Bosch Ultra Clarity Pro BORPLFTR55 11032531 Refrigerator Water Filter

Your Bosch refrigerator is built to a higher standard and the water filter that goes inside it should match. The BORPLFTR55 UltraClarity Pro is the confirmed replacement water filter for compatible Bosch 500 series, 800 series, and select built-in refrigerator models, delivering NSF 42, 53, and 401 certified activated carbon block filtration to reduce chlorine, chloramines, lead, mercury, cysts, sediment, and select emerging trace compounds. Check the part number on your existing filter before ordering to confirm the BORPLFTR55 is the correct replacement for your specific model.

Why Choose the Bosch BORPLFTR55 UltraClarity Pro Water Filter

The BORPLFTR55 is tested and certified to NSF 42, 53, and 401 standards, making it the most comprehensively certified water filter in the Bosch refrigerator lineup. Here is what the BORPLFTR55 UltraClarity Pro specifically addresses:

• Chlorine and chloramines affecting water taste and odor
• Lead and mercury
• Cysts and sediment
• Rust and turbidity affecting water and ice clarity
• Select emerging trace compounds covered by NSF 401 certification
• Asbestos fibers
• Particulates affecting water clarity

Bosch BORPLFTR55 UltraClarity Pro Filter Specifications

• Product Name: Bosch BORPLFTR55 UltraClarity Pro Refrigerator Water Filter
• Part Number: BORPLFTR55
• Also Known As: 11032531, REPLFLTR55 (Thermador), RA450022 (Gaggenau), 12033030, BORPLFTR50
• Certification: NSF 42, 53, and 401
• Filter Capacity: 250 gallons
• Filter Life: Up to 6 months
• Flow Rate: 0.55 GPM
• Operating Temperature: 35 to 100 degrees Fahrenheit
• Working Pressure: 30 to 125 PSI
• Filter Media: Activated carbon block
• Installation Type: Twist-in, tool-free
• Brand : Bosch

Easy Installation for the Bosch BORPLFTR55 UltraClarity Pro Water Filter

The BORPLFTR55 uses a twist-in design that takes under a minute to complete with no tools required. Here is how the swap works:

1. Locate the filter housing inside the Bosch refrigerator compartment, typically in the upper right area of the fresh food section
2. Twist the old filter counterclockwise until it releases from the housing
3. Pull the old BORPLFTR55 filter straight out
4. Align the new filter with the housing inlet and insert it firmly
5. Twist clockwise until it locks securely into position
6. Run 2 to 3 gallons of water through the dispenser before drinking for the best filtration result
7. Reset the filter indicator light per the Bosch refrigerator user guide

When to Replace the Bosch BORPLFTR55 UltraClarity Pro Filter

Replace the BORPLFTR55 UltraClarity Pro water filter when any of the following occur:

• Every 6 months or 250 gallons, whichever comes first
• Dispensed water develops a flat taste or noticeable chemical odor
• Water or ice takes on a chlorine taste
• Water flow from the dispenser drops noticeably below normal
• Ice cubes appear cloudy or discolored
• The filter indicator light activates on the Bosch refrigerator control panel

Key Benefits

• NSF 42, 53, and 401 certified — the most comprehensively certified water filter in the Bosch refrigerator lineup, covering chlorine, chloramines, lead, mercury, cysts, sediment, and select emerging trace compounds through the full 250 gallon service life
• Reduces both chlorine and chloramines — chloramine reduction is a meaningful advantage for households in municipalities that use chloramine rather than chlorine as a disinfectant
• Activated carbon block filtration for consistent contaminant reduction from the first use through the full service life
• Twist-in tool-free installation completed in under a minute with no plumbing knowledge required
• Compatible with Thermador and Gaggenau refrigerators requiring the REPLFLTR55 or RA450022 filter codes — the same physical cartridge under different brand codes
• 250 gallon or 6 month service life for a straightforward twice-yearly replacement schedule
• Eco-friendly alternative to bottled water delivering NSF 401 certified clean water directly from the refrigerator dispenser and reducing plastic waste

FAQs

Is the Bosch BORPLFTR55 the same as 11032531 or REPLFLTR55?

Yes. 11032531, REPLFLTR55, RA450022, 12033030, and BORPLFTR50 are all alternative part numbers that refer to the same UltraClarity Pro filter cartridge. REPLFLTR55 is the Thermador branded version and RA450022 is the Gaggenau branded version of the same physical filter. If your refrigerator currently shows any of those codes, the BORPLFTR55 is the correct replacement to order.

Is the BORPLFTR55 compatible with Thermador and Gaggenau refrigerators?

Yes. The BORPLFTR55 is the same physical cartridge listed as REPLFLTR55 for compatible Thermador refrigerator models and RA450022 for compatible Gaggenau refrigerator models. All three codes confirm the same UltraClarity Pro filter format.

Can I use the BORPLFTR55 in a Bosch refrigerator that currently uses the REPLFLTR10?

No. The BORPLFTR55 UltraClarity Pro and REPLFLTR10 UltraClarity Standard use completely different physical housing designs and are not interchangeable in any way. If your existing filter shows REPLFLTR10, 644845, or 9000077104, the REPLFLTR10 is the correct replacement for your unit not the BORPLFTR55.

What does NSF 401 certification mean for the BORPLFTR55 water filter?

NSF 401 is an independent certification that confirms the filter has been tested and verified to reduce select emerging trace compounds not covered by NSF 42 and 53 alone. Whether these compounds are present in your water supply depends on your local water conditions. Checking a current water quality report from your municipal provider confirms whether NSF 401 coverage is relevant for your household.

Why is my water flow slow after installing a new BORPLFTR55 filter?

Slow flow immediately after installation is usually caused by air trapped in the filter or housing during the swap. Running 2 to 3 gallons through the dispenser clears trapped air and carbon fines and typically restores normal flow. If flow remains restricted after flushing, check that the filter is fully locked and that household water pressure falls within the 30 to 125 PSI operating range.

Can I use an aftermarket filter instead of the Bosch BORPLFTR55?

Aftermarket filters may physically fit the UltraClarity Pro housing but NSF 401 certification and contaminant reduction performance vary widely between manufacturers. The BORPLFTR55 carries NSF 401 certification in addition to NSF 42 and 53, a combination that many aftermarket filters do not match. For consistent tested performance use a certified replacement rated for the BORPLFTR55 housing.