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Levoit air purifier

Levoit Core 400S replacement filter

BuckParts checks retailer listings against your exact part. BuckParts is not the seller.

The filter for your Core 400S

Core 400 / Core 400S replacement filter

LEVOIT-RF-RAR040

Look for this code on the filter packaging.

Exact match - Original partReplace about every 6 months

This is the genuine Levoit filter made for the Core 400S family.

See where to buy

Open the official Levoit replacement-filter page BuckParts checked for this model.

No BuckParts Verified Link yet for this filter number. We haven’t found a retailer product page we’re comfortable showing.

Opens the checked Levoit product page.

Is this your model?

If your label says Core 400 or Core 400S, you're in the right place.

If it says Core 200, Core 300, or Core 600, use search instead.

I have a different model

This filter also fits

These Levoit models use the same replacement filter.

Why you can trust this match

  • This page is for LEVOIT-RF-RAR040, the replacement-filter number shown above.
  • BuckParts is not the seller.
  • Buy links are checked against Levoit's official product listing.
  • A buy link appears only when the retailer page passes the filter check.