Search·Levoit
Use this page to see which air purifier models take this cartridge, check suggested change timing when we have it, and open retailer links when you’re ready to buy.
Brand
Levoit
This filter number is linked to the purifier models below in our reference. If yours is listed, open buying options when you’re ready—always match the number on your current cartridge.
LEVOIT-RF-RAR040
Core 400 / Core 400S replacement filter
Replace about every 6 months
LEVOIT-RF-RAR040 matches models linked on this page. Buying options are shown only when BuckParts has listing evidence checked against this part number.
Why this fits
- 14 compatible models on file for this part number
- Notes available
- Buying options are shown only when the product page matches this filter number. Compare it with your old filter before ordering.
Model lists here reflect what we have on file for this part number—not every unit ever sold.
Where to buy
Shown after BuckParts checks the product page against this filter number (2026-04-21).
Fits these models (14)
Notes & next steps
Search again if you need a different model or part number.
3-in-1 for Core 400 series