UKF8001 Owners: Your Maytag Filter Is the EveryDrop Filter 4 (EDR4RXD1)

If your fridge manual, your old cartridge, or the note on your fridge door says UKF8001, and the box that arrived says EveryDrop Filter 4 (EDR4RXD1) — nothing went wrong. You have the right filter. The name changed; the filter did not. This guide explains what happened, how to prove the match in ten seconds, and what to write down so you never have to wonder again.

Why your filter has two names

UKF8001 was the part number Maytag and Whirlpool sold this cartridge under for years. When Whirlpool consolidated its refrigerator filters under the EveryDrop brand, each old part number got a simple new identity: a colour, a number, and a model code. The UKF8001 became Filter 4 — EDR4RXD1.

That is the whole story. It is not a different filter, a cheaper version, or a compatible copy. It is the same genuine cartridge line, rebranded — which is why the housing, the quarter-turn fitting and the six-month life are exactly what UKF8001 owners are used to.

The ten-second proof

Do not take a product listing’s word for it — check the cartridge itself:

1. Location: Filter 4 lives inside the fridge, upper-right corner, behind a small drop-down cover. If your filter is down in the base grille and pops out with a push-button, you own Filter 3 (EDR3RXD1) instead — stop, they are not interchangeable. Our EDR3RXD1 vs EDR4RXD1 comparison shows the two side by side if you are still unsure.
2. Shape and fitting: the UKF8001/EDR4RXD1 cartridge is the long cartridge that locks in with a quarter-turn counter-clockwise to remove, quarter-turn clockwise to fit.
3. The cross-reference: EDR4RXD1 replaces UKF8001, UKF8001AXX and 4396395 — the last one is the Kenmore 46-9006 number, so Kenmore owners with that code are in this family too. The full Kenmore matching table is in our Kenmore 46-9083, 46-9006 and 46-9081 guide.

Brands covered are the ones this housing was built for: select Whirlpool, Maytag, Amana, KitchenAid and JennAir refrigerators.

Cross-reference at a glance:

What to reorder from now on

• Search and order “EDR4RXD1” (Filter 4). Listings that still say UKF8001 are usually old stock photos or cross-reference titles — the cartridge you want is the EDR4RXD1.
• Price check: the genuine Filter 4 is $39.99 here with free US shipping, with multi-packs up to $147.99 if you would rather stock a year or two ahead. When you shop discount refrigerator water filters, be suspicious of “UKF8001” listings far below that — the rebrand gave counterfeiters a confusing market to hide in, and an old-name listing at a too-good price is exactly where fakes live. Our guide to how to spot a fake EveryDrop filter shows the packaging checks that catch them.
• Write it on the fridge: “Filter 4 — EDR4RXD1 — change every 6 months” plus the date of the last change. That one note ends the part-number confusion permanently.

When the change is due

Swapping the cartridge itself is a five-minute, no-tools job — open the corner cover, quarter-turn the old one out, quarter-turn the new one in, flush 2–3 gallons, reset the filter light. The full walkthrough is our How to Replace the EveryDrop Filter 4 (EDR4RXD1 / UKF8001) guide — follow that one for the change itself. If the light stays red afterwards, our filter light reset guide covers the 3-second fix.

Ordering: Shop the genuine EveryDrop Filter 4 (EDR4RXD1) — $39.99, free US shipping on any amount, processed in 1–2 business days, delivered in 3–5 business days via USPS, with 30-day free returns on a prepaid label.

So: UKF8001 on the old cartridge, EDR4RXD1 on the new box, same filter in your hand. Update the note on the fridge door and order by the new name from here on.

Still not sure which filter your fridge takes? See The Complete EveryDrop Buying Guide: Filters 1, 2, 3, 4, 5 and A in One Table — find your old part number in the table and you are done in 2 minutes.

FAQ

Is EDR4RXD1 really the same filter as UKF8001?

Yes. UKF8001 is the old part number; EDR4RXD1 (EveryDrop Filter 4) is the current name for the same genuine cartridge line, with the same housing and quarter-turn fitting.

My filter is in the base grille with a push-button release. Is that Filter 4?

No. A base-grille push-button filter is Filter 3 (EDR3RXD1). Filter 4 sits inside the fridge in the upper-right corner behind a drop-down cover. The two are not interchangeable.

Does EDR4RXD1 also replace 4396395 or Kenmore 46-9006?

Yes — EDR4RXD1 replaces UKF8001, UKF8001AXX and 4396395, which is the Kenmore 46-9006 number.

How often do I change Filter 4?

Every 6 months, the same rhythm UKF8001 owners are used to. Write the change date on the fridge so the next order is never a guess.