Pentair Elbow and Bulkhead Assembly | System 3 Modular Media Filter | 25021-0100Z Pool Brushes For filter housings designed with

For filter housings designed with a 1

OEM Replacement O-Ring for the Pentair C Series® C-70 Pump

4″ diameter two-stage motor producing 140 cfm on open flow and a sealed pressure of 180 inches of water column

or leaking face ring assembly should be replaced promptly to prevent water ingress into the light niche

Match the part number stamped on your existing impeller before ordering — impeller selection is HP- and model-specific

Pentair Elbow and Bulkhead Assembly | System 3 Modular Media Filter | 25021-0100Z Pool Brushes For filter housings designed withThe Pentair Elbow and Bulkhead Assembly (25021 0100Z) is the OEM replacement assembly for the Sta Rite System 3 Modular Media Filter series, restoring the internal flow path between filter modules. This assembly forms the sealed connection point between the filter's internal elbow and the tank bulkhead, directing filtered water flow through the modular media sections. When this assembly develops a leak or crack, water can bypass the filter media or