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640565 /CS-52 Bosch Comparable Refrigerator Water Filter Replacement By Tier1

640565 /CS-52 Bosch Comparable Refrigerator Water Filter Replacement By Tier1 - Refrigerator Filters - 15.14 - DiscountFilterStore.com

Warranty Info

Warranty Guarantee: Unconditional Product Guarantee for Life of the Product

TIER1-RWF1100

640565 /CS-52 Bosch Comparable Refrigerator Water Filter Replacement By Tier1

Name: 640565 /CS-52 Bosch Comparable Refrigerator Water Filter Replacement By Tier1
Brand: Tier1
SKU: TIER1-RWF1100
Price: 15.14 USD
Availability: OutOfStock
Rating: 5.0 (81 reviews)

Out of Stock

$15.14

Price Per Item
Single	$15.14
2 PACK	$14.69
3 PACK	$14.23
4 PACK	$13.78
6 PACK	$13.32

Fits Bosch refrigerators that use the Sanitary Quick Change system

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Single

2 PACK

3 PACK

4 PACK

6 PACK

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What's this?

Compatible replacement for Bosch CS-52 refrigerator water filters, designed for Bosch refrigerators using the Sanitary Quick Change system
Reduces chlorine taste and odor, rust and corrosion, sand, sediment, silt, and turbidity for cleaner water and ice
Reliable refrigerator water filter performance rated for up to 300 gallons or 6 months of everyday household use
CSA certified to NSF/ANSI Standards 42 and 372, ensuring trusted filtration performance and lead-safe materials

Features & Specs

Package Qty: 1

Manufacturer: Tier1

Manufacturer's Id: RWF1100

UPC: 635510407683

Actual Size (in): 8-7/8 inches (length) x 2-1/2 inches (height) 2-1/2 inches (width)

Primary Filter Media: Activated Carbon Block

Operating Pressure (psi): 30 - 125

Operating Temperature (°F): 38 - 100

Operating Temperature (°C): 3.3 - 37.8

Warranty Guarantee: Unconditional Product Guarantee for Life of the Product

Brand: Tier1

Depth (in): 2.41 in

Height (in): 2.5 in

Length (in): 9.25 in

Width (in): 2.41 in

UPC's For Search: 635510407683 | 00016145068805 | 161450688023 | 161450688054 | 016145068805 | 799932640612 | 799932640797 | 641945746631 | 641945752670

Micron Rating Nominal: 0⋅5

Flow Rate (gpm): 0.5

Instructions

Note: Filter must be pushed firmly into receiver and turned until filter is locked in place. If filter is not locked correctly, water will not flow.
DO NOT use any tools to install this filter
Shut off water supply
Twist the old filter a quarter-turn counterclockwise and remove
Insert new filter into the refrigerator receiver, push the new filter until it stops
Twist the filter a quarter-turn clockwise
Reset water filter status display
Flush filter with 3-4 gallons of with water until water runs clear. Some noise is not uncommon as air is purged from the system.
If filter sits for several days without use, flush a quart of water through the filter to remove stale water from refrigerator water lines

Reset Instructions

Press the water filter reset button and hold for 3 seconds

Certifications

NSF/ANSI Standard 42

NSF/ANSI Standard 372

Certifying Authority: CSA

Contaminants Reduced

Chlorine Taste & Odor

Rust and Corrosion

Sand

Sediment

Silt

Turbidity

Filter Life

Filter Life (gallons): 300

Filter Life (months): 6 months

Warranty Info

Warranty Guarantee: Unconditional Product Guarantee for Life of the Product

Prop65 warning applies to products that contain carbon media. Click here for more details

WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov

Product Details

The CS-52 Bosch refrigerator water filter replacement by Tier1 is designed to deliver clean, better-tasting water and ice directly from your refrigerator. Built for compatibility with several Bosch refrigerator models that use the Sanitary Quick Change system, this premium replacement provides dependable filtration with a precise fit and easy installation.

This refrigerator water filter helps reduce chlorine taste and odor while also filtering out rust and corrosion particles, sand, sediment, silt, and turbidity. By addressing these common water impurities, it supports fresher drinking water and clearer ice for everyday hydration, cooking, and beverages.

