Bosch Refrigerator Water Filter Guide (UltraClarity BORPLFTR10 & More)
Bosch refrigerators use the UltraClarity filter family, and the line changed over the years (older UltraClarity to UltraClarity Pro). Matching the right one is just reading the part number — then it is a quick twist-in swap.
Which UltraClarity Filter Do I Need?
Most current Bosch French-door and counter-depth models use the BORPLFTR10 (UltraClarity Pro, part 11032531) — a twist-in filter usually in the top interior. Newer models may call for the BORPLFTR50 (part 12033030). Older Bosch fridges use the original UltraClarity (644845 / REPLFLTR10 / 9000077104). They look similar but are NOT interchangeable, so match the exact part number on your old filter or in the manual.
OEM vs Compatible Filters
Genuine Bosch UltraClarity filters run about $40-60 — they are on the pricier side. NSF 42/53-certified compatibles cost roughly $20-30. Bosch filters have a slightly more precise fit than most brands, so a cheap uncertified compatible is more likely to leak or seat poorly here. If you go aftermarket, choose an NSF-certified one specifically listed for your BORPLFTR model.
Replace Every 6 Months and Reset
Change the filter every six months or when flow drops. Bosch UltraClarity filters twist in: insert and turn until it locks (some models have you push then twist). Flush 2-4 gallons afterward to clear carbon fines (early cloudiness is normal). Reset the filter indicator from the control panel — usually press and hold the 'Filter' button about 3 seconds until the status changes back to good.
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FAQ
Most current Bosch fridges use the BORPLFTR10 (UltraClarity Pro); some newer ones use BORPLFTR50, and older models use the original UltraClarity (644845 / REPLFLTR10). Match the part number on your current filter.
No. The original UltraClarity, UltraClarity Pro (BORPLFTR10), and the newer BORPLFTR50 are different. Use the exact one your model calls for or it may not seat or seal correctly.
It can save money, but Bosch fitment is precise, so only use an NSF 42/53-certified compatible listed for your exact model. On Bosch in particular, OEM is the safer bet if you've had leaks.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.