The Pentek 255631-43 is the correct filter replacement for the following:
The Pentek GS-10CB-5-B-1/4" Inline Filter Cartridge helps to eliminate chlorine taste and unpleasant odor in your drinking water. Also known as part number 255631-43, this Pentek Inline Filter is designed to fit any point of use drinking water appliance, including reverse osmosis (RO) systems, distillation systems, coffee makers, espresso brewers, bottleless water coolers, water fountains, refrigerators, food service equipment, ice machine, misters, and along with other water dispensing devices.
Pentek Gold Series Inline Filter Cartridge specifications:
The Pentek GS-10CB-5-B-1/4" Inline Filter includes a pre-filter and post-filter. Constructed with coconut shell carbon, this inline filter is NSF 42 Certified with a pressure rating of 125 psi (8.62 bar).