Certified by CSA to NSF/ANSI Standards 42 and 372, the CS-52 replacement meets recognized filtration performance and material safety standards. With a lifespan of up to 300 gallons or 6 months, it delivers consistent filtration without frequent replacements. Installation is quick and tool-free, allowing most users to complete a filter change in minutes using the Sanitary Quick Change design.

Tier1 refrigerator filters are a dependable alternative to OEM options, offering reliable compatibility, certified performance, and excellent value. If you are searching for the best refrigerator water filter replacement that combines easy installation with trusted filtration, this model is a smart choice.

Buy now and upgrade your refrigerator filtration today with Tier1.

Designed and Tested For Maximum Performance

Tested and Certified by CSA Group against NSF/ANSI 42 for Chlorine Reduction & NSF/ANSI 372 for Lead Free Compliance.

Coconut Carbon Media

Microporous coconut carbon is an excellent filtering media. This technology is responsible for the reduction of Chlorine Taste and Odor, Rust and Corrosion, Sand, Sediment, Silt, and Turbidity.

Great-Tasting Water

You will notice a cleaner more freshing glass of water after installing this filter. You should experience a reduction in chlorine taste and color in your water. Stay hydrated knowing that unwanted contaminants have been filtered out before they reach your glass

Contaminants glass

0.5 Micron Rating

This filter is manufactured to reduce contaminants down to 0.5 microns, ensuring microscopic larger than 0.5 microns are significantly reduced from your water. This high quality filtration will keep your water cleaner and more refreshing.

Frequently Asked Questions

Which Bosch refrigerator models is the Tier1 CS52 (640565) compatible with?

The Tier1 CS52 refrigerator water filter is a direct replacement for the Bosch 640565 (also known as CS-52, CS52B, and Bosch 9000-077104). It fits a wide range of Bosch side-by-side refrigerators, including models in the B20CS, B22CS, B24IF, B26FT, B26ID, and KAD62 series. This internal cartridge-style filter installs inside the refrigerator compartment and is engineered to match the OEM Bosch filter’s exact dimensions and flow specifications for a secure, leak-free fit.

What contaminants does the Tier1 CS52 filter reduce, and what is its micron rating?

The Tier1 CS52 uses a high-grade coconut shell carbon block media with a 0.5-micron nominal rating. It is designed to significantly reduce chlorine taste and odor, sediment, rust particles, cysts, turbidity, and other common waterborne impurities found in municipal tap water. The fine 0.5-micron filtration also helps capture fine particulates that standard 5-micron filters allow to pass, delivering cleaner, better-tasting water and clearer ice cubes from your Bosch refrigerator’s dispenser.

Is the Tier1 CS52 filter NSF/ANSI certified?

Yes. The Tier1 CS52 is tested and certified against NSF/ANSI Standard 42 for the reduction of chlorine taste and odor and aesthetic chlorine effects. It is manufactured in facilities that follow strict quality control guidelines, and the materials used are FDA-compliant for food-grade contact. While it is not certified for lead or VOC reduction under NSF/ANSI 53, it provides reliable aesthetic filtration equivalent to the OEM Bosch CS-52 cartridge at a significantly lower cost.

How often should the Tier1 CS52 Bosch replacement filter be changed?

The Tier1 CS52 has a rated filtration life of 6 months or 500 gallons, whichever comes first. If your household has heavy water usage, a large family, or higher sediment and chlorine levels in the incoming water supply, you may notice reduced flow or a change in taste sooner and should replace the filter accordingly. Consistent 6-month replacements keep your Bosch refrigerator’s dispenser and ice maker performing at peak efficiency and prevent bacterial buildup inside the cartridge.

How do I install and prime the Tier1 CS52 filter in my Bosch refrigerator?

Installation is tool-free: locate the existing CS-52 cartridge inside your Bosch refrigerator (typically in the upper-right interior), twist the old filter counter-clockwise about a quarter turn, and pull it straight out. Insert the new Tier1 CS52 into the housing and rotate clockwise until it locks into place. After installation, flush approximately 2–3 gallons of water through the dispenser to purge air and loose carbon fines—this eliminates any initial gray tint or sputtering. Finally, reset the filter indicator light per your Bosch model’s instructions, and the CS52 is ready to deliver filtered water and ice.

