Model compatibility ledger

Xiaomi Smart Air Purifier 4 replacement filter

Use this model page to match the purifier body label to the OEM filter SKU, compatible alternatives, sizing notes, and retailer listings before ordering.

OEM filter SKU

M16R-FLP

Replacement interval

Every 8 months

Annual filter estimate

$50-$120

OEM filter first

Xiaomi Smart Air Purifier 4 Filter

Newer Xiaomi smart purifier family.

Model numbers: Smart Air Purifier 4, Air Purifier 4
Aliases: Xiaomi 4 filter, Mi Smart Air Purifier 4
Dimensions: Cylindrical cartridge for Smart Air Purifier 4.

Last reviewed 2026-05-29. Match both purifier model and filter SKU because retailers often group similar cartridges together.

OEM and compatible filter comparison

OEM entries are shown first. Compatible alternatives are not manufacturer-approved unless marked OEM.

Check	OEM filter	Compatible option
Manufacturer-recommended filter	M16R-FLP · Xiaomi Smart Air Purifier 4 Filter	M16R-FLP · Xiaomi Smart Air Purifier 4 Filter Cylindrical cartridge for Smart Air Purifier 4. Annual estimate: $50-$120.

Retailer options for M16R-FLP

Amazon

Xiaomi Smart Air Purifier 4 filter

Varies by listing

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Availability note: Use the SKU and model notes here to confirm fit before checkout.
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Check retailer listing

Verify the purifier model and filter SKU on the retailer page before ordering.

Xiaomi

Smart Air Purifier 4 filter