The Pentek 158784 is the correct replacement cap for the following water filter systems:
The Pentek 158784 10" Slim Line Filter 1/4" Cap is a 1/4" replacement cap for Pentek 10" Slim Line water filter housings. This white cap is sold in a case of 12 and is for clear filter housings. Known as part number 158784, this cap is a genuine Pentek part made from quality construction material in order to be rigid and durable.
Pentek 158784 10" Slim Line Filter 1/4" Cap specifications: