Whirlpool Replacement Water Filter Cap for Refrigerators is compatible with Whirlpool brand. Part# WP2260518AP replaces 2260518AP, 2260502AP, PS11739969, B0156ND2KA, B00INZYB5Y, B00X4I9Y2U, B002ZNCATE, B00727CLWY. This Water filter fits onto the end of the water filter to cover the end and hold the filter in place.