a case of 12 and is the correct replacement housing cap for the following:
The Pentek 158753 3/4" Standard Filter Housing Cap is a replacement filter housing cap for Pentek 10" Standard Flat Cap Housings. This 3/4" standard filter cap, also known by part number 158753, includes a pressure relief button and is a genuine Pentek part. In addition, this Pentek housing cap is made from durable and sturdy construction material in order to be longer lasting.
Pentek 158753 3/4" Standard Filter Housing Cap specifications: