Fridge water filter · Bosch
Bosch UltraClarity Pro Water Filter
- Replace every 6 months
- Fits inside the fridge
- Fits 2 models
The Bosch UltraClarity Pro (11032518, accessory code KSZ50UCP) is the cartridge for Bosch's current 90.5 cm multi-door fridges with ice and water, such as the KFD96AXEAA. It sits behind a fold-down cover in the fridge ceiling at the top left, comes out with a quarter turn, and the fridge lights a filter indicator every six months. Bosch says it reduces chlorine, chloramines, lead, sediment, pharmaceuticals, mercury, asbestos, turbidity and cysts; it does not remove bacteria.
Reduces
- chlorine and chloramines
- lead, mercury, asbestos
- sediment and turbidity
- pharmaceuticals
- cysts
- Reduces
- Reduces and protects against deposits, Chloramines, Chlorine, Lead, Sediments, Pharmaceuticals, Mercury, Asbestos, Turbidity, Cysts (microorganisms, parasites)
- Interval
- Duration every 6 months
- Accessory code
- 11032518 • KSZ50UCP
- Interval (manual)
- Change the water filter: every 6 months; if 'filter' lights up; if the water output has visibly reduced; if ice cube production has visibly reduced
- Limits
- The water filter does not filter bacteria or microbes out of the water
- Change
- Reach into the recess below the filter cover, pull it forwards slightly and move it to the bottom left. Pull the water filter down to the left, turn it counterclockwise by 90° and remove it. Insert the new water filter all the way into the filter opening, turn it 90° clockwise and fold it up to the right.
- After fitting
- Discard the ice cubes produced during the first 24 hours, and dispense water for five minutes and then dispose of this
- Bypass
- If you do not want to use a water filter or an external water filter system is installed, you can permanently replace the water filter with a bypass cap (11032252)
Every number this part goes by
- Retail name:
- BORPLFTR50
- Retail name:
- KSZ50UCP
- Retail name:
- UltraClarity Pro
- Part number:
- 11032531
- Part number:
- 12033030
Where to buy
Every seller we track for this part, cheapest first. Genuine is the manufacturer's own part; compatible is a third-party filter made to fit. Prices are re-checked daily where the seller publishes them. Last checked 5 September 2026.
How long it lasts
Replace every 6 months — the appliance's filter light tells you when.
After fitting: Press the 'filter' button on the control panel after fitting the new cartridge; the 'filter' light goes out and the six-month counter restarts (manual 9001945893 §13.2).
Flow slows and taste drops off as the filter fills up. Changing on time is the whole point of the filter.
Not due yet?
This filter is due every 6 months. We'll email you when it's time — free, no spam.
Fitting it
A few minutes, no tools. Watch it done, then follow the steps.
- 1Open the fridge doors and find the filter cover in the ceiling at the top left.
- 2Reach into the recess under the cover, pull it forward a little and swing it down to the left.
- 3Pull the old filter down to the left, turn it a quarter turn anti-clockwise and draw it out. It is under pressure, so expect a few drips; have a cloth ready.
- 4Push the new UltraClarity Pro all the way into the opening, turn it a quarter turn clockwise and fold it up to the right, then slide the cover back.
- 5Press the filter button on the control panel so the filter light goes out.
- 6Run the water dispenser for five minutes and throw away the first day's ice.
Will it fit your appliance?
Type your model number and we'll check it against our fitment database.
Fits these models
Bosch2 models
Common questions
- Which water filter fits the Bosch 11032518?
- The Bosch 11032518 takes the Bosch UltraClarity Pro Water Filter (part 11032518). Compatible filters made to the same specification also fit.
- How often should I replace the water filter in my Bosch 11032518?
- Every 6 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the 11032518 in Australia?
- We link to 2 Australian sellers for the 11032518; the seller's page shows the current price.
- How do I fit the 11032518 in a Bosch 11032518?
- No tools, a few minutes: 6 steps, listed on this page with the replacement video where the maker has one.
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