If your fridge filter is the UKF8001, your replacement is now sold under a new name: EveryDrop Filter 4, model EDR4RXD1. Same fit, same housing, same quarter-turn change. This guide walks through the full job for a French-door fridge — removing the old cartridge, fitting the new one, flushing it, and resetting the filter light — in about five minutes, with no tools.

Before you start

Your new filter: genuine EveryDrop EDR4RXD1 (Filter 4). It replaces UKF8001, UKF8001AXX and 4396395 (Kenmore 46-9006) and fits select Whirlpool, Maytag, Amana, KitchenAid, JennAir and Kenmore French-door and side-by-side refrigerators.
Check first: Filter 4 lives inside the fridge, in the upper-right corner, behind a small drop-down cover, and comes out with a quarter-turn twist. If your filter is in the base grille at the bottom and pops out with a push-button, you need Filter 3 (EDR3RXD1) instead — the two are not interchangeable.
Time: about 5 minutes, plus a few minutes of flushing.
You may need: a large pitcher for the flush water and a towel for drips.
You do not need to turn off the water supply.

Step 1: Open the filter cover

Open the fridge door and look at the upper-right corner of the fresh-food compartment. Lift or swing down the small filter cover — on most models it drops down and the old cartridge lowers with it or is exposed behind it.

Step 2: Twist out the old filter

Grip the old cartridge, turn it a quarter-turn counter-clockwise, and pull it straight out of the housing. A small amount of water may drip as it releases — that is normal, the housing seals itself automatically.

Step 3: Prepare the new filter

Remove the new EDR4RXD1 from its sealed packaging and take the protective cover off the O-rings. Check the O-rings are smooth and properly seated — a dry or twisted O-ring is the most common cause of a slow leak after a change.

Step 4: Install the new filter

Line the new cartridge up with the housing, push it in, and turn it a quarter-turn clockwise until it stops and feels locked. Close the filter cover. The cartridge must be fully turned and locked — a half-seated Filter 4 is the usual reason for slow flow, sputtering, or a drip inside the compartment.

Step 5: Flush the system (do not skip this)

A new filter holds loose carbon particles and trapped air. Before drinking:

Run the water dispenser and discard about 2–3 gallons of water (roughly 3–4 minutes of dispensing, in 30-second bursts to protect the dispenser valve).
Cloudy water or sputtering at the start is trapped air leaving the line — it clears as you flush.
Throw away the first batch of ice as well.

Step 6: Reset the filter light

A new filter does not reset the indicator by itself:

On most Whirlpool-family models, press and hold the “Water Filter” or “Filter Reset” button for 3 seconds until the indicator turns green or resets.
On models without a dedicated button, the reset is a dispenser-control combination specific to the model — check the control section of your manual.

Troubleshooting

Water flow is slow right after the change: the cartridge is usually not fully locked. Open the cover, give it a firm quarter-turn until it stops, and flush another gallon to clear the air.
The light will not reset: hold the reset button a full 3 seconds. If it stays red, remove and re-seat the filter, then reset again.
A drip inside the fridge after changing: remove the cartridge, check the O-rings are clean and seated, and re-install with a full quarter-turn.

When to change it next

Replace the EDR4RXD1 every 6 months or about 200 gallons, whichever comes first. Write the month on a piece of tape on the cartridge when you install it, and set a phone reminder for 6 months later. One genuine filter costs $39.99 here with free US shipping — versus $59.99 at the official brand store, and even their subscription price is $48 — and a multi-pack means the next change is already in the cupboard when the light turns red.

Need the filter? Shop the genuine EveryDrop EDR4RXD1 (Filter 4) — $39.99, free US shipping, 30-day free returns.

Still holding an old UKF8001 box and not sure it is really the same filter? Read: EDR3RXD1 vs EDR4RXD1 — which EveryDrop filter does your fridge need?

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 exactly the same fit as UKF8001? Yes. UKF8001 and UKF8001AXX are the previous part numbers for the same Filter 4 cartridge now sold as EDR4RXD1. The housing and quarter-turn fitting are unchanged.

Do I need to turn off the water to change it? No. The housing seals automatically when the filter is removed.

How much water do I flush after installing? About 2–3 gallons, until the water runs clear and steady, and discard the first batch of ice.

How long does Filter 4 last? About 6 months or 200 gallons, whichever comes first. Slow flow and chlorine taste returning are signs it is overdue.

What if I ordered Filter 4 but my fridge takes Filter 3? Do not force it — the cartridges are not interchangeable. Our 30-day free returns policy covers an unopened wrong filter with a prepaid label; contact us and we will help you confirm the right model before you re-order.