Name: Bosch 640565 / 3M Cuno CS-52 Compatible Refrigerator Water Filter
Brand: Instapure
SKU: REF-IPBQ-1
Price: 41.95 USD
Availability: InStock

Also replaces 640565 / Cuno CS-52

Coconut shells and coconut shell carbon on a white background with text about nature's best filtration media.

Bosch 640565 / 3M Cuno CS-52 Compatible Refrigerator Water Filter

Assembled in USAU.S. Based Customer Service
30-day money-back100% satisfaction guarantee

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Filter performance at a glance

.5 Micron Carbon block Filter media
300 gallons Filter life
6 months Typical life
100 Compatible refrigerators & filters

How We Compare

Instapure versus Bosch / 3M — head to head

The Competition

Bosch / 3M

640565 / Cuno CS-52

$49.95 Retail price

Higher cost per filter
NOT Assembled in USA

Better value

Instapure

Assembled in USA

$41.95

Multi-pack savings - buy more, save more!
Exact fit for Bosch refrigerators
Trusted brand since 1975

Document Library

Installation Instructions

Frequently Asked Questions

Will this Instapure filter fit my refrigerator model?
To confirm, search your refrigerator model.
Compatible with
How easy is it to install the Instapure refrigerator filter?

Installation is quick and easy — most customers can replace it in under 60 seconds with no tools required. Step-by-step instructions are included with the filter.
How long does one Instapure refrigerator filter last?

Each filter lasts up to 6 months. Replace it when the water flow slows or at the 6-month mark for best taste and performance.
Are Instapure filters certified?

Check the product listing for applicable certifications.
Why should I choose Instapure instead of the original manufacturer (OEM) filter?

Instapure delivers the same (or superior) certified filtration performance at a significantly lower price. All filters are proudly Made in the USA with high-grade coconut carbon in an ISO-certified factory, come with quantity discounts + free shipping, and are backed by over 50 years of water-filtration expertise — while still giving you great-tasting water and ice.

SINCE 1975

Trusted by American Families for 50 Years

Instapure has been a trusted name in home water filtration since 1975. Long before water filter certifications became mainstream, we were already committed to delivering clean, safe drinking water to American households. Five decades of expertise go into every filter we make — and our commitment to American-made quality hasn't wavered.