A hydraulic housing is the body a filter element seats in: the bowl or canister that contains system pressure and holds the element against its seals. Housings are replaced when they are damaged, corroded or when a system is being reconfigured, and they are pressure-rated components rather than covers.
Selection depends on working pressure, port size and thread, mounting arrangement and which element the housing is designed to take. Search by Donaldson part number, or send us the number cast or stamped on the existing housing.