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3M Aqua-Pure Reverse Osmosis Systems
This page carries replacement filters for 3M 3MRO401 and 3MRO501 under-sink reverse osmosis systems, including the 3MROP411 and 3MROP416 cartridges, the 3MROM413 membrane and the AP5527 filter set. 3M recommends replacing the cartridges every 12 months and the membrane every 36 months.
Common questions
Which filters does a 3M RO system use?
A 3M 3MRO401 or 3MRO501 RO system uses the 3MROP411, 3MROP412 and 3MROP416 cartridges plus the 3MROM413 membrane. Match the part numbers on your current filters before ordering.
How often should you change 3M RO cartridges and the membrane?
3M RO cartridges should be changed every 12 months, and the 3MROM413 membrane every 36 months, according to 3M. For other 3M under-sink cartridges, see our 3M Aqua-Pure under sink filters, or browse all RO replacement filters.
