Water Filter for the Frigidaire FGUN2642LF5 (ULTRAWF)

Your Frigidaire refrigerator takes the ULTRAWF slot. Below is every filter that fits — OEM and certified alternatives — with real prices.

✓ 100% compatible — no bypass plug needed

🔧 5-min push-in swap

🇺🇸 Ships from Indiana

FGUN2642LF5 · Quick Facts

TYPE

refrigerator

YEARS MADE

—

FILTER LOCATION

inside the fresh-food cavity, position varying with dispenser spec

FILTER SLOT

PureSource Ultra bay

REPLACE EVERY

Every 6 months

ALSO BRANDED AS

—

FGUN2642LF5 · Quick Facts

Filter locationinside the fresh-food cavity, position varying with dispenser spec

Filter slotPureSource Ultra bay

Replace everyEvery 6 months

Typical installTwist or push — 5 minutes, no tools

Every cartridge that fits this model — pulled live from the catalogue:

✓

Verified fit for FGUN2642LF5. Cross-checked against Frigidaire service documentation — this model family uses the ULTRAWF bay with no chip or bypass restrictions.

Not your model? Check the finder →

FGUN2642LF5 specifics — where the filter actually lives

Finding the bay is the easy part — this chassis puts it inside the fresh-food cavity, position varying with dispenser spec, a spot that survives trim changes across the refrigerator run. Mechanically it is a quarter-turn twist-in seat: 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. Whatever the badge on the door says, the parts reality is this chassis drinks from the ULTRAWF family, one of the most cross-referenced cartridges in the Frigidaire catalog. Finish codes such as F5 change the look, not the plumbing — order the cartridge by model, ignore the finish letter.

Reading the FGUN2642LF5 model code — what the digits tell you

The 26 cu ft in the code is the size class; households that size move enough water that the six-month interval is worth honoring. Shopping shorthand for this model: the FGUN2642LF5 and its siblings all drink from the ULTRAWF line, which keeps the parts search short.

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.

FGUN2642LF5 filter questions

Frigidaire FGUN2642LF5: how do I clear the change-filter light?

Press and hold the reset control until the light clears (a few seconds), with the new cartridge already seated — the FGUN2642LF5 owner’s manual lists the button location for your control panel.

FGUN2642LF5 with no water filter installed — safe, or does it need a bypass?

No — run it empty if you like; the ULTRAWF 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 ULTRAWF 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 FGUN2642LF5?

Every six months or at the rated gallon capacity, whichever comes first — the ULTRAWF 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

OEM ULTRAWF cartridge

This bay takes the OEM ULTRAWF. ClearFit verified-fit alternatives for this exact slot are being staged — every compatible option for your fridge is one lookup away.

Check every filter that fits →