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Water Filter for the Monogram ZFGP21HZBSS (MWF)
✓ 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:
✓
ZFGP21HZBSS specifics — where the filter actually lives
Finding the bay is the easy part — this chassis puts it in the fresh-food compartment, placement dependent on the dispenser package, a spot that survives trim changes across the refrigerator run. It is a twist-lock bay: a quarter turn one way to release, the other to seat, and the only tool you need is a towel for the drip.
Order-day practicalities: a first removal that fights a set o-ring, and a status light that needs a manual hold-to-reset before it acknowledges the new cartridge. Whatever the badge on the door says, the parts reality is the MWF cartridge family is what every fit listing for this chassis resolves to, OEM and certified alternative alike. The SS ending is a finish code — color and handle options, not mechanical ones. Every finish of this chassis takes the same cartridge.
Reading the ZFGP21HZBSS model code — what the digits tell you
Capacity check: the 21 cu ft in the code is the box size, and bigger boxes push more water through the same cartridge between swaps. The trim walk never reaches the plumbing: fit charts key on the MWF cartridge family rather than the door configuration, so trim differences never change the order.
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.
ZFGP21HZBSS filter questions
Clearing the filter status light on a GE ZFGP21HZBSS?
Hold the filter-reset control a few seconds after the swap; the status light clears only with a seated cartridge, and the ZFGP21HZBSS manual maps the control by panel type.
Running the ZFGP21HZBSS with an empty filter bay — does it need a cap?
You can, but unfiltered — the MWF bay needs no bypass plug; it just passes water through without filtering while the cartridge is out.
Are off-brand filters safe for a GE 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 MWF 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 ZFGP21HZBSS?
Every six months or at the rated gallon capacity, whichever comes first — the MWF 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 MWF | RECOMMENDEDMWF Replacement Water Filter · 1-Pack – ClearFit | MWF Replacement Water Filter · 3-Pack – ClearFit | MWF Replacement Water Filter · 6-Pack – ClearFit |
|---|---|---|---|---|
| Price | OEM list | $14.99 | $37.47 | $67.44 |
| 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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