Search·3M
When you know your system or housing model number, this page lists the replacement cartridges we match to it—compare length, diameter, and micron rating before you order.
Brand
3M
Model AP903
3M Aqua-Pure AP903 whole house water filter system
Series: Aqua-Pure
These cartridge numbers are matched to this system model in our reference. Compare length, diameter, and micron rating with the filter you’re removing or your housing specs before ordering.
Your replacement
AP917HD
3M Aqua-Pure replacement cartridge for AP903 whole house system
Replace about every 12 months
AP917HD may fit model AP903, but compare the part number carefully before you buy.
Why this part
- 1 mapped replacement cartridge option for this whole-home system model in our reference
- Notes available for this part
- No BuckParts Verified Link yet for this filter number. We haven’t found a retailer product page we’re comfortable showing.
Replacement cartridge fit for this system model is based on our reference data.
Do not buy yet until you verify your system or housing model number and the cartridge number against the part you are removing, your housing specs, or your owner’s manual.
BuckParts Verified Links
A place to buy that BuckParts has checked against the part, listing, and evidence we trust. Not every filter page has one—we only show a link when our checks clear for this part number.
BuckParts does not have enough proof to show a buy button for this replacement cartridge yet. Verify the cartridge number and dimensions against the cartridge you are removing or your housing specs first.
All details for this part (notes, compatible models, BuckParts Verified Links when listed)
Notes & next steps
Search again if you need a different model or part number.
Single-cartridge AP903 system; OEM replacement cartridge AP917HD (particulate + chlorine taste & odor). Confirm sticker on your head.