Refrigerator Water Filter Bypass Plug: Do You Need One?
Not sure which filter your fridge takes in the first place? Start with the refrigerator water filter compatibility guide to confirm your model and filter code before ordering a bypass plug.
A refrigerator water filter bypass plug lets your fridge’s dispenser and ice maker keep working when there’s no filter cartridge installed. Not every fridge needs one, and the ones that do need a part matched to their specific brand and model — not a universal fit. This page walks through when you actually need a bypass plug, how to tell if your specific fridge requires one, and links to the verified part for each major brand.
What Is a Refrigerator Water Filter Bypass Plug?
A bypass plug is a small plastic piece that takes the place of your water filter cartridge inside the filter housing. It doesn’t filter anything — it’s essentially an empty shell that completes the water line so the dispenser and ice maker keep working normally with no cartridge installed. Some fridges ship with one already; others require you to buy one separately once you decide to stop using the internal filter.
Do You Actually Need One?
There are two real reasons people install a bypass plug, and neither is about saving a few dollars on filters for its own sake:
- You already have a whole-house or under-sink filtration system. If your home’s water is filtered before it ever reaches the fridge, an internal cartridge is redundant — you’re paying to filter already-filtered water.
- Your specific fridge won’t dispense water or make ice with an empty filter housing. Some models are designed to stop water flow entirely if no cartridge or plug is present — not because the filter is doing anything critical, but because the internal valve needs something occupying that slot to complete the circuit.
- GE refrigerator water filter bypass plug — WR17X33825, WR01X29059, WR17X22070
- Whirlpool refrigerator water filter bypass plug — W10193691
- LG refrigerator water filter bypass plug — ABN73019101
- Samsung refrigerator water filter bypass plug — DA67-02270A (HAF-DIN)
- Frigidaire refrigerator water filter bypass plug — 242294402, A13402902, A15601102
- Open the filter compartment door inside the refrigerator.
- Press the release tab, or turn the existing filter or cap counterclockwise, to remove it. Keep a towel handy for minor drips.
- Push the bypass plug into the housing slot.
- Turn or lock it into position per your brand’s design, then snap the compartment cover shut.
- Run two to three gallons of water through the dispenser before drinking, to clear any trapped air from the line.
If neither applies to you — you’re just overdue for a filter change and don’t have a whole-house system — a bypass plug isn’t the fix. Replacing the filter is.
Does Your Fridge Auto-Bypass, or Does It Need a Physical Plug?
This is genuinely inconsistent across brands and even between models from the same brand — there’s no single universal answer, and any page that tells you otherwise is guessing. The real way to find out: remove your current filter, then press the water dispenser. If water flows normally, your model auto-bypasses and you don’t need a plug at all. If the dispenser stops working, stutters, or the ice maker stalls, your model requires a physical plug to complete the water line.
Test this with the fridge’s water line still connected as normal — don’t disconnect anything else first. If you get a blocked or reduced flow, move on to finding the exact plug for your brand below rather than leaving the housing empty long-term, since running it that way can cause minor drips or trapped air in the line.
Bypass Plugs Are Brand- and Model-Specific
There’s no universal bypass plug. A Whirlpool plug won’t fit a Samsung housing, and even within one brand, the exact part number varies by model family. Find your brand below for the verified part numbers, installation steps, and links to retailers that actually stock them:
How to Install a Bypass Plug (General Steps)
The exact mechanism varies by brand — see your brand’s page above for model-specific instructions and photos. In general, installing a bypass plug follows the same sequence across most fridges:
Frequently Asked Questions
Will using a bypass plug damage my fridge?
No. It’s a normal accessory designed by the manufacturer for exactly this purpose — running without a cartridge when you have your own filtration upstream, or when your model requires the housing to be occupied.
Can I just leave the filter housing empty instead of buying a plug?
Only if your model auto-bypasses (see the test above). If it doesn’t, an empty housing can block water flow, cause the dispenser to stop working, or lead to persistent air in the line.
Do all refrigerator brands use the same bypass plug?
No. Bypass plugs are brand- and often model-specific, the same way filters are. Use your brand’s page above to find the correct part.
Is a bypass plug worth it if I don’t have a whole-house filtration system?
Generally no. Without an external filtration system, a bypass plug just means your water and ice go completely unfiltered. If you don’t want to keep buying cartridges, a whole-house or under-sink system is the more useful upgrade — a bypass plug on its own is really only for people already covered by one.