REPLFLTR20 Refrigerator Water Filter Replacement
The Bosch REPLFLTR20 — also sold as 11032518, 12028325, UltraClarity Pro — is a 0.5-micron carbon-block filter certified to NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 401. It reduces chlorine taste & odour, lead, cysts, pharmaceuticals for up to 6 months. Below are every fridge it fits, its cross-reference codes, and the cheapest verified compatible options.
Also known as (cross-reference)
Same filter, different part numbers — all interchangeable.
Fits these Bosch fridge models
Tap your model to confirm the exact match and see all options.
How to replace the REPLFLTR20
Takes about 5 minutes, no tools. The steps are the same for the OEM REPLFLTR20 and any certified equivalent.
1. Locate the filter
On most Bosch fridges the REPLFLTR20 sits inside the top-right of the fresh-food compartment, in the bottom base grille, or lower rear. Check your manual if unsure.
2. Release the old filter
Turn the old cartridge a quarter-turn counter-clockwise, or press the release button, and pull it straight out. A little water drip is normal.
3. Prep the new filter
Unwrap the new REPLFLTR20 (or a certified equivalent) and remove the protective caps from the O-rings.
4. Insert and lock
Push the new filter in and turn clockwise until it clicks or the arrow lines up. It should seat firmly without forcing.
5. Flush the line
Run 2–4 gallons (about 4 minutes) through the dispenser to clear harmless carbon fines and air, until the water runs clear.
6. Reset the indicator
Press and hold the filter-status button for ~3 seconds until the light turns from red back to blue/green.
Signs it's time to replace it
Swap the REPLFLTR20 when you notice any of these — don't wait past 6 months.
Slower dispenser
Taste or odour returns
Filter light is red
Related & commonly confused filters
Different fridges — make sure you pick the right one.
Out of stock? Verified alternatives
If the REPLFLTR20 is unavailable, these fit the exact same fridges.
Identical filter, other part numbers
Certified compatible brands
Always confirm the alternative lists your fridge model before buying.
What it removes
Frequently asked questions
What filters are compatible with the REPLFLTR20?
The REPLFLTR20 is also sold under the codes 11032518, 12028325, UltraClarity Pro. Certified compatible replacements from brands like Waterdrop, GlacialPure, AquaCrest fit the same fridges and typically cost less than the OEM part.
Which refrigerators does the REPLFLTR20 fit?
It fits Bosch models including B36CL80ENS, B36CD50SNS, B36FL80SNS, B36CT80SNS and others. Enter your model number to confirm the exact match.
How often should I replace the REPLFLTR20?
Replace every 6 months or about 200 gallons, whichever comes first, to keep contaminant reduction and flow rate at spec.
Is the REPLFLTR20 NSF certified?
Yes — it is certified to NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 401, reducing chlorine taste & odour, lead, cysts and more.