Fridge water filter · Bosch
Bosch UltraClarity Water Filter
- Replace every 6 months
- Fits inside the fridge
- Fits 1 model
The Bosch UltraClarity 11034151 (accessory code KSZ50UC0) is the earlier UltraClarity cartridge for Bosch French-door and side-by-side fridges sold before the Pro, including the KFN91PJ10A. Bosch lists it as the replacement for 11028820, 11028821, 11028825, 00740574 and 00741509, the numbers under which the same filter was sold (third-party sellers still call it 644845 or 740560). Six-monthly change; reduces chlorine taste and odour.
Reduces
- chlorine taste and odour
- Reduces
- Improves water quality; reduces chlorine taste and odor
- Interval
- Duration every 6 months
- Replaces
- Replacement for 11028825, 11028821, 11028820, 00741509, 00740574
- Accessory code
- 11034151 • KSZ50UC0
Every number this part goes by
- Retail name:
- KSZ50UC0
- Retail name:
- UltraClarity
- Part number:
- 00740560
- Part number:
- 644845
- Part number:
- 740560
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: Fit the new cartridge, then hold the filter/reset control on the fridge display until the filter indicator clears (varies by model; check the manual for the fridge).
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.
- 1Find the filter housing for your model (in the fridge compartment on the French-door KFN91; check your manual for side-by-sides).
- 2Turn the old cartridge a quarter turn anti-clockwise and pull it out; a little water may drip.
- 3Push the new UltraClarity in and turn it clockwise until it stops.
- 4Hold the filter reset control on the display until the indicator clears.
- 5Run water for a few minutes and discard the first batch of ice.
Will it fit your appliance?
Type your model number and we'll check it against our fitment database.
Fits these models
Bosch1 model
Common questions
- Which water filter fits the Bosch 11034151?
- The Bosch 11034151 takes the Bosch UltraClarity Water Filter (part 11034151). Compatible filters made to the same specification also fit.
- How often should I replace the water filter in my Bosch 11034151?
- 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 11034151 in Australia?
- We track 2 Australian sellers for the 11034151; the lowest listed price when we last checked was A$58.64 at genuine_oem. Prices are re-checked daily and dated on this page.
- How do I fit the 11034151 in a Bosch 11034151?
- No tools, a few minutes: 5 steps, listed on this page with the replacement video where the maker has one.
Own a 11034151 and this looks wrong? . Reports go to a person, not a bot.