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Water Filter for the Frigidaire DGUS2645LF3 (WF3CB)
✓ 100% compatible — no bypass plug needed
🔧 5-min push-in swap
🇺🇸 Ships from Indiana
Every cartridge that fits this model — pulled live from the catalogue:
✓
DGUS2645LF3 specifics — where the filter actually lives
The filter bay on the DGUS2645LF3 in the fresh-food compartment, placement dependent on the dispenser package, so expect to clear one shelf edge before you have working room. The seat is a twist-in design — the cartridge drops into the keyed seat and locks with a short quarter turn.
Order-day practicalities: flush before the first glass — new carbon beds shed fines for the first gallon or so, which is cosmetic, not contamination. The constant across every trim of this machine is the cartridge line — the WF3CB cartridge family is what every fit listing for this chassis resolves to, OEM and certified alternative alike. Trailing letters like F3 denote trim and finish: stainless, panel-ready, handle variants. The water path is identical across them.
Reading the DGUS2645LF3 model code — what the digits tell you
Read the code as 26 cubic feet of capacity, which tells you the cartridge’s real workload between changes. Filter logic on this chassis: whatever the door count, the cartridge answer for this chassis is the WF3CB family.
Swap it in 5 minutes
- Twist the old cartridge a quarter turn counterclockwise and pull it straight down — keep a towel in reach for the dribble.
- Fill the new cartridge with cold tap water so the chamber is not fighting an air pocket.
- Offer the new cartridge to the bay, push up, and twist a quarter turn clockwise until the stop catches.
- Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.
What this filter takes out of your water
| What it targets | Standard that covers it |
|---|---|
| Chlorine taste & odor | NSF/ANSI 42 — aesthetic effects |
| Particulates, Class I | NSF/ANSI 42 — fine sediment |
| Lead | NSF/ANSI 53 — health effects |
| Cysts (cryptosporidium, giardia) | NSF/ANSI 53 — microbial |
| PFOA & PFOS | NSF/ANSI 53 (P473) — varies by cartridge |
Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.
DGUS2645LF3 filter questions
How do I reset the filter light on the Frigidaire DGUS2645LF3?
With the new cartridge seated, press and hold the filter reset until the light clears — panel placement differs, so the DGUS2645LF3 manual’s filter section has the exact control for your trim.
Running the DGUS2645LF3 with an empty filter bay — does it need a cap?
No — the WF3CB bay seals on the cartridge itself, so removing it just means unfiltered water until the next change, not a leak.
Are off-brand filters safe for a Frigidaire refrigerator?
Certified aftermarket cartridges are built to the same NSF test standards as the OEM part, and federal warranty law (Magnuson-Moss) protects your coverage when you use them.
Why is the OEM WF3CB cartridge so much more expensive?
Part of the OEM price is the badge and the distribution chain. Certified alternatives meet the same test standards at a lower unit price, especially in multi-packs.
How often should I replace the filter in my DGUS2645LF3?
Every six months or at the rated gallon capacity, whichever comes first — the WF3CB class cartridges all share that service interval.
Do I need to turn off the water supply to change it?
No — the bay is designed for a live swap. Expect a small dribble, keep a towel in reach, and flush a couple of gallons through the new cartridge before the first glass.
Every filter that fits your fridge
| Cartridge | OEM WF3CB | RECOMMENDEDWF3CB Replacement Water Filter · 1-Pack – ClearFit | WF3CB Replacement Water Filter · 3-Pack – ClearFit | WF3CB Replacement Water Filter · 6-Pack – ClearFit |
|---|---|---|---|---|
| Price | OEM list | $10.49 | $26.22 | $47.16 |
| Verified fit | ✓ the bay cartridge | View & buy → | View & buy → | View & buy → |
This filter expires six months from today
Your HVAC filter is probably on a different cycle. Track them all in one place.
months until this filter should be replaced (200-gal rated life)
Free tool · tracks fridge + HVAC + whole-house · auto-refill optional
More models using this filter
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