Comparable Part Number

TIER1-RWF1100 is comparable with the following part number(s)

1257074
2168701
55866-05
55866-06
5586605
5586606
56932
640565
70020002518
AP3961137
CS-450
CS-451
CS-452
CS-51
CS-52
CS450
CS451
CS452
CS51
CS52
CW-BQ1
EFF-6026A
EVOLFLTR10
RFC1800A
RWF1100
RWF2700A
SGF-BO52
W1085590
WD-640565
WHCFR-PLUS
WHFK-R-PLUS
WSB-1
WSQ-1
B20CS5
B20CS8
FF21230
PH21230
00640565
176346
Aqua-Pure C-CS-S
C-CS-S
C-CS-FF
EAP8729485
OCS CS52
OCS 55866-06
PD00005729
RWF-1100
SGF-BO50
Ultra-Ease
UltraEase
WF-297
WF297
WHCF-R-PLUS
WHCFRPLUS
WHKF-IMPLUS
WHKF-R-PLUS
WHKFRPLUS
WSB1
WSQ1
EFF6026A
EFF6026
EFF-6026
BO50
TIER1-RWF1100
TIER1_RWF1100_2_PACK
TIER1_RWF1100_3_PACK
TIER1_RWF1100_4_PACK
TIER1_RWF1100_6_PACK
TIER1-RWF1100-3-PK

Compatible With

TIER1-RWF1100 fits the following model number(s)

