Bosch Refrigerator B18IF905SP Water Filter with packaging on a white background.

Bosch Benchmark B18IF905SP Water Filter

1 Pack

$32.99 USD $40.00 USD

Bosch Benchmark B18IF905SP Water Filter

Name: Bosch B18IF905SP Refrigerator UltraClarity Pro Water Filter
Rating: 5.00 (2 reviews)

Your 9 cu. ft. upright column freezer Refrigerator Model No. B18IF905SP uses the 11032531 water filter as a replacement.

$40.00 USD $32.99 USD

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The Bosch Benchmark B18IF905SP Water Filter keeps water and ice tasting clean by reducing chlorine taste/odor and filtering common impurities. Designed to fit the fits bosch Benchmark series B18IF905SP, this bosch refrigerator water filter goes in with a simple twist-and-lock motion. Look for the Bosch Ultra Clarity Pro water filter BORPLFTR55/11032531 when choosing your replacement cartridge.

Bosch Ultra Clarity Pro B18IF905SP Benchmark Water Filter is an easy way to keep fresh water on hand for everyday drinking and ice. Check the NSF/ANSI information for specific filtration standards, and plan to replace the cartridge every 6 months to keep it on schedule.

Bosch UltraClarity Pro water filter (11032531) is listed for the Bosch Benchmark B18IF905SP model. Check your current cartridge number before ordering.

Bosch Model B18IF905SP UltraClarity Pro water filter cartridge and its blue retail box, shown next to a refrigerator icon on a light blue gradient background with text overlays.

Key Features

Powerful Filtration – Reduces chlorine, odor, and bad taste for cleaner water.
Bosch Compatible Fit – Designed for Bosch Ultra Clarity Pro refrigerator models.
Easy Installation – Quick twist-and-lock replacement, no tools needed.
Clear Ice & Fresh Water – Improves dispenser water and ice quality.
6-Month Filter Life – Long-lasting UltraClarity Pro water filter cartridge.
OEM Quality Design – Secure fit for Bosch B18IF905SP 500 Series and more.

Specifications

Part Number: 11032531
OEM Part Number: BORPLFTR55, BORPLFTR50, 12033030, RA450022, REPLFLTR55
Brand: Bosch (UltraClarity Pro Series)
Type: Refrigerator Water Filter Cartridge
Dimensions: Approx. 9.5 x 2.0 x 2.0 inches
Weight: Approx. 0.75 – 1 lb
Color: White

Our Replacement Water Filters Are NSF Certified To Reduce 99% Contaminants

Hg

Chlorine

Cl

Mercury

Pb

Lead

Pesticides

Herbicides

Pharmaceuticals

See which water and air filters are compatible with your refrigerator.

Find Compatible Models

When to Replace Your Water Filter

Every 6 Months or 200 Gallons

Most refrigerator water filters are designed to last approximately 6 months or filter up to 200 gallons of water — whichever comes first.

When Your Fridge Displays a Filter Alert

Modern LG, Samsung, Whirlpool, and Frigidaire refrigerators have built-in filter indicators that notify you when it's time for a replacement.

Changes in Taste, Odor, or Flow

A drop in water pressure, an unusual taste, or an off smell from your dispenser are clear signs your filter is overdue for a change.

Compatible Model Numbers

UltraClarity Pro water filter (11032531 / BORPLFTR55 / BORPLFTR50) is designed to fit select Bosch refrigerators, including but not limited to the following models:

B20CS30SNS, B22CS30SNS, B26FT70SNS, B36CL80ENS, B36CL80SNS, B36CL81ENG, B36CT80SNS, B36CT80SNB, B36CT81SNS, B36CD50SNS, B36CD50SNB, B36FD50SNS, B36BT935NS, B36IT905NP, B30BB935SS, B30IB905SP, B18IF905SP

Frequently Asked Questions

Q: Are UltraClarity Pro and UltraClarity the same filter?
No. UltraClarity Pro (11032531 / BORPLFTR55 / BORPLFTR50) is different from the older UltraClarity filter. Always check your refrigerator model before buying.

Q2: Is 11032531 the same as BORPLFTR55?
Yes. 11032531, BORPLFTR55, and BORPLFTR50 are interchangeable part numbers for the UltraClarity Pro water filter.

Q3: How do I know if my Bosch fridge uses UltraClarity Pro?
Check the existing filter inside your fridge or confirm your refrigerator model number in the user manual.

Q4: How long does the UltraClarity Pro filter last?
It typically lasts up to 6 months or 300–400 gallons, depending on water quality.

Q5: Why is my Bosch water filter light still on after replacement?
You may need to manually reset the filter indicator by holding the reset button for a few seconds (check your manual).

Q6: Does the UltraClarity Pro filter remove lead?
It reduces chlorine taste and odor and other common impurities. Check NSF certification details for specific contaminant reduction claims.