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Water Filter for the Frigidaire DGUS2645LF1 (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:
✓
DGUS2645LF1 specifics — where the filter actually lives
The filter bay on the DGUS2645LF1 in the fresh-food compartment — exact spot varies by dispenser layout — usually a kneeling-height or shoulder-height swap, not a teardown. Mechanically the DGUS2645LF1 uses a twist-in cartridge: the bay wants the cartridge offered flat, rotated a quarter turn, and nothing more — hand pressure only.
Field notes: a stubborn first twist when the old o-ring has set, and a change-filter light that will not clear itself until you hold the reset. What pins the parts choice down is the media line: the WF3CB media line; that is the anchor every compatible listing hangs from. The F1 ending is a finish code — color and handle options, not mechanical ones. Every finish of this chassis takes the same cartridge.
Reading the DGUS2645LF1 model code — what the digits tell you
Call it a 26 cubic feet box — which is why this cartridge works for a living rather than sitting decorative. Hold this constant while shopping: the water path is fixed at the WF3CB line — that asymmetry is what makes filter shopping simple.
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.
DGUS2645LF1 filter questions
Frigidaire DGUS2645LF1: how do I clear the change-filter light?
The reset is a press-and-hold on the filter control with the cartridge in place; check the DGUS2645LF1 owner’s manual for where that control sits on your panel.
Does the Frigidaire DGUS2645LF1 need a bypass plug when the filter is out?
No — run it empty if you like; the WF3CB bay needs no bypass plug, it simply passes water through untreated.
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 DGUS2645LF1?
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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