B36CT81SNS
B36CT81SNS\/01
B36CT81SNS\/02
B36CT81SNS\/03
B36CL81ENG
B36CL81ENG\/01
B36CL81ENG\/02
B36CL81ENG\/03
B36CL81ENG\/04
B36CL81ENG\/05
B36CL80ENS
B36CL80ENS\/01
B36CL80ENS\/02
B36CL80ENS\/03
B36CL80ENS\/04
B36CL80ENS\/05
B36CL80ENS\/06
B36CL80ENS\/07
B36CL80SNS
B36CL80SNS\/01
B36CL80SNS\/02
B36CL80SNS\/03
B36CL80SNS\/04
B36CL80SNS\/05
B36CL80SNS\/06
B36CL80SNS\/07
B36CL80SNS\/08
B36CT80SNB
B36CT80SNB\/01
B36CT80SNB\/02
B36CT80SNB\/03
B36CT80SNB\/04
B36CT80SNB\/05
B36CT80SNB\/06
B36CT80SNB\/07
B36CT80SNB\/08
B36CT80SNB\/09
B36CT80SNB\/10
B36CT80SNS
B36CT80SNS\/01
B36CT80SNS\/02
B36CT80SNS\/03
B36CT80SNS\/04
B36CT80SNS\/06
B36CT80SNS\/07
B36CT80SNS\/08
B36CT80SNS\/09
B36CT80SNS\/10
B36CD50SNB
B36CD50SNB\/01
B36CD50SNB\/02
B36CD50SNB\/03
B36CD50SNB\/04
B36CD50SNS
B36CD50SNS\/01
B36CD50SNS\/02
B36CD50SNS\/03
B36BT935NS
B36BT935NS\/01
B36BT935NS\/02
B36BT935NS\/03
B36BT935NS\/04
B36BT935NS\/05
B36IT905NP
B36IT905NP\/01
B36IT905NP\/02
B36IT905NP\/03
B36IT905NP\/04
B20CS30SNS
B20CS30SNS\/01
B20CS30SNS\/02
B20CS30SNS\/03
B20CS30SNS\/04
B30IB905SP
B30IB905SP\/01
B30IB905SP\/02
B30IB905SP\/03
B30IB905SP\/04
B18IF905SP
B18IF905SP\/01
B18IF905SP\/02
B18IF905SP\/03
B18IF905SP\/04
B30BB935SS
B30BB935SS\/01
B30BB935SS\/02
B30BB935SS\/03
B30BB935SS\/04
B30BB935SS\/05
B18IF800SP
B18IF800SP\/01
B18IF800SP\/02
B18IF800SP\/03
B18IF800SP\/08
B18IF900SP
B21CL80SNS
B21CL81SNS
B21CT80SNB
B21CT80SNS
B22CS30SNS
B22CS30SNS\/01
B22CS30SNS\/02
B22CS50SNB
B22CS50SNB\/01
B22CS50SNB\/02
B22CS50SNB\/03
B22CS50SNB\/04
B22CS50SNB\/05
B22CS50SNS
B22CS50SNS\/01
B22CS50SNS\/02
B22CS50SNS\/03
B22CS50SNS\/04
B22CS50SNW
B22CS50SNW\/01
B22CS50SNW\/02
B22CS50SNW\/03
B22CS50SNW\/04
B22CS50SNW\/05
B22CS80SNS
B22CS80SNS\/01
B22CS80SNS\/02
B22CS80SNS\/03
B22CS80SNS\/04
B26FT50SNS
B26FT70SNS
B26FT70SNS\/01
B26FT70SNS\/02
B26FT70SNS\/03
B26FT70SNS\/04
B26FT70SNS\/05
B26FT70SNS\/06
B26FT70SNS\/07
B26FT70SNS\/08
B26FT80SNS
B26FT80SNS(00)
B26FT80SNS\/01
B26FT80SNS\/02
B26FT80SNS\/03
B26FT80SNS\/04
B26FT80SNS\/05
B26FT80SNS\/06
B30BB830SS
B30BB830SS\/02
B30BB830SS\/05
B30BB830SS\/13
B30BB830SS\/15
B30BB830SS\/18
B30BB830SS\/19
B30BB830SS\/20
B30BB830SS\/22
B30BB830SS\/23
B30BB830SS\/26
B30BB830SS\/50
B30BB830SS\/52
B30BB830SS\/54
B30BB830SS\/55
B30BB830SS\/56
B30BB830SS\/57
B30BB830SS\/61
B30BB830SS\/62
B30BB830SS\/63
B30BB830SS\/64
B30IB800SP
B30IB800SP\/01
B30IB800SP\/02
B30IB800SP\/50
B30IB800SP\/51
B30IB800SP\/57
B30IB800SP\/58
B30IB800SP\/59
B30IB800SP\/62
B30IB800SP\/63
B30IB800SP\/64
B30IB800SP\/66
B30IB800SP\/67
B30IB800SP\/68
B30IB900SP
B30IR900SP
B36BT830NS
B36BT830NS\/01
B36BT830NS\/04
B36BT830NS\/05
B36BT830NS\/06
B36BT830NS\/07
B36BT830NS\/11
B36BT830NS\/15
B36BT830NS\/20
B36BT830NS\/21
B36BT830NS\/25
B36BT830NS\/29
B36BT830NS\/50
B36BT830NS\/56
B36BT830NS\/57
B36BT830NS\/59
B36BT830NS\/62
B36BT830NS\/63
B36BT830NS\/65
B36BT830NS\/66
B36BT830NS\/68
B36IT8
B36IT800NP
B36IT800NP\/01
B36IT800NP\/02
B36IT800NP\/03
B36IT800NP\/04
B36IT800NP\/05
B36IT800NP\/06
B36IT800NP\/07
B36IT800NP\/08
B36IT800NP\/10
B36IT800NP\/13
B36IT800NP\/14
B36IT800NP\/16
B36IT800NP\/17
B36IT900NP
BFL18IF800
BFL30IR800
B22CS30SNS-01
B26FT70SNS

	640565 /CS-52 Bosch Comparable Refrigerator Water Filter Replacement By Tier1From $15.14
Product Price	$15.14
Product SKU	TIER1-RWF1100
Filter Life (gallons)	300
Filter Life (months)	6 months
Primary Filter Media	Activated Carbon Block
Warranty Guarantee	Unconditional Product Guarantee for Life of the Product
Certifications	NSF/ANSI Standard 42,NSF/ANSI Standard 372

640565 /CS-52 Bosch Comparable Refrigerator Water Filter Replacement By Tier1

Designed and Tested For Maximum Performance

Coconut Carbon Media

Great-Tasting Water

0.5 Micron Rating

Frequently Asked Questions

TIER1-RWF1100 is comparable with the following part number(s)

TIER1-RWF1100 fits the following model number(s)

Customers Also Purchased