Frigidaire ULTRAWF Refrigerator Water Filter
The short answer on the ULTRAWF
The ULTRAWF is the puresource ultra cartridge for frigidaire refrigerators — it installs with no chip handshake. It carries 42+53+401. ULTRAWF replaces: Distinct slot — not a WF2CB substitute.
Verified fit: 784 refrigerator models with on-site fit pages. Install time: 5 minutes, no tools. This page is part-number specific — for the model-page view (where the filter lives on your exact fridge), follow any link in the compatible-models table below. Push-in at the top of the fresh-food compartment; never force a round slot with a square cartridge.
ULTRAWF vs WFCB vs WF2CB vs EPTWFU01 — which cartridge does your fridge take?
| Part | Interface era | RFID chip | NSF claims | Replacement path |
|---|---|---|---|---|
| WFCB | PureSource | No chip | Not stated in our evidence file | Older round cartridge |
| WF2CB | PureSource 2 | No chip | Not stated in our evidence file | Supersedes WFCB |
| ULTRAWF | PureSource Ultra | No chip | 42+53+401 | Distinct slot — not a WF2CB substitute |
| EPTWFU01 | PureSource Ultra II | No chip | Not stated in our evidence file | Newer Ultra bay |
Certification lines above are traced to our verified evidence file (part-number × version facts); third-party compatibles usually carry less.
What an ULTRAWF should cost
We do not print an OEM list price for the ULTRAWF — our price file has no captured listing for it, and a guessed anchor is worse than none. Check the manufacturer's own parts store for the genuine price; third-party compatibles cluster at $8–15 per cartridge (mostly NSF/ANSI 42 only) with a premium 42+53 tier above them.
Refrigerators that take the ULTRAWF
| Verified models (784 with fit pages - sample below) |
|---|
| XGHS2645KF2 |
| XGHS2645KF1 |
| LPHS2687KF4 |
| LPUS2686LF1 |
| LPUS2686LF0 |
| LPHS2687KF1 |
| LPHS2687KF2 |
| LGUS2646LF0 |
| LPHS2687KF0 |
| LGUS2646LP0 |
| LGUS2646LE0 |
| LGUB2642LP8 |
| LGUB2642LP9 |
| LGUB2642LF8 |
| LGUB2642LP5 |
| LGUB2642LP4 |
Model number on your fridge is on the plate inside the fresh-food compartment. Full list via the brand hub: Frigidaire filter hub.
Swap it in 5 minutes
- Pull the old cartridge straight out of the header — expect a small spill, not a flood.
- Align the new cartridge with the keyed slot; it only goes in one orientation.
- Push the cartridge home until the retention latch clicks.
- Run 1–2 gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.
What the ULTRAWF is actually certified to remove
NSF/ANSI 42 + 53 + 401. The honest framing: the two tiers that matter in compatibles are 42-only (taste, chlorine, sediment) and 42+53 (adds tested lead and cyst reduction). Claims are part-number × version facts — NSF listings update with annual re-tests, so re-check the certified-product database before relying on a claim. PFOA/PFOS reduction claims live under NSF/ANSI 53 (P473 protocol), not under 401 — a listing that says otherwise is wrong.
What does the ULTRAWF replace?
Replacement path: PureSource Ultra bay — not a WF2CB substitute. Within a family, buying the newer part number is always the safe choice — older cartridges often physically fit newer bays but cause no-water or error conditions.
Does the ULTRAWF water filter have an RFID chip?
None. Only GE's RPWFE line carries an authentication chip; no other mainstream refrigerator cartridge on this site verifies electronically.
How hard is it to install a ULTRAWF?
A 5 minutes, no-tools job: twist or push the old cartridge out, seat the new one, flush 1–2 gallons to clear carbon fines, then hold the filter reset until the light clears.
Which certification should I look for in a compatible ULTRAWF?
NSF/ANSI 42 + 53 + 401. Third-party compatibles split into two tiers: NSF/ANSI 42 only (taste, chlorine, sediment) and 42 + 53 (adds tested lead and cyst reduction). If a listing does not name the standard, assume 42 only.
Related part numbers & guides
- WF2CB — Supersedes WFCB
- EPTWFU01 — Newer Ultra bay
- Frigidaire filter hub — every system the brand uses
- How to replace a Frigidaire refrigerator water filter
- NSF 42 vs NSF 53 — what each certification actually tests
- OEM vs aftermarket water filters — the honest comparison
Not sure this is your cartridge?
The model number on the plate inside your fridge (fresh-food compartment, left wall or ceiling) is the ground truth. Match it in the finder and buy with confidence.
Not sure it is your cartridge? Use the fridge filter finder · All refrigerator water filters
OEM vs certified aftermarket filters → (what the difference really is, and when the cheaper one is fine)