If your Frigidaire fridge uses a WF3CB filter, the replacement you need is the genuine WF3CB cartridge — the PureSource 3 filter. This guide covers how to confirm the match, what it costs genuine, how to swap it, how to reset the light, and what to do when something goes wrong — everything in one place.
Confirm WF3CB is really your filter
Do not order by fridge brand alone. Frigidaire has used several filter types over the years, so confirm one of these:
- The part number printed on your old cartridge — look for WF3CB.
- Your fridge’s manual or the filter housing label inside the fridge.
- The model number on the rating plate inside the fresh-food compartment, matched against the filter guide for that model.
If your cartridge says a different number, stop and match that number instead. In particular, do not confuse WF3CB with WF2CB — they are different filters, and a filter that looks right but is not your part number will not seal properly.
What a genuine WF3CB costs — an honest comparison
The genuine Frigidaire WF3CB here starts at $35.99, with multi-packs bringing the per-filter price down (packs to $130.99 — see the product page for the current pack prices). Shipping is free US here, while the rival’s free shipping starts only over $75, so a single filter from them costs you shipping on top. A compatible WF3CB at a lower sticker price is not the same thing: it is a copy, not the genuine Frigidaire cartridge, and fit and seal are where copies fail.
Need the filter itself? Shop the genuine Frigidaire WF3CB from $35.99 — genuine, free US shipping, 30-day free returns.
How to swap a WF3CB filter
- Open the filter housing (usually inside the fridge, upper right, or in the base grille depending on model).
- Release the old cartridge as your housing directs — twist or push-release — and pull it out.
- Push the new WF3CB in until it locks — a cartridge a quarter-turn short is the most common cause of slow flow after a change.
- Flush several gallons through the dispenser to clear carbon fines, then reset the filter indicator as below.
If flow is slow or the water looks cloudy after the swap, check seating first before assuming the cartridge is faulty — it almost never is.
How to reset the Frigidaire filter light
Fitting a new filter does not clear the light on its own — the indicator is a reminder clock, not a sensor. Fit and flush first, then reset through your model’s filter-reset control. The full walkthrough is in our Frigidaire filter light reset guide.
If something is wrong after the change
- Slow flow: the cartridge is usually not fully seated and locked. Push until it locks, then flush again.
- Cloudy water: flush several gallons. Carbon fines clear with flushing and are not a fault.
- Light still on: the reset step above was missed or did not take. Re-seat the cartridge, then reset again.
- Leak at the housing: remove the cartridge, check the seal area, and refit until it locks. A poor seal also bypasses filtration, so do not ignore it.
For Frigidaire’s other filter families, see our Frigidaire PurePour PWF-1 complete guide and the FPPWFU01 vs ULTRAWF comparison — and if your cartridge says FPPWFU01 rather than WF3CB, the PWF-1 replacement walkthrough is the right page.
FAQ
Is WF3CB the same as WF2CB?
No. They are different Frigidaire part numbers. Order the exact number printed on your old cartridge.
How often should I replace a WF3CB filter?
About every 6 months, or sooner if flow slows, taste changes, or the indicator light comes on.
Do I need tools to replace it?
No. Release the old cartridge, push the new one until it locks, flush, and reset the indicator.
My new filter is in but the water is slow. What is wrong?
First re-check that the cartridge is fully seated and locked, then flush again. A quarter-turn short is the most common cause of slow flow after a change.
Is the genuine Frigidaire filter worth it over a compatible?
The genuine cartridge guarantees the exact fit and seal for your model. A compatible that does not seal properly can leak, bypass filtration, or restrict flow — and at $35.99 genuine here, the gap to a copy is small.